| --! qt:dataset:src |
| set hive.fetch.task.conversion=more; |
| |
| DESCRIBE FUNCTION when; |
| DESCRIBE FUNCTION EXTENDED when; |
| |
| EXPLAIN |
| SELECT CASE |
| WHEN 1=1 THEN 2 |
| WHEN 1=3 THEN 4 |
| ELSE 5 |
| END, |
| CASE |
| WHEN 6=7 THEN 8 |
| ELSE 9 |
| END, |
| CASE |
| WHEN 10=11 THEN 12 |
| WHEN 13=13 THEN 14 |
| END, |
| CASE |
| WHEN 15=16 THEN 17 |
| WHEN 18=19 THEN 20 |
| END, |
| CASE |
| WHEN 21=22 THEN NULL |
| WHEN 23=23 THEN 24 |
| END, |
| CASE |
| WHEN 25=26 THEN 27 |
| WHEN 28=28 THEN NULL |
| END |
| FROM src tablesample (1 rows); |
| |
| SELECT CASE |
| WHEN 1=1 THEN 2 |
| WHEN 1=3 THEN 4 |
| ELSE 5 |
| END, |
| CASE |
| WHEN 6=7 THEN 8 |
| ELSE 9 |
| END, |
| CASE |
| WHEN 10=11 THEN 12 |
| WHEN 13=13 THEN 14 |
| END, |
| CASE |
| WHEN 15=16 THEN 17 |
| WHEN 18=19 THEN 20 |
| END, |
| CASE |
| WHEN 21=22 THEN NULL |
| WHEN 23=23 THEN 24 |
| END, |
| CASE |
| WHEN 25=26 THEN 27 |
| WHEN 28=28 THEN NULL |
| END |
| FROM src tablesample (1 rows); |
| |
| -- Allow compatible types to be used in return value |
| SELECT CASE |
| WHEN 1=1 THEN 123.0BD |
| ELSE 0.0BD |
| END, |
| CASE |
| WHEN 1=1 THEN 123 |
| WHEN 1=2 THEN 1.0 |
| ELSE 222.02BD |
| END, |
| CASE |
| WHEN 1=1 THEN 'abcd' |
| WHEN 1=2 THEN cast('efgh' as varchar(10)) |
| ELSE cast('ijkl' as char(4)) |
| END |
| FROM src tablesample (1 rows); |