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()]], [[AT_C()]], [[ATNEXT()]], [[CHRTRAN()]], [[CHRTRANC()]], [[CONCAT()]], [[INLIST()]], [[LEFT()]], [[LEFTC()]], [[LEN()]], [[LENC()]], [[MID()]], [[OCCURS()]], [[RAT()]], [[RAT_C()]], [[RIGHT()]], [[RIGHTC()]], [[SET EXACT]], [[SET STRCOMPARE]], [[SET STRESCAPE]], [[STR()]], [[STR_COMPRESS()]], [[STR_UNCOMPRESS()]], [[STREXTRACT()]], [[STRLEN()]], [[STRSTR()]], [[STRTRAN()]], [[STUFF()]], [[STUFFC()]], [[SUBSTRC()]], [[UCASE()]], [[UPPER()]] |
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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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</code> | </code> | ||
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[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
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[[Category:String Data Functions]] | [[Category:String Data Functions]] | ||
Latest revision as of 12:44, 22 March 2021
Contents
Purpose
Function to perform substring extraction
Syntax
SUBSTR(<expC> | <memofield>, <expN1> [,<expN2>])
See Also
AT(), AT_C(), ATNEXT(), CHRTRAN(), CHRTRANC(), CONCAT(), INLIST(), LEFT(), LEFTC(), LEN(), LENC(), MID(), OCCURS(), RAT(), RAT_C(), RIGHT(), RIGHTC(), SET EXACT, SET STRCOMPARE, SET STRESCAPE, STR(), STR_COMPRESS(), STR_UNCOMPRESS(), STREXTRACT(), STRLEN(), STRSTR(), STRTRAN(), STUFF(), STUFFC(), SUBSTRC(), UCASE(), UPPER()
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
