HEXTOINT function [Data type conversion]

Returns the unsigned BIGINT equivalent of a hexadecimal string.

HEXTOINT ( hexadecimal-string )

0xhex-string

0Xhex-string

hex-string

The following statements return the value 420:

SELECT HEXTOINT ( '0x1A4' ) FROM iq_dummy

SELECT HEXTOINT ( '0X1A4' ) FROM iq_dummy

SELECT HEXTOINT ( '1A4' ) FROM iq_dummy

For invalid hexadecimal input, Sybase IQ returns an error unless the CONVERSION_ERROR option is set to OFF. When CONVERSION_ERROR is OFF, invalid hexadecimal input returns NULL.

The database option ASE_FUNCTION_BEHAVIOR specifies that output of Sybase IQ functions, including INTTOHEX and HEXTOINT, is consistent with the output of Adaptive Server Enterprise functions. When the ASE_FUNCTION_BEHAVIOR option is enabled (the value is ON):

• Sybase IQ HEXTOINT assumes input is a hexadecimal string of 8 characters; if the length is less than 8 characters long, the string is left padded with zeros.

• Sybase IQ HEXTOINT accepts a maximum of 16 characters prefixed with 0x (a total of 18 characters); use caution, as a large input value can result in an integer value that overflows the 32-bit signed integer output size.

• The data type of the output of the Sybase IQ HEXTOINT function is assumed to be a 32-bit signed integer.

• Sybase IQ HEXTOINT accepts a 32-bit hexadecimal integer as a signed representation.

• For more than 8 hexadecimal characters, Sybase IQ HEXTOINT considers only relevant characters.