How to execute an .SQL script file using c#


Question

I'm sure this question has been answered already, however I was unable to find an answer using the search tool.

Using c# I'd like to run a .sql file. The sql file contains multiple sql statements, some of which are broken over multiple lines. I tried reading in the file and tried executing the file using ODP.NET ... however I don't think ExecuteNonQuery is really designed to do this.

So I tried using sqlplus via spawning a process ... however unless I spawned the process with UseShellExecute set to true sqlplus would hang and never exit. Here's the code that DOESN'T WORK.

Process p = new Process();
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.FileName = "sqlplus";
p.StartInfo.Arguments = string.Format("xx/xx@{0} @{1}", in_database, s);
p.StartInfo.CreateNoWindow = true;

bool started = p.Start();
p.WaitForExit();

WaitForExit never returns .... Unless I set UseShellExecute to true. A side effect of UseShellExecute is that you can no capture the redirected output.

1
120
2/9/2015 3:14:27 PM

Accepted Answer

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Microsoft.SqlServer.Management.Smo;
using Microsoft.SqlServer.Management.Common;
using System.IO;
using System.Data.SqlClient;

public partial class ExcuteScript : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    string sqlConnectionString = @"Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=ccwebgrity;Data Source=SURAJIT\SQLEXPRESS";

    string script = File.ReadAllText(@"E:\Project Docs\MX462-PD\MX756_ModMappings1.sql");

    SqlConnection conn = new SqlConnection(sqlConnectionString);

    Server server = new Server(new ServerConnection(conn));

    server.ConnectionContext.ExecuteNonQuery(script);
    }
}
166
9/9/2014 6:18:44 AM

I tried this solution with Microsoft.SqlServer.Management but it didn't work well with .NET 4.0 so I wrote another solution using .NET libs framework only.

string script = File.ReadAllText(@"E:\someSqlScript.sql");

// split script on GO command
IEnumerable<string> commandStrings = Regex.Split(script, @"^\s*GO\s*$", RegexOptions.Multiline | RegexOptions.IgnoreCase);

Connection.Open();
foreach (string commandString in commandStrings)
{
    if (commandString.Trim() != "")
    {
        using(var command = new SqlCommand(commandString, Connection))
        {
            command.ExecuteNonQuery();
        }
    }
}     
Connection.Close();

Licensed under: CC-BY-SA with attribution
Not affiliated with: Stack Overflow
Icon