with query do
begin
close;
Sql.clear;
Sql.add('select * from tabel1 where 日期 between :date1 and :date2);
parameters[0]:=strtodate('1957-01-01');
parameters[1]:=strtodate('1990-02-02');
open;
end;
begin
close;
Sql.clear;
Sql.add('select * from tabel1 where 日期 between :date1 and :date2);
parameters[0]:=strtodate('1957-01-01');
parameters[1]:=strtodate('1990-02-02');
open;
end;
parameters[0]:=strtodate('1957-01-01');
parameters[1]:=strtodate('1990-02-02');
begin
close;
Sql.clear;
Sql.add('select * from tabel1 where 日期 between :date1 and :date2);
parameters[0]:=strtodate('1957-01-01');
parameters[1]:=strtodate('1990-02-02');
open;
end;