| SELECT explode(col) AS myCol FROM | |
| (select * from (SELECT array(1,2,3) AS col FROM src LIMIT 1)ea | |
| UNION ALL | |
| select * from (SELECT IF(false, array(1,2,3), NULL) AS col FROM src LIMIT 1)eb) a; | |
| SELECT explode(col) AS (myCol1,myCol2) FROM | |
| (select * from (SELECT map(1,'one',2,'two',3,'three') AS col FROM src LIMIT 1)ea | |
| UNION ALL | |
| select * from (SELECT IF(false, map(1,'one',2,'two',3,'three'), NULL) AS col FROM src LIMIT 1)eb ) a; | |