SQRT

Syntax

Description of the illustration sqrt.gif

Description of the illustration sqrt.eps

Purpose

SQRT returns the square root of n.

This function takes as an argument any numeric data type or any nonnumeric data type that can be implicitly converted to a numeric data type. The function returns the same data type as the numeric data type of the argument.

See Also: Table 2-8 for more information on implicit conversion

• If n resolves to a NUMBER, then the value n cannot be negative. SQRT returns a real number.

• If n resolves to a binary floating-point number (BINARY_FLOAT or BINARY_DOUBLE):

  • If n >= 0, then the result is positive.

  • If n = -0, then the result is -0.

  • If n < 0, then the result is NaN.

Examples

The following example returns the square root of 26:

SELECT SQRT(26) "Square root" FROM DUAL;

Square root
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5.09901951