sql= "select * from "+ "buy_and_sell_info "+"where "+column_name+"="+column_value;
改为sql= "select * from "+ "buy_and_sell_info "+"where "+column_name+"='"+column_value+"'";
改为sql= "select * from "+ "buy_and_sell_info "+"where "+column_name+"='"+column_value+"'";
解决方案 »
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