我尝试使用以下代码删除表中的行,但是我收到了错误。
{System.Data.OleDb.OleDbException: Missing ), ], or Item in query expression
'[CompanyID] not in (Select [CompanyID] from EmployeeDetails
where [CompanyID] = @cmpID'.
这是我的代码:
int companyID = _cmpDetailsList[i].CompanyID;
OleDbCommand upcmd = new OleDbCommand(
"delete * from CompanyDetails where [CompanyID] not in " +
"(Select [CompanyID] from EmployeeDetails where [CompanyID] = @cmpID", conn);
conn.Open();
upcmd.Parameters.AddWithValue("@cmpID", companyID);
upcmd.ExecuteNonQuery();
conn.Close();
我以这种格式修改了命令
OleDbCommand upcmd = new OleDbCommand("delete * from CompanyDetails where [CompanyID]= @cmpID and not in (Select [CompanyID] from EmployeeDetails where [CompanyID] = @cmpID)", conn);
我收到以下错误
System.Data.OleDb.OleDbException:查询表达式'[CompanyID] = @cmpID中的语法错误(缺少运算符),而不是(从EmployeeDetails中选择[CompanyID],其中[CompanyID] = @cmpID)'。
请解决它
答案 0 :(得分:10)
如果您阅读错误,它会告诉您问题:
OleDbCommand upcmd = new OleDbCommand(
"delete from CompanyDetails where [CompanyID] not in " +
"(Select [CompanyID] from EmployeeDetails where [CompanyID] = @cmpID)", conn);
您最后有一个(
但没有匹配)
。