| --! qt:dataset:src |
| set hive.fetch.task.conversion=more; |
| |
| DESCRIBE FUNCTION if; |
| DESCRIBE FUNCTION EXTENDED if; |
| |
| EXPLAIN |
| SELECT IF(TRUE, 1, 2) AS COL1, |
| IF(FALSE, CAST(NULL AS STRING), CAST(1 AS STRING)) AS COL2, |
| IF(1=1, IF(2=2, 1, 2), IF(3=3, 3, 4)) AS COL3, |
| IF(2=2, 1, NULL) AS COL4, |
| IF(2=2, NULL, 1) AS COL5, |
| IF(IF(TRUE, NULL, FALSE), 1, 2) AS COL6 |
| FROM src tablesample (1 rows); |
| |
| |
| SELECT IF(TRUE, 1, 2) AS COL1, |
| IF(FALSE, CAST(NULL AS STRING), CAST(1 AS STRING)) AS COL2, |
| IF(1=1, IF(2=2, 1, 2), IF(3=3, 3, 4)) AS COL3, |
| IF(2=2, 1, NULL) AS COL4, |
| IF(2=2, NULL, 1) AS COL5, |
| IF(IF(TRUE, NULL, FALSE), 1, 2) AS COL6 |
| FROM src tablesample (1 rows); |
| |
| -- Type conversions |
| EXPLAIN |
| SELECT IF(TRUE, CAST(128 AS SMALLINT), CAST(1 AS TINYINT)) AS COL1, |
| IF(FALSE, 1, 1.1) AS COL2, |
| IF(FALSE, 1, 'ABC') AS COL3, |
| IF(FALSE, 'ABC', 12.3) AS COL4 |
| FROM src tablesample (1 rows); |
| |
| SELECT IF(TRUE, CAST(128 AS SMALLINT), CAST(1 AS TINYINT)) AS COL1, |
| IF(FALSE, 1, 1.1) AS COL2, |
| IF(FALSE, 1, 'ABC') AS COL3, |
| IF(FALSE, 'ABC', 12.3) AS COL4 |
| FROM src tablesample (1 rows); |