STRTOL function - Amazon Redshift
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STRTOL function

Converts a string expression of a number of the specified base to the equivalent integer value. The converted value must be within the signed 64-bit range.

Syntax

STRTOL(num_string, base)

Arguments

num_string

String expression of a number to be converted. If num_string is empty ( '' ) or begins with the null character ('\0'), the converted value is 0. If num_string is a column containing a NULL value, STRTOL returns NULL. The string can begin with any amount of white space, optionally followed by a single plus '+' or minus '-' sign to indicate positive or negative. The default is '+'. If base is 16, the string can optionally begin with '0x'.

base

INTEGER between 2 and 36.

Return type

BIGINT

If num_string is null, the function returns NULL.

Examples

To convert string and base value pairs to integers, use the following examples.

SELECT STRTOL('0xf',16); +--------+ | strtol | +--------+ | 15 | +--------+ SELECT STRTOL('abcd1234',16); +------------+ | strtol | +------------+ | 2882343476 | +------------+ SELECT STRTOL('1234567', 10); +---------+ | strtol | +---------+ | 1234567 | +---------+ SELECT STRTOL('1234567', 8); +--------+ | strtol | +--------+ | 342391 | +--------+ SELECT STRTOL('110101', 2); +--------+ | strtol | +--------+ | 53 | +--------+ SELECT STRTOL('\0', 2); +--------+ | strtol | +--------+ | 0 | +--------+