adoquery1.close; adoquery1.sql.text:='select * from User where uid=''user1'' and passwd=''123456'''; adoquery1.open; edit1.text:=adoquery1.fieldbyname('name').asstring;
adoquery1.close; adoquery1.sql.text:='select * from User where uid=''user1'' and passwd=''123456'''; adoquery1.parpare; adoquery1.open; edit1.text:=adoquery1.fieldbyname('name').asstring;
adoquery1.close; adoquery1.sql.text:='select * from User where uid=''user1'' and passwd=''123456'''; adoquery1.open; if adoquery1.recordcount>0 then edit1.text:=adoquery1.fieldbyname('name').asstring;
adoquery1.sql.text:='select * from User where uid=''user1'' and passwd=''123456''';
adoquery1.open;
edit1.text:=adoquery1.fieldbyname('name').asstring;
adoquery1.sql.text:='select * from User where uid=''user1'' and passwd=''123456''';
adoquery1.parpare;
adoquery1.open;
edit1.text:=adoquery1.fieldbyname('name').asstring;
adoquery1.sql.text:='select * from User where uid=''user1'' and passwd=''123456''';
adoquery1.open;
if adoquery1.recordcount>0 then
edit1.text:=adoquery1.fieldbyname('name').asstring;
如何判断返回的结果数量?