Using LIKE statement for filtering

Question

Im using this code to filter my table:

Table.Filtered := False;
Table.Filter := \'[\' + Field_Search + \'] LIKE \'\'%\' + Edit_Search.Text + \'%\'\'\';
Tabl         


        

Answer 1

Table.Filtered := False;
Table.Filter := Field_Search + ' LIKE ' + QuotedStr('*' + Edit_Search.Text + '*');
Table.Filtered := True;

Answer 2

you should use this :

   DataModule.Table.Filtered := False;
   DataModule.Table.Filter := 'Field_Name' + ' LIKE ' + QuotedStr(Edt_SearchByCode.Text +'%');
   DataModule.Table.Filtered := True;

and will work like a Magic and no use of TQuery any more .... and if you want Matching does not take case-sensitivity into account. you should use this code instead:

   DataModule.Table.Filtered := False;
   DataModule.Table.FilterOptions := [foCaseInsensitive];
   DataModule.Table.Filter := 'Field_Name' + ' LIKE ' + QuotedStr(Edt_SearchByCode.Text +'%');
   DataModule.Table.Filtered := True;

Answer 3

I am using mostly with TEdit here is the code

if (EditSerarch.Text <> '') then
begin
FDQQuery.Filtered := false;
FDQQuery.Filter:=   'Name LIKE'+ QuotedStr('%'+EditSerarch.Text+'%') +
            ' OR Company LIKE '+ QuotedStr('%'+EditSerarch.Text+'%') +
              ' OR Phone LIKE '+ QuotedStr('%'+EditSerarch.Text+'%') +
             ' OR Mobile LIKE '+ QuotedStr('%'+EditSerarch.Text+'%');
FDQQuery.Filtered:= True;
end else FDQQuery.Filtered := false;

Answer 4

I recommend to use a SQL Query to perform this operation.

Example:

query1.SQL.Text:='Select * FROM table_name WHERE field like '+ QuotedStr(edit1.text+'%');
query1.Active:=true;

Answer 5

The following Code will work as Like as well:

if Edit1.Text <>'' then
begin
Query1.Filter :='FieldName ='+quotedstr('*'+ edit1.Text +'*');
Query1.Filtered:=true;
end
else
begin query1.Filtered :=false; end;

Answer 6

A TTable.Filter isn't a SQL query. LIKE isn't supported (neither is IN). The supported operators are =, <>, >, <, >=, '<=,AND,NOTandOR`, according to the documentation

For more complicated filtering, use the TDataSet.OnFilterRecord event:

procedure TForm1.Table1FilterRecord(Dataset: TDataset; var Accept: Boolean);
begin
  // Don't remember if D7 supports DataSet[FieldName] syntax; if not,
  // use DataSet.FieldByName instead, or a persistent field.
  Accept := Pos(Edit_Search.Text, DataSet[SearchField].AsString) > 0;
end;