Easy way to convert exec sp_executesql to a normal query?

Question

When dealing with debugging queries using Profiler and SSMS, its pretty common for me to copy a query from Profiler and test them in SSMS. Because I use parameterized sql, my q

Answer 1

I spent a little time and created a small modification of Matt Roberts / Wangzq solutions without DECLAREs section, you can try it on .NET Fiddle or download LINQPad 5 file.

Input:

exec sp_executesql N'UPDATE MyTable SET [Field1] = @0, [Field2] = @1',N'@0 nvarchar(max) ,@1 int',@0=N'String',@1=0

Output:

UPDATE MyTable SET [Field1] = N'String', [Field2] = 0

Code:

using System;
using System.Linq;
using System.Text.RegularExpressions;

public class Program
{
    public static void Main()
    {
        var sql = @"exec sp_executesql N'UPDATE MyTable SET [Field1] = @0, [Field2] = @1',N'@0 nvarchar(max) ,@1 int',@0=N'String',@1=0";
        Console.WriteLine(ConvertSql(sql));
    }

    public static string ConvertSql(string origSql)
    {
        var re = new Regex(@"exec*\s*sp_executesql\s+N'([\s\S]*)',\s*N'(@[\s\S]*?)',\s*([\s\S]*)", RegexOptions.IgnoreCase); // 1: the sql, 2: the declare, 3: the setting
        var match = re.Match(origSql);
        if (match.Success)
        {
            var sql = match.Groups[1].Value.Replace("''", "'");
            //var declare = match.Groups[2].Value;
            var setting = match.Groups[3].Value + ',';

            // to deal with comma or single quote in variable values, we can use the variable name to split
            var re2 = new Regex(@"@[^',]*?\s*=");
            var variables = re2.Matches(setting).Cast().Select(m => m.Value).ToArray();
            var values = re2.Split(setting).Where(s=>!string.IsNullOrWhiteSpace(s)).Select(m => m.Trim(',').Trim().Trim(';')).ToArray();

            for (int i = variables.Length-1; i>=0; i--)
            {
                sql = Regex.Replace(sql, "(" + variables[i].Replace("=", "")+")", values[i], RegexOptions.Singleline);
            }
            return sql;     
        }

        return @"Unknown sql query format.";
    }
}