MySQL IF() Function

Return "YES" if the condition is TRUE, or "NO" if the condition is FALSE:

SELECT IF(500<1000, "YES", "NO");

Definition and Usage

The IF() function returns a value if a condition is TRUE, or another value if a condition is FALSE.

IF(condition, value_if_true, value_if_false)

Parameter	Description
condition	Required. The value to test
value_if_true	Required. The value to return if condition is TRUE
value_if_false	Required. The value to return if condition is FALSE

Works in:	From MySQL 4.0

Return 5 if the condition is TRUE, or 10 if the condition is FALSE:

SELECT IF(500<1000, 5, 10);

Test whether two strings are the same and return "YES" if they are, or "NO" if not:

SELECT IF(STRCMP("hello","bye") = 0, "YES", "NO");

Return "MORE" if the condition is TRUE, or "LESS" if the condition is FALSE:

SELECT OrderID, Quantity, IF(Quantity>10, "MORE", "LESS")
FROM OrderDetails;