c# - 如何使用c#代码检查sql server中是否存在存储过程

Question

我试过下面的代码来检查 SP 是否已经存在。如果不存在，我正在创建..

但是每次都显示sp is not created.....但是我的数据库已经有了这个sp。

让我知道我哪里做错了。

string checkSP = String.Format(
  "IF OBJECT_ID('{0}', 'U') IS NOT NULL SELECT 'true' ELSE SELECT 'false'", 
  "GP_SOP_AdjustTax");

SqlCommand command = new SqlCommand(checkSP, myConnection);
command.CommandType = CommandType.Text;

if (myConnection == null || myConnection.State == ConnectionState.Closed)
{
    try
    {
        myConnection.Open();
    }
    catch (Exception a)
    {
        MessageBox.Show("Error " + a.Message);
    }
}

bool Exist = false;
Exist = Convert.ToBoolean(command.ExecuteScalar());
if (Exist == false)   //false : SP does not exist
{ 
    // here i am writing code for creating SP
}

Answer 1

尝试:

if exists(select * from sys.objects where type = 'p' and name = '<procedure name>' )

您也可以使用 C# 检查:

string connString = "";
string query = "select * from sysobjects where type='P' and name='MyStoredProcedureName'";
bool spExists = false;
using (SqlConnection conn = new SqlConnection(connString))
{
    conn.Open();
    using (SqlCommand command = new SqlCommand(query, conn))
    {
        using (SqlDataReader reader = command.ExecuteReader())
        {
            while (reader.Read())
            {
                spExists = true;
                break;
            }
        }
    }
}