MySQL Tutorial/Math Numeric Functions/ASIN

ASIN(X) returns the arc sine of X. Returns NULL if X is not in the range -1 to 1.

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mysql> mysql> SELECT ASIN(0.2); +------------------+ | ASIN(0.2) | +------------------+ | 0.20135792079033 | +------------------+ 1 row in set (0.00 sec) mysql></source>

SELECT ASIN("foo");

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mysql> mysql> mysql> SELECT ASIN("foo"); +-------------+ | ASIN("foo") | +-------------+ | 0 | +-------------+ 1 row in set, 1 warning (0.00 sec) mysql> mysql> SHOW WARNINGS; +---------+------+-----------------------------------------+ | Level | Code | Message | +---------+------+-----------------------------------------+ | Warning | 1292 | Truncated incorrect DOUBLE value: "foo" | +---------+------+-----------------------------------------+ 1 row in set (0.00 sec) mysql></source>