Categories:: Numeric functions (Exponent and Root)

SQUARE¶

Returns the square of a numeric expression (i.e. a numeric expression multiplied by itself).

Syntax¶

SQUARE(expr)

Returns¶

If the input expression is of type DECFLOAT, the returned type is DECFLOAT. Otherwise, the returned type is FLOAT.

Usage notes¶

More efficient than the expression x*x, so square(x) is preferred when a floating-point result is acceptable.

Examples¶

SELECT column1, square(column1)
FROM (values (0), (1), (-2), (3.15), (null)) v;

---------+-----------------+
 column1 | square(column1) |
---------+-----------------+
 0       | 0               |
 1       | 1               |
 -2      | 4               |
 3.15    | 9.9225          |
 [NULL]  | [NULL]          |
---------+-----------------+