crc32

Returns the 32-bit cyclic redundancy check (CRC) value of a string. If the input is NULL, NULL is returned.

This function is used for error detection. It uses the CRC32 algorithm to detect changes between source and target data.

This function is supported from v3.3 onwards.

Syntax

Haskell

BIGINT crc32(VARCHAR str)

Parameters

str: the string for which you want to calculate the CRC32 value.

Examples

Plain

mysql > select crc32("starrocks");
+--------------------+
| crc32('starrocks') |
+--------------------+
|         2312449062 |
+--------------------+

mysql > select crc32(null);
+-------------+
| crc32(NULL) |
+-------------+
|        NULL |
+-------------+
1 row in set (0.18 sec)

Keywords

CRC32