Difference between revisions of "SUBSTR()"
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==Purpose== | ==Purpose== | ||
Function to perform substring extraction | Function to perform substring extraction | ||
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==Syntax== | ==Syntax== | ||
SUBSTR(<expC> | <memofield>, <expN1> [,<expN2>]) | SUBSTR(<expC> | <memofield>, <expN1> [,<expN2>]) | ||
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==See Also== | ==See Also== | ||
[[AT()]], [[ATNEXT()]], [[INLIST()]], [[LEFT()]], [[OCCURS()]], [[RAT()]], [[RIGHT()]], [[SET STRESCAPE]], [[STR()]], [[STREXTRACT()]], [[STRSTR()]], [[STRTRAN()]], [[STUFF()]] | [[AT()]], [[ATNEXT()]], [[INLIST()]], [[LEFT()]], [[OCCURS()]], [[RAT()]], [[RIGHT()]], [[SET STRESCAPE]], [[STR()]], [[STREXTRACT()]], [[STRSTR()]], [[STRTRAN()]], [[STUFF()]] | ||
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==Description== | ==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. | 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. | ||
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==Example== | ==Example== | ||
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Gary T West | Gary T West | ||
</code> | </code> | ||
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==Products== | ==Products== | ||
Revision as of 11:16, 12 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
