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IF
If the first argument is true, returns second argument. If the first argument is false or NULL, returns third argument.
Syntax
IF (val, iftrue, iffalse)
Arguments
- Any SQL objects
Return Type
The default return type depends on the type of arguments iftrue
and iffalse
. For example, if iftrue
or iffalse
result in an integer, the return type is an integer. If they are both strings, the return type is a string, and so on.
Examples
memsql> select if(0, 'a', 'b'), if('1', 'a', 'b'), if(NULL, 'a', 'b');
+-----------------+-------------------+--------------------+
| if(0, 'a', 'b') | if('1', 'a', 'b') | if(NULL, 'a', 'b') |
+-----------------+-------------------+--------------------+
| b | a | b |
+-----------------+-------------------+--------------------+