Saving all output to "!!{outputDirectory}!!/metadataonly1.q.raw". Enter "record" with no arguments to stop it.
>>>  !run !!{qFileDirectory}!!/metadataonly1.q
>>>  CREATE TABLE TEST1(A INT, B DOUBLE) partitioned by (ds string);
No rows affected 
>>>  explain extended select max(ds) from TEST1;
'Explain'
'ABSTRACT SYNTAX TREE:'
'  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME TEST1))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION max (TOK_TABLE_OR_COL ds))))))'
''
'STAGE DEPENDENCIES:'
'  Stage-1 is a root stage'
'  Stage-0 is a root stage'
''
'STAGE PLANS:'
'  Stage: Stage-1'
'    Map Reduce'
'      Alias -> Map Operator Tree:'
'        test1 '
'          TableScan'
'            alias: test1'
'            GatherStats: false'
'            Select Operator'
'              expressions:'
'                    expr: ds'
'                    type: string'
'              outputColumnNames: ds'
'              Group By Operator'
'                aggregations:'
'                      expr: max(ds)'
'                bucketGroup: true'
'                mode: hash'
'                outputColumnNames: _col0'
'                Reduce Output Operator'
'                  sort order: '
'                  tag: -1'
'                  value expressions:'
'                        expr: _col0'
'                        type: string'
'      Needs Tagging: false'
'      Reduce Operator Tree:'
'        Group By Operator'
'          aggregations:'
'                expr: max(VALUE._col0)'
'          bucketGroup: false'
'          mode: mergepartial'
'          outputColumnNames: _col0'
'          Select Operator'
'            expressions:'
'                  expr: _col0'
'                  type: string'
'            outputColumnNames: _col0'
'            File Output Operator'
'              compressed: false'
'              GlobalTableId: 0'
'              directory: file:!!{hive.exec.scratchdir}!!'
'              NumFilesPerFileSink: 1'
'              Stats Publishing Key Prefix: file:!!{hive.exec.scratchdir}!!'
'              table:'
'                  input format: org.apache.hadoop.mapred.TextInputFormat'
'                  output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                  properties:'
'                    columns _col0'
'                    columns.types string'
'                    escape.delim \'
'                    serialization.format 1'
'              TotalFiles: 1'
'              GatherStats: false'
'              MultiFileSpray: false'
''
'  Stage: Stage-0'
'    Fetch Operator'
'      limit: -1'
''
''
68 rows selected 
>>>  select max(ds) from TEST1;
'_c0'
''
1 row selected 
>>>  
>>>  alter table TEST1 add partition (ds='1');
No rows affected 
>>>  explain extended select max(ds) from TEST1;
'Explain'
'ABSTRACT SYNTAX TREE:'
'  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME TEST1))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION max (TOK_TABLE_OR_COL ds))))))'
''
'STAGE DEPENDENCIES:'
'  Stage-1 is a root stage'
'  Stage-0 is a root stage'
''
'STAGE PLANS:'
'  Stage: Stage-1'
'    Map Reduce'
'      Alias -> Map Operator Tree:'
'        test1 '
'          TableScan'
'            alias: test1'
'            GatherStats: false'
'            Select Operator'
'              expressions:'
'                    expr: ds'
'                    type: string'
'              outputColumnNames: ds'
'              Group By Operator'
'                aggregations:'
'                      expr: max(ds)'
'                bucketGroup: false'
'                mode: hash'
'                outputColumnNames: _col0'
'                Reduce Output Operator'
'                  sort order: '
'                  tag: -1'
'                  value expressions:'
'                        expr: _col0'
'                        type: string'
'      Needs Tagging: false'
'      Path -> Alias:'
'        fake-path-metadata-only-query-metadataonly1.test1{ds=1} [test1]'
'      Path -> Partition:'
'        fake-path-metadata-only-query-metadataonly1.test1{ds=1} '
'          Partition'
'            base file name: ds=1'
'            input format: org.apache.hadoop.hive.ql.io.OneNullRowInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 1'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=1'
'              name metadataonly1.test1'
'              partition_columns ds'
'              serialization.ddl struct test1 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.NullStructSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1'
'                name metadataonly1.test1'
'                partition_columns ds'
'                serialization.ddl struct test1 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test1'
'            name: metadataonly1.test1'
'      Reduce Operator Tree:'
'        Group By Operator'
'          aggregations:'
'                expr: max(VALUE._col0)'
'          bucketGroup: false'
'          mode: mergepartial'
'          outputColumnNames: _col0'
'          Select Operator'
'            expressions:'
'                  expr: _col0'
'                  type: string'
'            outputColumnNames: _col0'
'            File Output Operator'
'              compressed: false'
'              GlobalTableId: 0'
'              directory: file:!!{hive.exec.scratchdir}!!'
'              NumFilesPerFileSink: 1'
'              Stats Publishing Key Prefix: file:!!{hive.exec.scratchdir}!!'
'              table:'
'                  input format: org.apache.hadoop.mapred.TextInputFormat'
'                  output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                  properties:'
'                    columns _col0'
'                    columns.types string'
'                    escape.delim \'
'                    serialization.format 1'
'              TotalFiles: 1'
'              GatherStats: false'
'              MultiFileSpray: false'
''
'  Stage: Stage-0'
'    Fetch Operator'
'      limit: -1'
''
''
111 rows selected 
>>>  select max(ds) from TEST1;
'_c0'
'1'
1 row selected 
>>>  
>>>  explain extended select count(distinct ds) from TEST1;
'Explain'
'ABSTRACT SYNTAX TREE:'
'  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME TEST1))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTIONDI count (TOK_TABLE_OR_COL ds))))))'
''
'STAGE DEPENDENCIES:'
'  Stage-1 is a root stage'
'  Stage-0 is a root stage'
''
'STAGE PLANS:'
'  Stage: Stage-1'
'    Map Reduce'
'      Alias -> Map Operator Tree:'
'        test1 '
'          TableScan'
'            alias: test1'
'            GatherStats: false'
'            Select Operator'
'              expressions:'
'                    expr: ds'
'                    type: string'
'              outputColumnNames: ds'
'              Group By Operator'
'                aggregations:'
'                      expr: count(DISTINCT ds)'
'                bucketGroup: false'
'                keys:'
'                      expr: ds'
'                      type: string'
'                mode: hash'
'                outputColumnNames: _col0, _col1'
'                Reduce Output Operator'
'                  key expressions:'
'                        expr: _col0'
'                        type: string'
'                  sort order: +'
'                  tag: -1'
'                  value expressions:'
'                        expr: _col1'
'                        type: bigint'
'      Needs Tagging: false'
'      Path -> Alias:'
'        fake-path-metadata-only-query-metadataonly1.test1{ds=1} [test1]'
'      Path -> Partition:'
'        fake-path-metadata-only-query-metadataonly1.test1{ds=1} '
'          Partition'
'            base file name: ds=1'
'            input format: org.apache.hadoop.hive.ql.io.OneNullRowInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 1'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=1'
'              name metadataonly1.test1'
'              partition_columns ds'
'              serialization.ddl struct test1 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.NullStructSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1'
'                name metadataonly1.test1'
'                partition_columns ds'
'                serialization.ddl struct test1 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test1'
'            name: metadataonly1.test1'
'      Reduce Operator Tree:'
'        Group By Operator'
'          aggregations:'
'                expr: count(DISTINCT KEY._col0:0._col0)'
'          bucketGroup: false'
'          mode: mergepartial'
'          outputColumnNames: _col0'
'          Select Operator'
'            expressions:'
'                  expr: _col0'
'                  type: bigint'
'            outputColumnNames: _col0'
'            File Output Operator'
'              compressed: false'
'              GlobalTableId: 0'
'              directory: file:!!{hive.exec.scratchdir}!!'
'              NumFilesPerFileSink: 1'
'              Stats Publishing Key Prefix: file:!!{hive.exec.scratchdir}!!'
'              table:'
'                  input format: org.apache.hadoop.mapred.TextInputFormat'
'                  output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                  properties:'
'                    columns _col0'
'                    columns.types bigint'
'                    escape.delim \'
'                    serialization.format 1'
'              TotalFiles: 1'
'              GatherStats: false'
'              MultiFileSpray: false'
''
'  Stage: Stage-0'
'    Fetch Operator'
'      limit: -1'
''
''
117 rows selected 
>>>  select count(distinct ds) from TEST1;
'_c0'
'1'
1 row selected 
>>>  
>>>  explain extended select count(ds) from TEST1;
'Explain'
'ABSTRACT SYNTAX TREE:'
'  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME TEST1))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION count (TOK_TABLE_OR_COL ds))))))'
''
'STAGE DEPENDENCIES:'
'  Stage-1 is a root stage'
'  Stage-0 is a root stage'
''
'STAGE PLANS:'
'  Stage: Stage-1'
'    Map Reduce'
'      Alias -> Map Operator Tree:'
'        test1 '
'          TableScan'
'            alias: test1'
'            GatherStats: false'
'            Select Operator'
'              expressions:'
'                    expr: ds'
'                    type: string'
'              outputColumnNames: ds'
'              Group By Operator'
'                aggregations:'
'                      expr: count(ds)'
'                bucketGroup: false'
'                mode: hash'
'                outputColumnNames: _col0'
'                Reduce Output Operator'
'                  sort order: '
'                  tag: -1'
'                  value expressions:'
'                        expr: _col0'
'                        type: bigint'
'      Needs Tagging: false'
'      Path -> Alias:'
'        !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=1 [test1]'
'      Path -> Partition:'
'        !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=1 '
'          Partition'
'            base file name: ds=1'
'            input format: org.apache.hadoop.mapred.TextInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 1'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=1'
'              name metadataonly1.test1'
'              partition_columns ds'
'              serialization.ddl struct test1 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1'
'                name metadataonly1.test1'
'                partition_columns ds'
'                serialization.ddl struct test1 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test1'
'            name: metadataonly1.test1'
'      Reduce Operator Tree:'
'        Group By Operator'
'          aggregations:'
'                expr: count(VALUE._col0)'
'          bucketGroup: false'
'          mode: mergepartial'
'          outputColumnNames: _col0'
'          Select Operator'
'            expressions:'
'                  expr: _col0'
'                  type: bigint'
'            outputColumnNames: _col0'
'            File Output Operator'
'              compressed: false'
'              GlobalTableId: 0'
'              directory: file:!!{hive.exec.scratchdir}!!'
'              NumFilesPerFileSink: 1'
'              Stats Publishing Key Prefix: file:!!{hive.exec.scratchdir}!!'
'              table:'
'                  input format: org.apache.hadoop.mapred.TextInputFormat'
'                  output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                  properties:'
'                    columns _col0'
'                    columns.types bigint'
'                    escape.delim \'
'                    serialization.format 1'
'              TotalFiles: 1'
'              GatherStats: false'
'              MultiFileSpray: false'
''
'  Stage: Stage-0'
'    Fetch Operator'
'      limit: -1'
''
''
111 rows selected 
>>>  select count(ds) from TEST1;
'_c0'
'0'
1 row selected 
>>>  
>>>  alter table TEST1 add partition (ds='2');
No rows affected 
>>>  explain extended 
select count(*) from TEST1 a2 join (select max(ds) m from TEST1) b on a2.ds=b.m;
'Explain'
'ABSTRACT SYNTAX TREE:'
'  (TOK_QUERY (TOK_FROM (TOK_JOIN (TOK_TABREF (TOK_TABNAME TEST1) a2) (TOK_SUBQUERY (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME TEST1))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION max (TOK_TABLE_OR_COL ds)) m)))) b) (= (. (TOK_TABLE_OR_COL a2) ds) (. (TOK_TABLE_OR_COL b) m)))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTIONSTAR count)))))'
''
'STAGE DEPENDENCIES:'
'  Stage-1 is a root stage'
'  Stage-2 depends on stages: Stage-1'
'  Stage-3 depends on stages: Stage-2'
'  Stage-0 is a root stage'
''
'STAGE PLANS:'
'  Stage: Stage-1'
'    Map Reduce'
'      Alias -> Map Operator Tree:'
'        b:test1 '
'          TableScan'
'            alias: test1'
'            GatherStats: false'
'            Select Operator'
'              expressions:'
'                    expr: ds'
'                    type: string'
'              outputColumnNames: ds'
'              Group By Operator'
'                aggregations:'
'                      expr: max(ds)'
'                bucketGroup: false'
'                mode: hash'
'                outputColumnNames: _col0'
'                Reduce Output Operator'
'                  sort order: '
'                  tag: -1'
'                  value expressions:'
'                        expr: _col0'
'                        type: string'
'      Needs Tagging: false'
'      Path -> Alias:'
'        fake-path-metadata-only-query-metadataonly1.test1{ds=1} [b:test1]'
'        fake-path-metadata-only-query-metadataonly1.test1{ds=2} [b:test1]'
'      Path -> Partition:'
'        fake-path-metadata-only-query-metadataonly1.test1{ds=1} '
'          Partition'
'            base file name: ds=1'
'            input format: org.apache.hadoop.hive.ql.io.OneNullRowInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 1'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=1'
'              name metadataonly1.test1'
'              partition_columns ds'
'              serialization.ddl struct test1 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.NullStructSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1'
'                name metadataonly1.test1'
'                partition_columns ds'
'                serialization.ddl struct test1 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test1'
'            name: metadataonly1.test1'
'        fake-path-metadata-only-query-metadataonly1.test1{ds=2} '
'          Partition'
'            base file name: ds=2'
'            input format: org.apache.hadoop.hive.ql.io.OneNullRowInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 2'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=2'
'              name metadataonly1.test1'
'              partition_columns ds'
'              serialization.ddl struct test1 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.NullStructSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1'
'                name metadataonly1.test1'
'                partition_columns ds'
'                serialization.ddl struct test1 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test1'
'            name: metadataonly1.test1'
'      Reduce Operator Tree:'
'        Group By Operator'
'          aggregations:'
'                expr: max(VALUE._col0)'
'          bucketGroup: false'
'          mode: mergepartial'
'          outputColumnNames: _col0'
'          Select Operator'
'            expressions:'
'                  expr: _col0'
'                  type: string'
'            outputColumnNames: _col0'
'            File Output Operator'
'              compressed: false'
'              GlobalTableId: 0'
'              directory: file:!!{hive.exec.scratchdir}!!'
'              NumFilesPerFileSink: 1'
'              table:'
'                  input format: org.apache.hadoop.mapred.SequenceFileInputFormat'
'                  output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat'
'                  properties:'
'                    columns _col0'
'                    columns.types string'
'                    escape.delim \'
'              TotalFiles: 1'
'              GatherStats: false'
'              MultiFileSpray: false'
''
'  Stage: Stage-2'
'    Map Reduce'
'      Alias -> Map Operator Tree:'
'        $INTNAME '
'            Reduce Output Operator'
'              key expressions:'
'                    expr: _col0'
'                    type: string'
'              sort order: +'
'              Map-reduce partition columns:'
'                    expr: _col0'
'                    type: string'
'              tag: 1'
'        a2 '
'          TableScan'
'            alias: a2'
'            GatherStats: false'
'            Reduce Output Operator'
'              key expressions:'
'                    expr: ds'
'                    type: string'
'              sort order: +'
'              Map-reduce partition columns:'
'                    expr: ds'
'                    type: string'
'              tag: 0'
'      Needs Tagging: true'
'      Path -> Alias:'
'        file:!!{hive.exec.scratchdir}!! [$INTNAME]'
'        !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=1 [a2]'
'        !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=2 [a2]'
'      Path -> Partition:'
'        file:!!{hive.exec.scratchdir}!! '
'          Partition'
'            base file name: -mr-10002'
'            input format: org.apache.hadoop.mapred.SequenceFileInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat'
'            properties:'
'              columns _col0'
'              columns.types string'
'              escape.delim \'
'          '
'              input format: org.apache.hadoop.mapred.SequenceFileInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat'
'              properties:'
'                columns _col0'
'                columns.types string'
'                escape.delim \'
'        !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=1 '
'          Partition'
'            base file name: ds=1'
'            input format: org.apache.hadoop.mapred.TextInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 1'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=1'
'              name metadataonly1.test1'
'              partition_columns ds'
'              serialization.ddl struct test1 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1'
'                name metadataonly1.test1'
'                partition_columns ds'
'                serialization.ddl struct test1 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test1'
'            name: metadataonly1.test1'
'        !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=2 '
'          Partition'
'            base file name: ds=2'
'            input format: org.apache.hadoop.mapred.TextInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 2'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=2'
'              name metadataonly1.test1'
'              partition_columns ds'
'              serialization.ddl struct test1 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1'
'                name metadataonly1.test1'
'                partition_columns ds'
'                serialization.ddl struct test1 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test1'
'            name: metadataonly1.test1'
'      Reduce Operator Tree:'
'        Join Operator'
'          condition map:'
'               Inner Join 0 to 1'
'          condition expressions:'
'            0 '
'            1 '
'          handleSkewJoin: false'
'          Select Operator'
'            Group By Operator'
'              aggregations:'
'                    expr: count()'
'              bucketGroup: false'
'              mode: hash'
'              outputColumnNames: _col0'
'              File Output Operator'
'                compressed: false'
'                GlobalTableId: 0'
'                directory: file:!!{hive.exec.scratchdir}!!'
'                NumFilesPerFileSink: 1'
'                table:'
'                    input format: org.apache.hadoop.mapred.SequenceFileInputFormat'
'                    output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat'
'                    properties:'
'                      columns _col0'
'                      columns.types bigint'
'                      escape.delim \'
'                TotalFiles: 1'
'                GatherStats: false'
'                MultiFileSpray: false'
''
'  Stage: Stage-3'
'    Map Reduce'
'      Alias -> Map Operator Tree:'
'        file:!!{hive.exec.scratchdir}!! '
'            Reduce Output Operator'
'              sort order: '
'              tag: -1'
'              value expressions:'
'                    expr: _col0'
'                    type: bigint'
'      Needs Tagging: false'
'      Path -> Alias:'
'        file:!!{hive.exec.scratchdir}!! [file:!!{hive.exec.scratchdir}!!]'
'      Path -> Partition:'
'        file:!!{hive.exec.scratchdir}!! '
'          Partition'
'            base file name: -mr-10003'
'            input format: org.apache.hadoop.mapred.SequenceFileInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat'
'            properties:'
'              columns _col0'
'              columns.types bigint'
'              escape.delim \'
'          '
'              input format: org.apache.hadoop.mapred.SequenceFileInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat'
'              properties:'
'                columns _col0'
'                columns.types bigint'
'                escape.delim \'
'      Reduce Operator Tree:'
'        Group By Operator'
'          aggregations:'
'                expr: count(VALUE._col0)'
'          bucketGroup: false'
'          mode: mergepartial'
'          outputColumnNames: _col0'
'          Select Operator'
'            expressions:'
'                  expr: _col0'
'                  type: bigint'
'            outputColumnNames: _col0'
'            File Output Operator'
'              compressed: false'
'              GlobalTableId: 0'
'              directory: file:!!{hive.exec.scratchdir}!!'
'              NumFilesPerFileSink: 1'
'              Stats Publishing Key Prefix: file:!!{hive.exec.scratchdir}!!'
'              table:'
'                  input format: org.apache.hadoop.mapred.TextInputFormat'
'                  output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                  properties:'
'                    columns _col0'
'                    columns.types bigint'
'                    escape.delim \'
'                    serialization.format 1'
'              TotalFiles: 1'
'              GatherStats: false'
'              MultiFileSpray: false'
''
'  Stage: Stage-0'
'    Fetch Operator'
'      limit: -1'
''
''
371 rows selected 
>>>  select count(*) from TEST1 a2 join (select max(ds) m from TEST1) b on a2.ds=b.m;
'_c0'
'0'
1 row selected 
>>>  
>>>  
>>>  CREATE TABLE TEST2(A INT, B DOUBLE) partitioned by (ds string, hr string);
No rows affected 
>>>  alter table TEST2 add partition (ds='1', hr='1');
No rows affected 
>>>  alter table TEST2 add partition (ds='1', hr='2');
No rows affected 
>>>  alter table TEST2 add partition (ds='1', hr='3');
No rows affected 
>>>  
>>>  explain extended select ds, count(distinct hr) from TEST2 group by ds;
'Explain'
'ABSTRACT SYNTAX TREE:'
'  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME TEST2))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_TABLE_OR_COL ds)) (TOK_SELEXPR (TOK_FUNCTIONDI count (TOK_TABLE_OR_COL hr)))) (TOK_GROUPBY (TOK_TABLE_OR_COL ds))))'
''
'STAGE DEPENDENCIES:'
'  Stage-1 is a root stage'
'  Stage-0 is a root stage'
''
'STAGE PLANS:'
'  Stage: Stage-1'
'    Map Reduce'
'      Alias -> Map Operator Tree:'
'        test2 '
'          TableScan'
'            alias: test2'
'            GatherStats: false'
'            Select Operator'
'              expressions:'
'                    expr: ds'
'                    type: string'
'                    expr: hr'
'                    type: string'
'              outputColumnNames: ds, hr'
'              Group By Operator'
'                aggregations:'
'                      expr: count(DISTINCT hr)'
'                bucketGroup: false'
'                keys:'
'                      expr: ds'
'                      type: string'
'                      expr: hr'
'                      type: string'
'                mode: hash'
'                outputColumnNames: _col0, _col1, _col2'
'                Reduce Output Operator'
'                  key expressions:'
'                        expr: _col0'
'                        type: string'
'                        expr: _col1'
'                        type: string'
'                  sort order: ++'
'                  Map-reduce partition columns:'
'                        expr: _col0'
'                        type: string'
'                  tag: -1'
'                  value expressions:'
'                        expr: _col2'
'                        type: bigint'
'      Needs Tagging: false'
'      Path -> Alias:'
'        fake-path-metadata-only-query-metadataonly1.test2{ds=1, hr=1} [test2]'
'        fake-path-metadata-only-query-metadataonly1.test2{ds=1, hr=2} [test2]'
'        fake-path-metadata-only-query-metadataonly1.test2{ds=1, hr=3} [test2]'
'      Path -> Partition:'
'        fake-path-metadata-only-query-metadataonly1.test2{ds=1, hr=1} '
'          Partition'
'            base file name: hr=1'
'            input format: org.apache.hadoop.hive.ql.io.OneNullRowInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 1'
'              hr 1'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2/ds=1/hr=1'
'              name metadataonly1.test2'
'              partition_columns ds/hr'
'              serialization.ddl struct test2 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.NullStructSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2'
'                name metadataonly1.test2'
'                partition_columns ds/hr'
'                serialization.ddl struct test2 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test2'
'            name: metadataonly1.test2'
'        fake-path-metadata-only-query-metadataonly1.test2{ds=1, hr=2} '
'          Partition'
'            base file name: hr=2'
'            input format: org.apache.hadoop.hive.ql.io.OneNullRowInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 1'
'              hr 2'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2/ds=1/hr=2'
'              name metadataonly1.test2'
'              partition_columns ds/hr'
'              serialization.ddl struct test2 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.NullStructSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2'
'                name metadataonly1.test2'
'                partition_columns ds/hr'
'                serialization.ddl struct test2 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test2'
'            name: metadataonly1.test2'
'        fake-path-metadata-only-query-metadataonly1.test2{ds=1, hr=3} '
'          Partition'
'            base file name: hr=3'
'            input format: org.apache.hadoop.hive.ql.io.OneNullRowInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 1'
'              hr 3'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2/ds=1/hr=3'
'              name metadataonly1.test2'
'              partition_columns ds/hr'
'              serialization.ddl struct test2 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.NullStructSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2'
'                name metadataonly1.test2'
'                partition_columns ds/hr'
'                serialization.ddl struct test2 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test2'
'            name: metadataonly1.test2'
'      Reduce Operator Tree:'
'        Group By Operator'
'          aggregations:'
'                expr: count(DISTINCT KEY._col1:0._col0)'
'          bucketGroup: false'
'          keys:'
'                expr: KEY._col0'
'                type: string'
'          mode: mergepartial'
'          outputColumnNames: _col0, _col1'
'          Select Operator'
'            expressions:'
'                  expr: _col0'
'                  type: string'
'                  expr: _col1'
'                  type: bigint'
'            outputColumnNames: _col0, _col1'
'            File Output Operator'
'              compressed: false'
'              GlobalTableId: 0'
'              directory: file:!!{hive.exec.scratchdir}!!'
'              NumFilesPerFileSink: 1'
'              Stats Publishing Key Prefix: file:!!{hive.exec.scratchdir}!!'
'              table:'
'                  input format: org.apache.hadoop.mapred.TextInputFormat'
'                  output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                  properties:'
'                    columns _col0,_col1'
'                    columns.types string:bigint'
'                    escape.delim \'
'                    serialization.format 1'
'              TotalFiles: 1'
'              GatherStats: false'
'              MultiFileSpray: false'
''
'  Stage: Stage-0'
'    Fetch Operator'
'      limit: -1'
''
''
216 rows selected 
>>>  select ds, count(distinct hr) from TEST2 group by ds;
'ds','_c1'
'1','3'
1 row selected 
>>>  
>>>  explain extended select ds, count(hr) from TEST2 group by ds;
'Explain'
'ABSTRACT SYNTAX TREE:'
'  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME TEST2))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_TABLE_OR_COL ds)) (TOK_SELEXPR (TOK_FUNCTION count (TOK_TABLE_OR_COL hr)))) (TOK_GROUPBY (TOK_TABLE_OR_COL ds))))'
''
'STAGE DEPENDENCIES:'
'  Stage-1 is a root stage'
'  Stage-0 is a root stage'
''
'STAGE PLANS:'
'  Stage: Stage-1'
'    Map Reduce'
'      Alias -> Map Operator Tree:'
'        test2 '
'          TableScan'
'            alias: test2'
'            GatherStats: false'
'            Select Operator'
'              expressions:'
'                    expr: ds'
'                    type: string'
'                    expr: hr'
'                    type: string'
'              outputColumnNames: ds, hr'
'              Group By Operator'
'                aggregations:'
'                      expr: count(hr)'
'                bucketGroup: false'
'                keys:'
'                      expr: ds'
'                      type: string'
'                mode: hash'
'                outputColumnNames: _col0, _col1'
'                Reduce Output Operator'
'                  key expressions:'
'                        expr: _col0'
'                        type: string'
'                  sort order: +'
'                  Map-reduce partition columns:'
'                        expr: _col0'
'                        type: string'
'                  tag: -1'
'                  value expressions:'
'                        expr: _col1'
'                        type: bigint'
'      Needs Tagging: false'
'      Path -> Alias:'
'        !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2/ds=1/hr=1 [test2]'
'        !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2/ds=1/hr=2 [test2]'
'        !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2/ds=1/hr=3 [test2]'
'      Path -> Partition:'
'        !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2/ds=1/hr=1 '
'          Partition'
'            base file name: hr=1'
'            input format: org.apache.hadoop.mapred.TextInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 1'
'              hr 1'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2/ds=1/hr=1'
'              name metadataonly1.test2'
'              partition_columns ds/hr'
'              serialization.ddl struct test2 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2'
'                name metadataonly1.test2'
'                partition_columns ds/hr'
'                serialization.ddl struct test2 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test2'
'            name: metadataonly1.test2'
'        !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2/ds=1/hr=2 '
'          Partition'
'            base file name: hr=2'
'            input format: org.apache.hadoop.mapred.TextInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 1'
'              hr 2'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2/ds=1/hr=2'
'              name metadataonly1.test2'
'              partition_columns ds/hr'
'              serialization.ddl struct test2 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2'
'                name metadataonly1.test2'
'                partition_columns ds/hr'
'                serialization.ddl struct test2 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test2'
'            name: metadataonly1.test2'
'        !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2/ds=1/hr=3 '
'          Partition'
'            base file name: hr=3'
'            input format: org.apache.hadoop.mapred.TextInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 1'
'              hr 3'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2/ds=1/hr=3'
'              name metadataonly1.test2'
'              partition_columns ds/hr'
'              serialization.ddl struct test2 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test2'
'                name metadataonly1.test2'
'                partition_columns ds/hr'
'                serialization.ddl struct test2 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test2'
'            name: metadataonly1.test2'
'      Reduce Operator Tree:'
'        Group By Operator'
'          aggregations:'
'                expr: count(VALUE._col0)'
'          bucketGroup: false'
'          keys:'
'                expr: KEY._col0'
'                type: string'
'          mode: mergepartial'
'          outputColumnNames: _col0, _col1'
'          Select Operator'
'            expressions:'
'                  expr: _col0'
'                  type: string'
'                  expr: _col1'
'                  type: bigint'
'            outputColumnNames: _col0, _col1'
'            File Output Operator'
'              compressed: false'
'              GlobalTableId: 0'
'              directory: file:!!{hive.exec.scratchdir}!!'
'              NumFilesPerFileSink: 1'
'              Stats Publishing Key Prefix: file:!!{hive.exec.scratchdir}!!'
'              table:'
'                  input format: org.apache.hadoop.mapred.TextInputFormat'
'                  output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                  properties:'
'                    columns _col0,_col1'
'                    columns.types string:bigint'
'                    escape.delim \'
'                    serialization.format 1'
'              TotalFiles: 1'
'              GatherStats: false'
'              MultiFileSpray: false'
''
'  Stage: Stage-0'
'    Fetch Operator'
'      limit: -1'
''
''
212 rows selected 
>>>  select ds, count(hr) from TEST2 group by ds;
'ds','_c1'
No rows selected 
>>>  
>>>  set hive.input.format=org.apache.hadoop.hive.ql.io.CombineHiveInputFormat;
No rows affected 
>>>  
>>>  explain extended select max(ds) from TEST1;
'Explain'
'ABSTRACT SYNTAX TREE:'
'  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME TEST1))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION max (TOK_TABLE_OR_COL ds))))))'
''
'STAGE DEPENDENCIES:'
'  Stage-1 is a root stage'
'  Stage-0 is a root stage'
''
'STAGE PLANS:'
'  Stage: Stage-1'
'    Map Reduce'
'      Alias -> Map Operator Tree:'
'        test1 '
'          TableScan'
'            alias: test1'
'            GatherStats: false'
'            Select Operator'
'              expressions:'
'                    expr: ds'
'                    type: string'
'              outputColumnNames: ds'
'              Group By Operator'
'                aggregations:'
'                      expr: max(ds)'
'                bucketGroup: false'
'                mode: hash'
'                outputColumnNames: _col0'
'                Reduce Output Operator'
'                  sort order: '
'                  tag: -1'
'                  value expressions:'
'                        expr: _col0'
'                        type: string'
'      Needs Tagging: false'
'      Path -> Alias:'
'        fake-path-metadata-only-query-metadataonly1.test1{ds=1} [test1]'
'        fake-path-metadata-only-query-metadataonly1.test1{ds=2} [test1]'
'      Path -> Partition:'
'        fake-path-metadata-only-query-metadataonly1.test1{ds=1} '
'          Partition'
'            base file name: ds=1'
'            input format: org.apache.hadoop.hive.ql.io.OneNullRowInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 1'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=1'
'              name metadataonly1.test1'
'              partition_columns ds'
'              serialization.ddl struct test1 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.NullStructSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1'
'                name metadataonly1.test1'
'                partition_columns ds'
'                serialization.ddl struct test1 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test1'
'            name: metadataonly1.test1'
'        fake-path-metadata-only-query-metadataonly1.test1{ds=2} '
'          Partition'
'            base file name: ds=2'
'            input format: org.apache.hadoop.hive.ql.io.OneNullRowInputFormat'
'            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'            partition values:'
'              ds 2'
'            properties:'
'              bucket_count -1'
'              columns a,b'
'              columns.types int:double'
'              file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'              file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1/ds=2'
'              name metadataonly1.test1'
'              partition_columns ds'
'              serialization.ddl struct test1 { i32 a, double b}'
'              serialization.format 1'
'              serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              transient_lastDdlTime !!UNIXTIME!!'
'            serde: org.apache.hadoop.hive.serde2.NullStructSerDe'
'          '
'              input format: org.apache.hadoop.mapred.TextInputFormat'
'              output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'              properties:'
'                bucket_count -1'
'                columns a,b'
'                columns.types int:double'
'                file.inputformat org.apache.hadoop.mapred.TextInputFormat'
'                file.outputformat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                location !!{hive.metastore.warehouse.dir}!!/metadataonly1.db/test1'
'                name metadataonly1.test1'
'                partition_columns ds'
'                serialization.ddl struct test1 { i32 a, double b}'
'                serialization.format 1'
'                serialization.lib org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'                transient_lastDdlTime !!UNIXTIME!!'
'              serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe'
'              name: metadataonly1.test1'
'            name: metadataonly1.test1'
'      Reduce Operator Tree:'
'        Group By Operator'
'          aggregations:'
'                expr: max(VALUE._col0)'
'          bucketGroup: false'
'          mode: mergepartial'
'          outputColumnNames: _col0'
'          Select Operator'
'            expressions:'
'                  expr: _col0'
'                  type: string'
'            outputColumnNames: _col0'
'            File Output Operator'
'              compressed: false'
'              GlobalTableId: 0'
'              directory: file:!!{hive.exec.scratchdir}!!'
'              NumFilesPerFileSink: 1'
'              Stats Publishing Key Prefix: file:!!{hive.exec.scratchdir}!!'
'              table:'
'                  input format: org.apache.hadoop.mapred.TextInputFormat'
'                  output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
'                  properties:'
'                    columns _col0'
'                    columns.types string'
'                    escape.delim \'
'                    serialization.format 1'
'              TotalFiles: 1'
'              GatherStats: false'
'              MultiFileSpray: false'
''
'  Stage: Stage-0'
'    Fetch Operator'
'      limit: -1'
''
''
152 rows selected 
>>>  select max(ds) from TEST1;
'_c0'
'2'
1 row selected 
>>>  
>>>  select distinct ds from srcpart;
'ds'
'2008-04-08'
'2008-04-09'
2 rows selected 
>>>  select min(ds),max(ds) from srcpart;
'_c0','_c1'
'2008-04-08','2008-04-09'
1 row selected 
>>>  !record