IF Function

Complete IF() function reference: IF(expr1,expr2,expr3) conditional syntax, TRUE/NULL evaluation rules, return type context (numeric/string), and examples.

Syntax

IF(expr1,expr2,expr3)

Description

If expr1 is TRUE (expr1 <> 0 and expr1 <> NULL) then IF() returns expr2; otherwise it returns expr3. IF() returns a numeric or string value, depending on the context in which it is used.

Note: There is also an IF statement which differs from theIF() function described here.

Examples

SELECT IF(1>2,2,3);
+-------------+
| IF(1>2,2,3) |
+-------------+
|           3 |
+-------------+

SELECT IF(1<2,'yes','no');
+--------------------+
| IF(1<2,'yes','no') |
+--------------------+
| yes                |
+--------------------+

SELECT IF(STRCMP('test','test1'),'no','yes');
+---------------------------------------+
| IF(STRCMP('test','test1'),'no','yes') |
+---------------------------------------+
| no                                    |
+---------------------------------------+

See Also

There is also an IF statement, which differs from the IF() function described above.

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