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How to filter on substrings within a string field's value Turn on/off line numbers in source code. Switch to Orginial background IDE or DSP color Comment or reply to this aritlce/tip for discussion. Bookmark this article to my favorite article(s). Print this article
28-Aug-02
Category
Database-SQL
Language
Delphi All Versions
Views
90
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Publisher:
DSP, Administrator
Reference URL:
DKB
			Author: Tomas Rutkauskas 

How to filter on substrings within a string field's value

Answer:

In the TTable OnFilter event:

1   var
2     sp, ss: ShortString
3   begin
4     with DataSet do
5     begin
6       sp := FilterPosition.Text; {TEdit containing substring to be filtered}
7       ss := AnsiUpperCase(FieldByName('MyField').asString);
8       Accept := Pos(sp, ss) > 0;
9     end;
10  end;


or with an SQL script:

SELECT * FROM MyTable
WHERE UPPER(MyField)LIKE "%UPPER(MySubstring)%";

			
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