Difference Between = and <=> Operators in MySQL
Both = and <=> are comparison operators in MySQL, but they behave differently when dealing with NULL values.
=checks if two values are equal.If either value is NULL, the result is NULL (unknown).
Cannot compare NULL values reliably.
<=>is MySQL's NULL-safe equality operator.Returns 1 (TRUE) only when the two values are equal — including when both are NULL.
Returns 0 (FALSE) when not equal.
=returns NULL when comparing to NULL;<=>returns 1 if both sides are NULL.=is a standard equality operator;<=>is specifically designed for NULL-safe comparisons.<=>is often used in conditions where NULL values must be treated as valid comparisons (e.g., WHERE column <=> variable).
In short: use <=> when you want reliable comparisons that include NULL values; use = for normal equality checks.