field not found 字段没找到，通常这种错误是由于数据源的数据进行 query 之后，导致了 dbedit 控件需要的字段在数据源里找不到。建议检查 点击查找 的代码段中，如果是用 query 编写 sql 语句进行查询，则检查 sql 语句中是否包含 dbedit 控件中匹配的字段。
解析 有几个问题:adoquery1.Close; //先关闭在清除adoquery1.SQL.Clear;adoquery1.sql.add('select avg(English) as 平均 from Subject');adoquery1.Open;//查询用Open,插入,新增,更新等等用ExecSQL...结果一 题目 Delphi 查询 Access 错误:Field 平均 not found adoquery1.SQL.Clear; adoquery1.Close;...
先试试直接在数据库查询，数据库查询语句没错的话，就是你在把结果赋值的时候出的错。嗯你用*号能查出来，说明你的语句和环境没有错误。你用Select Name查不出来。那么有两种可能。1、表中是否有name这个字段2、如果name不是你随手写的，那么name应该是保留字、你表里面有name这个列么?你的guanmu...
Sometimes when I double click on a record, I get a "Key field not found" error, after that I'm unable to select records in the grid. Usually it works without any problems, so it doesn't happen everytime. The grid works fine in other softwares I built, so I probably did something ...
问我收到此错误:项目引发异常类EDatabaseError，并显示消息'sql: Field‘not found’EN项目启动报了这个...
When I run the program the data displays properly at first. However, when I enter one of the fields on the Detail grid I get the error "Key Field not found". There is always one row that does not give the "Key Field not found" error, but in that...
'object' does not contain a definition for 'Text' and no accessible extension method 'Text' accepting a first argument of type 'object' could be found 'sender' parameter not working with switch/case block? 'SQL server Login Failed for User' error specifically when running windows service 'Str...
重新拖一个控件上去，并且设置原先的属性。可能在关闭程序的时候，这个控件丢了，当你重新添加进去的时候，这个控件不在容器中，但是代码依然存在。
However, the tool may not adequately address the diverse socioeconomic factors influencing dietary practices in other regions. These limitations underscore the need for a context-specific tool like the SLn-SNKQ, which is culturally adapted for the Sri Lankan athletic population. Hence, developing and...
delphi出现Dataset not in edit or insert mode的问题如下代码procedure TStock.Button2Click(Sender: TObject);beginAdoTable2.Edit;AdoTable2.FieldValues['库存数'] := AdoTable2.FieldValues['库存数']+AdoTable1.FieldValues['进货数量'];AdoTa