AT C()

Purpose

Function to search for a substring (double byte character sets)

Syntax

AT_C(<expC1>, <expC2> | <memofield> [,<expN>])

See Also

AT(), CHRTRAN(), CHRTRANC(), LEFT(), LEFTC(), LEN(), LENC(), RAT(), RAT_C(), RIGHT(), RIGHTC(), SET STRESCAPE, STREXTRACT(), STRLEN(), STRTRAN(), STUFF(), STUFFC(), SUBSTR(), SUBSTRC()

Description

AT_C() is the substring search function for double byte character sets. It returns a number signifying the starting position of <expC1> in <expC2> or in the specified memo field. If the substring is not contained within <expC2> or <memofield>, then the function returns the value 0. The leftmost character of a string is in character position 1. The AT_C() function will return the starting position of the Nth occurrence of <expC1> when the optional numeric expression <expN> is specified. The AT_C() function is particularly useful in conjunction with the LEFTC() or SUBSTRC() functions for locating starting points for extracting text from a string.

Example

nStartPosition = at_c(cDBString, cDBSubString, nOccurrence)