Saving all output to "!!{outputDirectory}!!/udf_case_column_pruning.q.raw". Enter "record" with no arguments to stop it.
>>>  !run !!{qFileDirectory}!!/udf_case_column_pruning.q
>>>  EXPLAIN 
SELECT CASE a.key 
WHEN '1' THEN 2 
WHEN '3' THEN 4 
ELSE 5 
END as key 
FROM src a JOIN src b 
ON a.key = b.key 
ORDER BY key LIMIT 10;
'Explain'
'ABSTRACT SYNTAX TREE:'
'  (TOK_QUERY (TOK_FROM (TOK_JOIN (TOK_TABREF (TOK_TABNAME src) a) (TOK_TABREF (TOK_TABNAME src) b) (= (. (TOK_TABLE_OR_COL a) key) (. (TOK_TABLE_OR_COL b) key)))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION CASE (. (TOK_TABLE_OR_COL a) key) '1' 2 '3' 4 5) key)) (TOK_ORDERBY (TOK_TABSORTCOLNAMEASC (TOK_TABLE_OR_COL key))) (TOK_LIMIT 10)))'
''
'STAGE DEPENDENCIES:'
'  Stage-1 is a root stage'
'  Stage-2 depends on stages: Stage-1'
'  Stage-0 is a root stage'
''
'STAGE PLANS:'
'  Stage: Stage-1'
'    Map Reduce'
'      Alias -> Map Operator Tree:'
'        a '
'          TableScan'
'            alias: a'
'            Reduce Output Operator'
'              key expressions:'
'                    expr: key'
'                    type: string'
'              sort order: +'
'              Map-reduce partition columns:'
'                    expr: key'
'                    type: string'
'              tag: 0'
'              value expressions:'
'                    expr: key'
'                    type: string'
'        b '
'          TableScan'
'            alias: b'
'            Reduce Output Operator'
'              key expressions:'
'                    expr: key'
'                    type: string'
'              sort order: +'
'              Map-reduce partition columns:'
'                    expr: key'
'                    type: string'
'              tag: 1'
'      Reduce Operator Tree:'
'        Join Operator'
'          condition map:'
'               Inner Join 0 to 1'
'          condition expressions:'
'            0 {VALUE._col0}'
'            1 '
'          handleSkewJoin: false'
'          outputColumnNames: _col0'
'          Select Operator'
'            expressions:'
'                  expr: CASE (_col0) WHEN ('1') THEN (2) WHEN ('3') THEN (4) ELSE (5) END'
'                  type: int'
'            outputColumnNames: _col0'
'            File Output Operator'
'              compressed: false'
'              GlobalTableId: 0'
'              table:'
'                  input format: org.apache.hadoop.mapred.SequenceFileInputFormat'
'                  output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat'
''
'  Stage: Stage-2'
'    Map Reduce'
'      Alias -> Map Operator Tree:'
'        file:!!{hive.exec.scratchdir}!! '
'            Reduce Output Operator'
'              key expressions:'
'                    expr: _col0'
'                    type: int'
'              sort order: +'
'              tag: -1'
'              value expressions:'
'                    expr: _col0'
'                    type: int'
'      Reduce Operator Tree:'
'        Extract'
'          Limit'
'            File Output Operator'
'              compressed: false'
'              GlobalTableId: 0'
'              table:'
'                  input format: org.apache.hadoop.mapred.TextInputFormat'
'                  output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
''
'  Stage: Stage-0'
'    Fetch Operator'
'      limit: 10'
''
''
88 rows selected 
>>>  
>>>  SELECT CASE a.key 
WHEN '1' THEN 2 
WHEN '3' THEN 4 
ELSE 5 
END as key 
FROM src a JOIN src b 
ON a.key = b.key 
ORDER BY key LIMIT 10;
'key'
'5'
'5'
'5'
'5'
'5'
'5'
'5'
'5'
'5'
'5'
10 rows selected 
>>>  !record