Question

//我给出的查询看起来像

//插入tablename（主机，实例）值（@SA_CONSOLE_HOSTNAME，value），在表名中我创建了列host和instance，其中host是我的本地机器名。每次代码在不同的系统中运行时，我都不想输入机器名称所以为它创建了一个变量和分配的机器名称，

//我创建了一个存根并将机器名传递给它

String scriptAndStub;

scriptAndStub =
    "DECLARE @SA_CONSOLE_HOSTNAME VARCHAR(256)\n" + \\ creating a variable 
    "SET @SA_CONSOLE_HOSTNAME = @HOSTNAME@\n";
scriptAndStub += script;

executeScript.CommandText = scriptAndStub;
executeScript.Parameters.AddWithValue("@HOSTNAME@", Environment.MachineName); \\passing machine name

//当我单击文本框上的检查语法按钮时，它会生成错误

private void btnSyntaxCheck_Click(object sender, EventArgs e)
        {
            try
            {
                tsStatus.Text = "Checking Syntax...";
                LogMessage(DA_Base.Constants.ERROR_LEVEL_DEBUG, "SQLScripting::SyntaxCheck", "Query: " + rtbScript.Text);
                using (SqlCommand myCommand = new SqlCommand(string.Empty, Connection))
                {
                   foreach (string script in Regex.Split(rtbScript.Text, "^GO\r?$", RegexOptions.Multiline | RegexOptions.IgnoreCase))
                      {
                           if (!String.IsNullOrEmpty(script))
                           {
                             myCommand.CommandText = "SET PARSEONLY ON\n" + script;
                             myCommand.ExecuteNonQuery();
                            }
                       }
                 }
                 tsStatus.Text = "Checking Syntax Complete. No errors reported.";
             }
             catch (Exception exc)  \\error has been caught here....
             {
                tsStatus.Text = exc.Message;
                MessageBox.Show(exc.Message, "SQL Syntax Check");
             }
         }
   }
}

Answer 1

FIXED IT BY DECLARING IT IN THE MAIN FUNCTION AND CLEARING THE @HOSTNAME@..WORKS FINE..


String scriptAndStub;

scriptAndStub =
    "DECLARE @SA_CONSOLE_HOSTNAME VARCHAR(256)\n" + \\ creating a variable 
    "SET @SA_CONSOLE_HOSTNAME = @HOSTNAME@\n";
     executescript.parameters.clear();
scriptAndStub += script;

executeScript.CommandText = scriptAndStub;
executeScript.Parameters.AddWithValue("@HOSTNAME@", Environment.MachineName); \\passing machine name

//当我单击文本框上的检查语法按钮时，它会生成错误

private void btnSyntaxCheck_Click(object sender, EventArgs e)
        {
            try
            {
                tsStatus.Text = "Checking Syntax...";
                LogMessage(DA_Base.Constants.ERROR_LEVEL_DEBUG, "SQLScripting::SyntaxCheck", "Query: " + rtbScript.Text);

                 String scriptAndStub; 
                 scriptAndStub = "DECLARE @SA_CONSOLE_HOSTNAME VARCHAR(256)\n";

                using (SqlCommand myCommand = new SqlCommand(string.Empty, Connection))
                {
                   foreach (string script in Regex.Split(rtbScript.Text, "^GO\r?$", RegexOptions.Multiline | RegexOptions.IgnoreCase))
                      {
                           if (!String.IsNullOrEmpty(script))
                           {
                             myCommand.CommandText = "SET PARSEONLY ON\n" + script;
                             myCommand.ExecuteNonQuery();
                            }
                       }
                 }
                 tsStatus.Text = "Checking Syntax Complete. No errors reported.";
             }
             catch (Exception exc)  \\error has been caught here....
             {
                tsStatus.Text = exc.Message;
                MessageBox.Show(exc.Message, "SQL Syntax Check");
             }
         }
   }
}

声明标量变量@@ SA_CONSOLE_HOSTNAME

1 个答案: