Difference between revisions of "CONTAINS()"
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==Purpose== | ==Purpose== | ||
Function to perform a case-insensitive search of a record's character and memo (optional) fields for a specified character string | Function to perform a case-insensitive search of a record's character and memo (optional) fields for a specified character string | ||
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==Syntax== | ==Syntax== | ||
CONTAINS(<expC>,[<expL>|<expN>]) | CONTAINS(<expC>,[<expL>|<expN>]) | ||
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==See Also== | ==See Also== | ||
| − | [[BETWEEN()]], [[CHROVERLAP()]], [[EMPTY()]], [[EVALUATE()]], [[EXPRCHECK()]], [[FOR()]], [[INDEX]], [[INLIST()]], [[INRANGE()]], [[ISALPHA()]], [[ISBLANK()]], [[ISDIGIT()]], [[LOWER()]], [[MAX()]], [[MAXVALUES()]], [[MIN()]], [[MINVALUES()]], [[MTOS()]], [[PROPER() | + | [[BETWEEN()]], [[CHROVERLAP()]], [[EMPTY()]], [[EVALUATE()]], [[EXPRCHECK()]], [[FOR()]], [[HTML_TOPLAINTEXT()]], [[INDEX]], [[INLIST()]], [[INRANGE()]], [[ISALPHA()]], [[ISBLANK()]], [[ISDIGIT()]], [[LOWER()]], [[MAX()]], [[MAXVALUES()]], [[MIN()]], [[MINVALUES()]], [[MTOS()]], [[PROPER()]], [[SEEK]], [[SEEK()]], [[TYPE()]], [[UPPER()]], [[VARTYPE()]] |
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==Description== | ==Description== | ||
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A case-insensitive search is performed on the current record's character fields. If the optional <expL> is .T. (True) or the optional <expN> is 1, memo fields are also checked, otherwise they are excluded from the search. | A case-insensitive search is performed on the current record's character fields. If the optional <expL> is .T. (True) or the optional <expN> is 1, memo fields are also checked, otherwise they are excluded from the search. | ||
| − | + | {| class="wikitable" width="100%" | |
| − | {| class="wikitable" | + | |
!Parameters||Description | !Parameters||Description | ||
|- | |- | ||
| − | |<expC>||The character string to search for. | + | |<expC>||The character string to search for. Delimit words or phrases with commas |
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|<expL>||If .T. (True), memos are included in the search. | |<expL>||If .T. (True), memos are included in the search. | ||
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|} | |} | ||
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The CONTAINS() function is particularly useful in creating full text-search indexes, as shown in the example below. | The CONTAINS() function is particularly useful in creating full text-search indexes, as shown in the example below. | ||
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==Example== | ==Example== | ||
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use products | use products | ||
// Restrict index to product records in category 2 (condiments) with a character field containing string "bottled", memos excluded | // Restrict index to product records in category 2 (condiments) with a character field containing string "bottled", memos excluded | ||
| − | index on lower(productname) for contains("bottles",.F.) and categoryid = 2 tag bottled | + | index on lower(productname) for contains("bottles,jars,cans",.F.) and categoryid = 2 tag bottled |
</code> | </code> | ||
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[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
| − | [[Category: | + | [[Category:Formatting Functions]] |
| − | [[Category: | + | [[Category:Cursor Functions]] |
| − | [[Category: | + | [[Category:Memos Functions]] |
| − | [[Category: | + | [[Category:Search Functions]] |
| + | [[Category:Lianja VFP Extensions]] | ||
| + | [[Category:VFP Function Extensions]] | ||
Latest revision as of 09:25, 20 September 2016
Contents
Purpose
Function to perform a case-insensitive search of a record's character and memo (optional) fields for a specified character string
Syntax
CONTAINS(<expC>,[<expL>|<expN>])
See Also
BETWEEN(), CHROVERLAP(), EMPTY(), EVALUATE(), EXPRCHECK(), FOR(), HTML_TOPLAINTEXT(), INDEX, INLIST(), INRANGE(), ISALPHA(), ISBLANK(), ISDIGIT(), LOWER(), MAX(), MAXVALUES(), MIN(), MINVALUES(), MTOS(), PROPER(), SEEK, SEEK(), TYPE(), UPPER(), VARTYPE()
Description
The CONTAINS() function returns .T. (True) if the current record contains the specified character string, <expC>.
A case-insensitive search is performed on the current record's character fields. If the optional <expL> is .T. (True) or the optional <expN> is 1, memo fields are also checked, otherwise they are excluded from the search.
| Parameters | Description |
|---|---|
| <expC> | The character string to search for. Delimit words or phrases with commas |
| <expL> | If .T. (True), memos are included in the search. |
| <expN> | If 1, memos are included in the search. |
The CONTAINS() function is particularly useful in creating full text-search indexes, as shown in the example below.
Example
open database southwind use products // Restrict index to product records in category 2 (condiments) with a character field containing string "bottled", memos excluded index on lower(productname) for contains("bottles,jars,cans",.F.) and categoryid = 2 tag bottled
