Saving all output to "!!{outputDirectory}!!/udf_space.q.raw". Enter "record" with no arguments to stop it.
>>>  !run !!{qFileDirectory}!!/udf_space.q
>>>  DESCRIBE FUNCTION space;
'tab_name'
'space(n) - returns n spaces'
1 row selected 
>>>  DESCRIBE FUNCTION EXTENDED space;
'tab_name'
'space(n) - returns n spaces'
'Example:'
'   > SELECT space(2) FROM src LIMIT 1;'
'  '  ''
4 rows selected 
>>>  
>>>  EXPLAIN SELECT 
space(10), 
space(0), 
space(1), 
space(-1), 
space(-100) 
FROM src LIMIT 1;
'Explain'
'ABSTRACT SYNTAX TREE:'
'  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME src))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION space 10)) (TOK_SELEXPR (TOK_FUNCTION space 0)) (TOK_SELEXPR (TOK_FUNCTION space 1)) (TOK_SELEXPR (TOK_FUNCTION space (- 1))) (TOK_SELEXPR (TOK_FUNCTION space (- 100)))) (TOK_LIMIT 1)))'
''
'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:'
'        src '
'          TableScan'
'            alias: src'
'            Select Operator'
'              expressions:'
'                    expr: space(10)'
'                    type: string'
'                    expr: space(0)'
'                    type: string'
'                    expr: space(1)'
'                    type: string'
'                    expr: space((- 1))'
'                    type: string'
'                    expr: space((- 100))'
'                    type: string'
'              outputColumnNames: _col0, _col1, _col2, _col3, _col4'
'              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: 1'
''
''
40 rows selected 
>>>  
>>>  SELECT 
length(space(10)), 
length(space(0)), 
length(space(1)), 
length(space(-1)), 
length(space(-100)) 
FROM src LIMIT 1;
'_c0','_c1','_c2','_c3','_c4'
'10','0','1','0','0'
1 row selected 
>>>  
>>>  SELECT 
space(10), 
space(0), 
space(1), 
space(-1), 
space(-100) 
FROM src LIMIT 1;
'_c0','_c1','_c2','_c3','_c4'
'          ','',' ','',''
1 row selected 
>>>  
>>>  !record