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)

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Usage notes¶

Always returns a floating point number, even if the input expression is of an integer type.
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]          |
---------+-----------------+

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