CRC32 Function
CRC32 is an error-detecting function that uses a CRC32 algorithm to detect changes between source and target data. The CRC32 function converts a variable-length string into an 8-character string that is a text representation of the hexadecimal value of a 32 bit-binary sequence.
Syntax
CRC32(string)
Arguments
- string
-
A variable-length string.
Return Type
The CRC32 function returns an 8-character string that is a text representation of the hexadecimal value of a 32-bit binary sequence. The Amazon Redshift CRC32 function is based on the CRC-32C polynomial.
Example
The following example shows the 32-bit value for the string 'Amazon Redshift':
select crc32('Amazon Redshift'); crc32 ---------------------------------- f2726906 (1 row)
