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)


## 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]          |
---------+-----------------+