| explain |
| ------------------------------- |
| SORT(3) |
| => Sort Keys: default.n1.n_nationkey (INT4) (asc, nulls last) |
| JOIN(6)(INNER) |
| => Join Cond: name1 (TEXT) = name2 (TEXT) |
| => target list: default.n1.n_nationkey (INT4), name1 (TEXT), name2 (TEXT) |
| => out schema: {(3) default.n1.n_nationkey (INT4), name1 (TEXT), name2 (TEXT)} |
| => in schema: {(3) default.n1.n_nationkey (INT4), name1 (TEXT), name2 (TEXT)} |
| SCAN(0) on default.nation as n1 |
| => target list: default.n1.n_nationkey (INT4), substr(default.n1.n_name (TEXT),1,4) as name1 |
| => out schema: {(2) default.n1.n_nationkey (INT4), name1 (TEXT)} |
| => in schema: {(4) default.n1.n_comment (TEXT), default.n1.n_name (TEXT), default.n1.n_nationkey (INT4), default.n1.n_regionkey (INT4)} |
| SCAN(1) on default.nation as n2 |
| => target list: substr(default.n2.n_name (TEXT),1,4) as name2 |
| => out schema: {(1) name2 (TEXT)} |
| => in schema: {(4) default.n2.n_comment (TEXT), default.n2.n_name (TEXT), default.n2.n_nationkey (INT4), default.n2.n_regionkey (INT4)} |
| explain |
| ------------------------------- |
| ------------------------------------------------------------------------------- |
| Execution Block Graph (TERMINAL - eb_0000000000000_0000_000005) |
| ------------------------------------------------------------------------------- |
| |-eb_0000000000000_0000_000005 |
| |-eb_0000000000000_0000_000004 |
| |-eb_0000000000000_0000_000003 |
| |-eb_0000000000000_0000_000002 |
| |-eb_0000000000000_0000_000001 |
| ------------------------------------------------------------------------------- |
| Order of Execution |
| ------------------------------------------------------------------------------- |
| 1: eb_0000000000000_0000_000001 |
| 2: eb_0000000000000_0000_000002 |
| 3: eb_0000000000000_0000_000003 |
| 4: eb_0000000000000_0000_000004 |
| 5: eb_0000000000000_0000_000005 |
| ------------------------------------------------------------------------------- |
| |
| ======================================================= |
| Block Id: eb_0000000000000_0000_000001 [LEAF] |
| ======================================================= |
| |
| [Outgoing] |
| [q_0000000000000_0000] 1 => 3 (type=HASH_SHUFFLE, key=name2 (TEXT), num=32) |
| |
| SCAN(1) on default.nation as n2 |
| => target list: substr(default.n2.n_name (TEXT),1,4) as name2 |
| => out schema: {(1) name2 (TEXT)} |
| => in schema: {(4) default.n2.n_comment (TEXT), default.n2.n_name (TEXT), default.n2.n_nationkey (INT4), default.n2.n_regionkey (INT4)} |
| |
| ======================================================= |
| Block Id: eb_0000000000000_0000_000002 [LEAF] |
| ======================================================= |
| |
| [Outgoing] |
| [q_0000000000000_0000] 2 => 3 (type=HASH_SHUFFLE, key=name1 (TEXT), num=32) |
| |
| SCAN(0) on default.nation as n1 |
| => target list: default.n1.n_nationkey (INT4), substr(default.n1.n_name (TEXT),1,4) as name1 |
| => out schema: {(2) default.n1.n_nationkey (INT4), name1 (TEXT)} |
| => in schema: {(4) default.n1.n_comment (TEXT), default.n1.n_name (TEXT), default.n1.n_nationkey (INT4), default.n1.n_regionkey (INT4)} |
| |
| ======================================================= |
| Block Id: eb_0000000000000_0000_000003 [INTERMEDIATE] |
| ======================================================= |
| |
| [Incoming] |
| [q_0000000000000_0000] 1 => 3 (type=HASH_SHUFFLE, key=name2 (TEXT), num=32) |
| [q_0000000000000_0000] 2 => 3 (type=HASH_SHUFFLE, key=name1 (TEXT), num=32) |
| |
| [Outgoing] |
| [q_0000000000000_0000] 3 => 4 (type=RANGE_SHUFFLE, key=default.n1.n_nationkey (INT4), num=32) |
| |
| SORT(10) |
| => Sort Keys: default.n1.n_nationkey (INT4) (asc, nulls last) |
| JOIN(6)(INNER) |
| => Join Cond: name1 (TEXT) = name2 (TEXT) |
| => target list: default.n1.n_nationkey (INT4), name1 (TEXT), name2 (TEXT) |
| => out schema: {(3) default.n1.n_nationkey (INT4), name1 (TEXT), name2 (TEXT)} |
| => in schema: {(3) default.n1.n_nationkey (INT4), name1 (TEXT), name2 (TEXT)} |
| SCAN(9) on eb_0000000000000_0000_000002 |
| => out schema: {(2) default.n1.n_nationkey (INT4), name1 (TEXT)} |
| => in schema: {(2) default.n1.n_nationkey (INT4), name1 (TEXT)} |
| SCAN(8) on eb_0000000000000_0000_000001 |
| => out schema: {(1) name2 (TEXT)} |
| => in schema: {(1) name2 (TEXT)} |
| |
| ======================================================= |
| Block Id: eb_0000000000000_0000_000004 [ROOT] |
| ======================================================= |
| |
| [Incoming] |
| [q_0000000000000_0000] 3 => 4 (type=RANGE_SHUFFLE, key=default.n1.n_nationkey (INT4), num=32) |
| |
| [Enforcers] |
| 0: sorted input=eb_0000000000000_0000_000003 |
| |
| SORT(3) |
| => Sort Keys: default.n1.n_nationkey (INT4) (asc, nulls last) |
| SCAN(11) on eb_0000000000000_0000_000003 |
| => out schema: {(3) default.n1.n_nationkey (INT4), name1 (TEXT), name2 (TEXT)} |
| => in schema: {(3) default.n1.n_nationkey (INT4), name1 (TEXT), name2 (TEXT)} |
| |
| ======================================================= |
| Block Id: eb_0000000000000_0000_000005 [TERMINAL] |
| ======================================================= |