Saving all output to "!!{outputDirectory}!!/udf_in_file.q.raw". Enter "record" with no arguments to stop it.
>>>  !run !!{qFileDirectory}!!/udf_in_file.q
>>>  DESCRIBE FUNCTION in_file;
'tab_name'
'in_file(str, filename) - Returns true if str appears in the file'
1 row selected 
>>>  
>>>  EXPLAIN 
SELECT in_file("303", "../data/files/test2.dat"), 
in_file("304", "../data/files/test2.dat"), 
in_file(CAST(NULL AS STRING), "../data/files/test2.dat") 
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 in_file "303" "../data/files/test2.dat")) (TOK_SELEXPR (TOK_FUNCTION in_file "304" "../data/files/test2.dat")) (TOK_SELEXPR (TOK_FUNCTION in_file (TOK_FUNCTION TOK_STRING TOK_NULL) "../data/files/test2.dat"))) (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: in_file('303', '../data/files/test2.dat')'
'                    type: boolean'
'                    expr: in_file('304', '../data/files/test2.dat')'
'                    type: boolean'
'                    expr: in_file(UDFToString(null), '../data/files/test2.dat')'
'                    type: boolean'
'              outputColumnNames: _col0, _col1, _col2'
'              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'
''
''
36 rows selected 
>>>  
>>>  SELECT in_file("303", "../data/files/test2.dat"), 
in_file("304", "../data/files/test2.dat"), 
in_file(CAST(NULL AS STRING), "../data/files/test2.dat") 
FROM src LIMIT 1;
'_c0','_c1','_c2'
'true','false',''
1 row selected 
>>>  !record