对于不同的输入,是否可以编写不同的SQL Transact查询?SELECT Entries.Date AS Date, Entries.Enter AS Enter,FROM Entries ON (Entries.UserID = Users.Id)如果没有提供@UserName,我想删除最后一行。
= new SqlConnection("connection string which includes MultipleActiveResultSets=True") using (SqlCommandsqlCmd1 = new SqlCommand("SELECT * FROM MyTable WHERE ProcessedRslt IS NULL", sqlCon)
我尝试使用带参数的SqlCommand更改表中某一列的数据类型,但不起作用。connectionStringName) SqlConnection con = CreateSqlConnectionStr(connectionStringName); foreach(string dictKey in dict.Keys)
{我通常使用带有select、insert语句参数的<e