mysql where case when code example
Example 1: mysql case
select title, length,
CASE
when length < 50 then 'very short film'
when length < 90 then 'short film'
when length < 120 then 'medium length film'
when length > 120 then 'long film'
else 'unknown length'
END
from film;
select title, length,
CASE
when length < 50 then 'very short film'
when length < 90 then 'short film'
when length < 120 then 'medium length film'
when length > 120 then 'long film'
else 'unknown length'
END AS film_length
from film;
+
| title | length | film_length |
+
| ACADEMY DINOSAUR | 86 | short film |
| ACE GOLDFINGER | 48 | very short film |
| ADAPTATION HOLES | 50 | short film |
| AFFAIR PREJUDICE | 117 | medium length film |
| AFRICAN EGG | 130 | long film |
| AGENT TRUMAN | 169 | long film |
| AIRPLANE SIERRA | 62 | short film |
| AIRPORT POLLOCK | 54 | short film |
| ALABAMA DEVIL | 114 | medium length film |
| ALADDIN CALENDAR | 63 | short film |
| ALAMO VIDEOTAPE | 126 | long film |
| ALASKA PHANTOM | 136 | long film |
| ALI FOREVER | 150 | long film |
| ALICE FANTASIA | 94 | medium length film |
| ALIEN CENTER | 46 | very short film |
Example 2: mysql case when on date
SELECT
id,
CASE
WHEN date_activated > '2011-11-23 18:30:00' THEN 'after'
WHEN date_activated > '2010-01-20 00:00:00' THEN 'before'
ELSE 'not yet'
END AS date_note
FROM table1;