This MySQL function returns the given string's cyclic redundancy check value as a 32-bit unsigned value.
Below is the syntax for this command. Text within square brackets (i.e, [ and ] ) are optional. Choices are separated by bars (i.e, | ). Ellipses preceded by a comma indicates a repeating pattern. Ellipses before or after syntax are used to highlight a relevant except from the larger syntax. Text displayed in italic letters represent text that should be replaced with the specific names related to the database (e.g., column with the name of the column).
This function returns the given string's cyclic redundancy check value as a 32-bit unsigned value. It's available as of version 4.1 of MySQL. It returns NULL if given a NULL value. Even if a numeric value is given, it treats the value as a string.
SELECT CRC32('test'); +---------------+ | CRC32('test') | +---------------+ | 3632233996 | +---------------+