query: EXPLAIN
SELECT CASE 1
        WHEN 1 THEN 2
        WHEN 3 THEN 4
        ELSE 5
       END,
       CASE 2
        WHEN 1 THEN 2
        ELSE 5
       END,
       CASE 14
        WHEN 12 THEN 13
        WHEN 14 THEN 15
       END,
       CASE 16
        WHEN 12 THEN 13
        WHEN 14 THEN 15
       END,
       CASE 17
        WHEN 18 THEN NULL
        WHEN 17 THEN 20
       END,
       CASE 21
        WHEN 22 THEN 23
        WHEN 21 THEN 24
       END
FROM src LIMIT 1
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_TABREF src)) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION CASE 1 1 2 3 4 5)) (TOK_SELEXPR (TOK_FUNCTION CASE 2 1 2 5)) (TOK_SELEXPR (TOK_FUNCTION CASE 14 12 13 14 15)) (TOK_SELEXPR (TOK_FUNCTION CASE 16 12 13 14 15)) (TOK_SELEXPR (TOK_FUNCTION CASE 17 18 TOK_NULL 17 20)) (TOK_SELEXPR (TOK_FUNCTION CASE 21 22 23 21 24))) (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: CASE (1) WHEN (1) THEN (2) WHEN (3) THEN (4) ELSE (5) END
                    type: int
                    expr: CASE (2) WHEN (1) THEN (2) ELSE (5) END
                    type: int
                    expr: CASE (14) WHEN (12) THEN (13) WHEN (14) THEN (15) END
                    type: int
                    expr: CASE (16) WHEN (12) THEN (13) WHEN (14) THEN (15) END
                    type: int
                    expr: CASE (17) WHEN (18) THEN (null) WHEN (17) THEN (20) END
                    type: int
                    expr: CASE (21) WHEN (22) THEN (23) WHEN (21) THEN (24) END
                    type: int
              outputColumnNames: _col0, _col1, _col2, _col3, _col4, _col5
              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


query: SELECT CASE 1
        WHEN 1 THEN 2
        WHEN 3 THEN 4
        ELSE 5
       END,
       CASE 2
        WHEN 1 THEN 2
        ELSE 5
       END,
       CASE 14
        WHEN 12 THEN 13
        WHEN 14 THEN 15
       END,
       CASE 16
        WHEN 12 THEN 13
        WHEN 14 THEN 15
       END,
       CASE 17
        WHEN 18 THEN NULL
        WHEN 17 THEN 20
       END,
       CASE 21
        WHEN 22 THEN 23
        WHEN 21 THEN 24
       END
FROM src LIMIT 1
Input: default/src
Output: file:/data/users/athusoo/commits/hive_trunk_ws1/build/ql/tmp/1655100692/10000
2	5	15	NULL	20	24