Question

我想为数据库创建整个SQL模式，然后生成它的哈希值。这样我就可以检查回滚脚本是否将架构返回到原始状态。是否有我可以使用的SP或其他一些狡猾的方法？我希望它尽可能快。

Answer 1

如果将表和键与代码和约束分开，则可以轻松地对后者进行散列。

SELECT
    CHECKSUM_AGG(BINARY_CHECKSUM (*))
FROM   
    (SELECT
        definition 
    FROM
        sys.default_constraints
    UNION ALL
    SELECT
        definition 
    FROM
        sys.sql_modules
    UNION ALL
    SELECT
        definition 
    FROM
        sys.check_constraints
    ) foo

Answer 2

以下内容应该有效：

        Microsoft.SqlServer.Management.Smo.Server srv = new Microsoft.SqlServer.Management.Smo.Server("Server");

        Microsoft.SqlServer.Management.Smo.Database db = srv.Databases["DB_Name"];

        // Set scripting options as needed using a ScriptingOptions object.
        Microsoft.SqlServer.Management.Smo.ScriptingOptions so = new ScriptingOptions();
        so.AllowSystemObjects = false;
        so.ScriptDrops = false;
        so.Indexes = true;
        so.ClusteredIndexes = true;
        so.PrimaryObject = true;
        so.SchemaQualify = true;
        so.IncludeIfNotExists = false;
        so.Triggers = true;

        System.Collections.Specialized.StringCollection sc = new System.Collections.Specialized.StringCollection();
        StringBuilder sb = new StringBuilder();

        foreach (Table item in db.Tables)
            if (!item.IsSystemObject)
            {
                sc = item.Script(so);
                foreach (string s in sc)
                    sb.Append(s);
            }

        foreach (StoredProcedure item in db.StoredProcedures)
            if (!item.IsSystemObject)
                if (!item.IsSystemObject)
                {
                    sc = item.Script(so);
                    foreach (string s in sc)
                        sb.Append(s);
                }

        foreach (UserDefinedFunction item in db.UserDefinedFunctions)
            if (!item.IsSystemObject)
                if (!item.IsSystemObject)
                {
                    sc = item.Script(so);
                    foreach (string s in sc)
                        sb.Append(s);
                }

        foreach (Trigger item in db.Triggers)
            if (!item.IsSystemObject)
                if (!item.IsSystemObject)
                {
                    sc = item.Script(so);
                    foreach (string s in sc)
                        sb.Append(s);
                }


        //sb.GetHashCode();
        // For a better hash do this.
        System.Security.Cryptography.MD5CryptoServiceProvider hashProvider = new System.Security.Cryptography.MD5CryptoServiceProvider();

        byte[] hashData = hashProvider.ComputeHash(ASCIIEncoding.ASCII.GetBytes(sb.ToString()));

Answer 3

我编写了一个名为SMOscript的工具，它使用SMO库调用来编写数据库中所有对象的脚本。您可以使用它来创建单个.sql文件，并找到另一个工具来计算结果文件的哈希值。（例如随机谷歌提出this）

脚本生成SQL Server数据库架构用于散列的最快方法

3 个答案: