query报错!!
query3.close;
query3.sql.clear;
query3.sql.add(' insert into card_detal_bak select * from card_detal a where a.card_number=:card_number ');
query3.parambyname('card_number').asstring:=edit1.text;
query3.ExecSQL ;
报错信息: query3: parameter 'card_number' not found!
什么意思???这个我已经写了呀!请各位高手指教!