Difference between revisions of "SUBSTR()"

Revision as of 01:26, 9 December 2012

Purpose

Function to perform substring extraction

Syntax

SUBSTR(<expC> | <memofield>, <expN1> [,<expN2>])

See Also

AT(), ATNEXT(), INLIST(), LEFT(), OCCURS(), RAT(), RIGHT(), SET STRESCAPE, STR(), STREXTRACT(), STRSTR(), STRTRAN(), STUFF()

Description

The SUBSTR() function extracts a substring from <expC> or <memofield> starting at position <expN1> of width <expN2>. If <expN1> is negative, the extraction starts from the right side of the string. If <expN2> is omitted, a substring will be extracted up to the end of <expC>. When used in conjunction with the AT() function, the SUBSTR() function is very useful for extracting selected information from character strings.

Example

m_usrname = "GTW  , Gary T West  "
? substr(m->m_usrname,at(",",m->m_usrname)+1)
Gary T West

Products

Lianja Server, Lianja