我曾经使用单个代码进行过滤器查询,并使用多个TZquery尝试使用,但它不起作用。所有表都包含client_id列,我希望代码在 TEdit 上使用客户端 ID 搜索信息,它适用于单个 TZquery,但不适用于多个。谢谢。
这是我使用的代码:
zquery1.FilterOptions:=[foCaseInsensitive];
zquery1.Filtered := Length(Edit1.Text) > 0;
if zquery1.Filtered then
zquery1.Filter := 'client_id like ' +
QuotedStr('' + Edit1.Text + '') // Zeos- Syntax
else
zquery1.Filter := '';
zquery2.FilterOptions:=[foCaseInsensitive];
zquery2.Filtered := Length(Edit1.Text) > 0;
if zquery2.Filtered then
zquery2.Filter := 'client_id like ' + QuotedStr('' + Edit1.Text + '') // Zeos- Syntax
else
zquery2.Filter := '';
zquery3.FilterOptions:=[foCaseInsensitive];
zquery3.Filtered := Length(Edit1.Text) > 0;
if zquery3.Filtered then
zquery3.Filter := 'client_id like ' + QuotedStr('' + Edit1.Text + '') // Zeos- Syntax
else
zquery3.Filter := '';
zquery4.FilterOptions:=[foCaseInsensitive];
zquery4.Filtered := Length(Edit1.Text) > 0;
if zquery4.Filtered then
zquery4.Filter := 'client_id like ' + QuotedStr('' + Edit1.Text + '') // Zeos- Syntax
else
zquery4.Filter := '';
我只在过滤为假时更改过滤条件。 所以我会按如下方式编写您的代码
zquery1.FilterOptions:=[foCaseInsensitive];
zquery1.Filtered := false;
if Length(Edit1.Text) > 0 then
begin
zquery1.Filter := 'client_id like ' + QuotedStr(trim(Edit1.Text)) ;
zquery1.Filtered := true;
end;
zquery2.FilterOptions:=[foCaseInsensitive];
zquery2.Filtered := false;
if Length(Edit1.Text) > 0 then
begin
zquery2.Filter := 'client_id like ' + QuotedStr('' + Edit1.Text + '') // Zeos- Syntax
zquery2.Filtered := true;
end;
zquery3.FilterOptions:=[foCaseInsensitive];
zquery3.Filtered := false;
if Length(Edit1.Text) > 0 then
begin
zquery3.Filter := 'client_id like ' + QuotedStr('' + Edit1.Text + '') // Zeos- Syntax
zquery3.Filtered := true;
end;
zquery3.FilterOptions:=[foCaseInsensitive];
zquery3.Filtered := false;
if Length(Edit1.Text) > 0 then
begin
zquery3.Filter := 'client_id like ' + QuotedStr('' + Edit1.Text + '') // Zeos- Syntax
zquery3.Filtered := true;
end;