Difference between revisions of "AT()"
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==See Also== | ==See Also== | ||
− | [[AT_C]], [[ATNEXT()]], [[GETWORDCOUNT()]], [[GETWORDNUM()]], [[INLIST()]], [[LEFT()]], [[OCCURS()]], [[RAT()]], [[RIGHT()]], [[SET STRESCAPE]], [[STR()]], [[STREXTRACT()]], [[STRPOS()]], [[STRTRAN()]], [[STUFF()]], [[SUBSTR()]] | + | [[AT_C]], [[ATNEXT()]], [[CHRTRAN()]], [[CHRTRANC()]], [[GETWORDCOUNT()]], [[GETWORDNUM()]], [[INLIST()]], [[LEFT()]], [[LEFTC()]], [[LEN()]], [[LENC()]], [[OCCURS()]], [[RAT_C()]], [[RAT()]], [[RIGHT()]], [[RIGHTC()]], [[SET STRESCAPE]], [[STR()]], [[STREXTRACT()]], [[STRPOS()]], [[STRTRAN()]], [[STUFF()]], [[STUFFC()]], [[SUBSTR()]], [[SUBSTRC()]] |
==Description== | ==Description== |
Revision as of 06:31, 15 September 2014
Contents
Purpose
Function to search for a substring
Syntax
AT(<expC1>, <expC2> | <memofield> [,<expN>])
See Also
AT_C, ATNEXT(), CHRTRAN(), CHRTRANC(), GETWORDCOUNT(), GETWORDNUM(), INLIST(), LEFT(), LEFTC(), LEN(), LENC(), OCCURS(), RAT_C(), RAT(), RIGHT(), RIGHTC(), SET STRESCAPE, STR(), STREXTRACT(), STRPOS(), STRTRAN(), STUFF(), STUFFC(), SUBSTR(), SUBSTRC()
Description
AT() is the substring search function. 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() function will return the starting position of the Nth occurrence of <expC1> when the optional numeric expression <expN> is specified. The AT() function is particularly useful in conjunction with the LEFT() or SUBSTR() functions for locating starting points for extracting text from a string.
Example
? at("is", "Lianja is good") 8 cString1 = "is" cString2 = "Lianja is good" ? at(cString1, cString2) 8