Saving all output to "!!{outputDirectory}!!/mergejoins.q.raw". Enter "record" with no arguments to stop it.
>>>  !run !!{qFileDirectory}!!/mergejoins.q
>>>  create table a (val1 int, val2 int);
No rows affected 
>>>  create table b (val1 int, val2 int);
No rows affected 
>>>  create table c (val1 int, val2 int);
No rows affected 
>>>  create table d (val1 int, val2 int);
No rows affected 
>>>  create table e (val1 int, val2 int);
No rows affected 
>>>  
>>>  explain select * from a join b on a.val1=b.val1 join c on a.val1=c.val1 join d on a.val1=d.val1 join e on a.val2=e.val2;
'Explain'
'ABSTRACT SYNTAX TREE:'
'  (TOK_QUERY (TOK_FROM (TOK_JOIN (TOK_JOIN (TOK_JOIN (TOK_JOIN (TOK_TABREF (TOK_TABNAME a)) (TOK_TABREF (TOK_TABNAME b)) (= (. (TOK_TABLE_OR_COL a) val1) (. (TOK_TABLE_OR_COL b) val1))) (TOK_TABREF (TOK_TABNAME c)) (= (. (TOK_TABLE_OR_COL a) val1) (. (TOK_TABLE_OR_COL c) val1))) (TOK_TABREF (TOK_TABNAME d)) (= (. (TOK_TABLE_OR_COL a) val1) (. (TOK_TABLE_OR_COL d) val1))) (TOK_TABREF (TOK_TABNAME e)) (= (. (TOK_TABLE_OR_COL a) val2) (. (TOK_TABLE_OR_COL e) val2)))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR TOK_ALLCOLREF))))'
''
'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: val1'
'                    type: int'
'              sort order: +'
'              Map-reduce partition columns:'
'                    expr: val1'
'                    type: int'
'              tag: 0'
'              value expressions:'
'                    expr: val1'
'                    type: int'
'                    expr: val2'
'                    type: int'
'        b '
'          TableScan'
'            alias: b'
'            Reduce Output Operator'
'              key expressions:'
'                    expr: val1'
'                    type: int'
'              sort order: +'
'              Map-reduce partition columns:'
'                    expr: val1'
'                    type: int'
'              tag: 1'
'              value expressions:'
'                    expr: val1'
'                    type: int'
'                    expr: val2'
'                    type: int'
'        c '
'          TableScan'
'            alias: c'
'            Reduce Output Operator'
'              key expressions:'
'                    expr: val1'
'                    type: int'
'              sort order: +'
'              Map-reduce partition columns:'
'                    expr: val1'
'                    type: int'
'              tag: 2'
'              value expressions:'
'                    expr: val1'
'                    type: int'
'                    expr: val2'
'                    type: int'
'        d '
'          TableScan'
'            alias: d'
'            Reduce Output Operator'
'              key expressions:'
'                    expr: val1'
'                    type: int'
'              sort order: +'
'              Map-reduce partition columns:'
'                    expr: val1'
'                    type: int'
'              tag: 3'
'              value expressions:'
'                    expr: val1'
'                    type: int'
'                    expr: val2'
'                    type: int'
'      Reduce Operator Tree:'
'        Join Operator'
'          condition map:'
'               Inner Join 0 to 1'
'               Inner Join 0 to 2'
'               Inner Join 0 to 3'
'          condition expressions:'
'            0 {VALUE._col0} {VALUE._col1}'
'            1 {VALUE._col0} {VALUE._col1}'
'            2 {VALUE._col0} {VALUE._col1}'
'            3 {VALUE._col0} {VALUE._col1}'
'          handleSkewJoin: false'
'          outputColumnNames: _col0, _col1, _col4, _col5, _col8, _col9, _col12, _col13'
'          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:'
'        $INTNAME '
'            Reduce Output Operator'
'              key expressions:'
'                    expr: _col1'
'                    type: int'
'              sort order: +'
'              Map-reduce partition columns:'
'                    expr: _col1'
'                    type: int'
'              tag: 0'
'              value expressions:'
'                    expr: _col12'
'                    type: int'
'                    expr: _col13'
'                    type: int'
'                    expr: _col4'
'                    type: int'
'                    expr: _col5'
'                    type: int'
'                    expr: _col8'
'                    type: int'
'                    expr: _col9'
'                    type: int'
'                    expr: _col0'
'                    type: int'
'                    expr: _col1'
'                    type: int'
'        e '
'          TableScan'
'            alias: e'
'            Reduce Output Operator'
'              key expressions:'
'                    expr: val2'
'                    type: int'
'              sort order: +'
'              Map-reduce partition columns:'
'                    expr: val2'
'                    type: int'
'              tag: 1'
'              value expressions:'
'                    expr: val1'
'                    type: int'
'                    expr: val2'
'                    type: int'
'      Reduce Operator Tree:'
'        Join Operator'
'          condition map:'
'               Inner Join 0 to 1'
'          condition expressions:'
'            0 {VALUE._col0} {VALUE._col1} {VALUE._col4} {VALUE._col5} {VALUE._col8} {VALUE._col9} {VALUE._col12} {VALUE._col13}'
'            1 {VALUE._col0} {VALUE._col1}'
'          handleSkewJoin: false'
'          outputColumnNames: _col0, _col1, _col4, _col5, _col8, _col9, _col12, _col13, _col16, _col17'
'          Select Operator'
'            expressions:'
'                  expr: _col12'
'                  type: int'
'                  expr: _col13'
'                  type: int'
'                  expr: _col4'
'                  type: int'
'                  expr: _col5'
'                  type: int'
'                  expr: _col8'
'                  type: int'
'                  expr: _col9'
'                  type: int'
'                  expr: _col0'
'                  type: int'
'                  expr: _col1'
'                  type: int'
'                  expr: _col16'
'                  type: int'
'                  expr: _col17'
'                  type: int'
'            outputColumnNames: _col0, _col1, _col2, _col3, _col4, _col5, _col6, _col7, _col8, _col9'
'            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'
''
''
191 rows selected 
>>>  
>>>  --HIVE-3070 filter on outer join condition removed while merging join tree
>>>  explain select * from src a join src b on a.key=b.key left outer join src c on b.key=c.key and b.key<10;
'Explain'
'ABSTRACT SYNTAX TREE:'
'  (TOK_QUERY (TOK_FROM (TOK_LEFTOUTERJOIN (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_TABREF (TOK_TABNAME src) c) (and (= (. (TOK_TABLE_OR_COL b) key) (. (TOK_TABLE_OR_COL c) key)) (< (. (TOK_TABLE_OR_COL b) key) 10)))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR TOK_ALLCOLREF))))'
''
'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:'
'        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'
'                    expr: value'
'                    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'
'              value expressions:'
'                    expr: key'
'                    type: string'
'                    expr: value'
'                    type: string'
'        c '
'          TableScan'
'            alias: c'
'            Reduce Output Operator'
'              key expressions:'
'                    expr: key'
'                    type: string'
'              sort order: +'
'              Map-reduce partition columns:'
'                    expr: key'
'                    type: string'
'              tag: 2'
'              value expressions:'
'                    expr: key'
'                    type: string'
'                    expr: value'
'                    type: string'
'      Reduce Operator Tree:'
'        Join Operator'
'          condition map:'
'               Inner Join 0 to 1'
'               Left Outer Join1 to 2'
'          condition expressions:'
'            0 {VALUE._col0} {VALUE._col1}'
'            1 {VALUE._col0} {VALUE._col1}'
'            2 {VALUE._col0} {VALUE._col1}'
'          filter predicates:'
'            0 '
'            1 {(VALUE._col0 < 10.0)}'
'            2 '
'          handleSkewJoin: false'
'          outputColumnNames: _col0, _col1, _col4, _col5, _col8, _col9'
'          Select Operator'
'            expressions:'
'                  expr: _col0'
'                  type: string'
'                  expr: _col1'
'                  type: string'
'                  expr: _col4'
'                  type: string'
'                  expr: _col5'
'                  type: string'
'                  expr: _col8'
'                  type: string'
'                  expr: _col9'
'                  type: string'
'            outputColumnNames: _col0, _col1, _col2, _col3, _col4, _col5'
'            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'
''
''
104 rows selected 
>>>  !record