Difference between revisions of "MID()"
Yvonne.milne (Talk | contribs) (Created page with "==Purpose== Function to perform substring extraction ==Syntax== MID(<expC> | <memofield>, <expN1> [,<expN2>]) ==See Also== AT(), AT_C(), ATNEXT(), CHRTRAN(),...") |
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==Description== | ==Description== | ||
| − | The MID() 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 | + | The MID() 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 MID() function is very useful for extracting selected information from character strings. |
| − | + | Synonym of [[SUBSTR()]]. | |
==Example== | ==Example== | ||
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[[Category:Functions]] | [[Category:Functions]] | ||
[[Category:String Data Functions]] | [[Category:String Data Functions]] | ||
| + | [[Category:Lianja v2.1]] | ||
Revision as of 10:02, 14 June 2016
Contents
Purpose
Function to perform substring extraction
Syntax
MID(<expC> | <memofield>, <expN1> [,<expN2>])
See Also
AT(), AT_C(), ATNEXT(), CHRTRAN(), CHRTRANC(), CONCAT(), INLIST(), LEFT(), LEFTC(), LEN(), LENC(), OCCURS(), RAT(), RAT_C(), RIGHT(), RIGHTC(), SET EXACT, SET STRCOMPARE, SET STRESCAPE, STR(), STREXTRACT(), STRLEN(), STRSTR(), STRTRAN(), STUFF(), STUFFC(), SUBSTR(), SUBSTRC(), UCASE(), UPPER()
Description
The MID() 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 MID() function is very useful for extracting selected information from character strings.
Synonym of SUBSTR().
Example
m_usrname = "GTW , Gary T West " ? mid(m->m_usrname,at(",",m->m_usrname)+1) Gary T West
