如何将大型SQL脚本分批解析？

Question

我有一个非常大的sql文件,我想分成批处理执行.我想确保我以与SSMS和SQLCMD相同的方式解析它.

微软有一个很棒的混合模式程序集,名为Microsoft.SqlServer.BatchParser,它有一个名为Parser的类,它可以像它一样接缝.

它希望在调用Parse()之前将IBatchSource的实现作为SetBatchSource的参数.

我在哪里可以找到IBatchSource的实现,以及有关如何使用此功能的更多信息？

Answer 1

我在GAC中找到了程序集Microsoft.SqlServer.BatchParser以及它的朋友Microsoft.SqlServer.BatchParserClient,它包含IBatchSource接口的实现.

namespace Microsoft.SqlServer.Management.Common
{
  internal class BatchSourceFile : IBatchSource
  internal class BatchSourceString : IBatchSource
}

然后发生以下对话.

大会:您好!我的名字是 Microsoft.SqlServer.Management.Common.ExecuteBatch.你想要StringCollection GetStatements(string sqlCommand)吗？

我:是的,我会,BatchParserClient汇编.谢谢你的询问!

可重复的指示(在家试试!)

• 安装Microsoft SQL Server 2008 R2共享管理对象
• 将Microsoft.SqlServer.BatchParser.dll和Microsoft.SqlServer.BatchParserClient.dll从GAC复制到解决方案中的文件夹.
• 引用Microsoft.SqlServer.BatchParser和Microsoft.SqlServer.BatchParserClient

Program.cs中

using System;
using System.Collections.Specialized;
using System.IO;
using System.Text;
using Microsoft.SqlServer.Management.Common;

namespace ScriptParser
{
   class Program
   {
      static void Main(string[] args)
      {
         ExecuteBatch batcher = new ExecuteBatch();
         string text = File.ReadAllText(@"Path_To_My_Long_Sql_File.sql");
         StringCollection statements = batcher.GetStatements(text);
         foreach (string statement in statements)
         {
            Console.WriteLine(statement);
         }
      }
   }
}

App.Config中

<?xml version="1.0"?>
<configuration>
   <startup useLegacyV2RuntimeActivationPolicy="true">
      <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5"/>
   </startup>
</configuration>

另一种选择是使用本答案中描述的ScriptDom:https://stackoverflow.com/a/32529415/26877 .

using System;
using System.Collections.Generic;
using System.IO;
using Microsoft.SqlServer.TransactSql.ScriptDom;

namespace ScriptDomDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            TSql120Parser parser = new TSql120Parser(false);
            IList<ParseError> errors;
            using (StringReader sr = new StringReader(@"create table t1 (c1 int primary key)
GO
create table t2 (c1 int primary key)"))
            {
                TSqlFragment fragment = parser.Parse(sr, out errors);
                IEnumerable<string> batches = GetBatches(fragment);
                foreach (var batch in batches)
                {
                    Console.WriteLine(batch);
                }
            }
        }

        private static IEnumerable<string> GetBatches(TSqlFragment fragment)
        {
            Sql120ScriptGenerator sg = new Sql120ScriptGenerator();
            TSqlScript script = fragment as TSqlScript;
            if (script != null)
            {
                foreach (var batch in script.Batches)
                {
                    yield return ScriptFragment(sg, batch);
                }
            }
            else
            {
                // TSqlFragment is a TSqlBatch or a TSqlStatement
                yield return ScriptFragment(sg, fragment);
            }
        }

        private static string ScriptFragment(SqlScriptGenerator sg, TSqlFragment fragment)
        {
            string resultString;
            sg.GenerateScript(fragment, out resultString);
            return resultString;
        }
    }
}