CASE
From SQLZoo
| CASE WHEN b1 THEN v1 END | ||
|---|---|---|
| Engine | OK | Alternative |
| ingres | Yes | |
| mysql | Yes | |
| oracle | Yes | |
| postgres | Yes | |
| sqlserver | Yes | |
CASE
CASE allows you to return different values under different conditions.
If there no conditions match (and there is not ELSE) then NULL is returned.
CASE WHEN condition1 THEN value1 WHEN condition2 THEN value2 ELSE def_value END
SELECT name, population ,CASE WHEN population<1000000 THEN 'small' WHEN population<10000000 THEN 'medium' ELSE 'large' END FROM bbc See also
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