BYTE_SUBSTR64 and BYTE_SUBSTR functions

Function

The BYTE_SUBSTR64 and BYTE_SUBSTR functions return the byte substring of the large object column or variable parameter.

Syntax

BYTE_SUBSTR64large-object-column, start, length )
BYTE_SUBSTRlarge-object-column, start, length )

Parameters

large-object-column The name of a LONG VARCHAR or LONG BINARY column or variable.

start An integer expression indicating the start of the substring. A positive integer starts from the beginning of the string, with the first byte at position 1. A negative integer specifies a substring starting from the end of the string, with the final byte at position -1.

length An integer expression indicating the length of the substring. A positive length specifies the number of bytes to return, starting at the start position. A negative length specifies the number of bytes to return, ending at the start position.

Usage