当前位置：首页 > 系统运维 > 正文内容

SQL Server数据字典的HTML格式

a8116255316年前 (2010-07-14)系统运维10

以下的文章主要是介绍SQL Server数据字典的HTML格式，SQL Server数据字典的HTML格在实际中的应用比例还是占为多数的，假如你对这一技术，心存好奇的话，以下的文章将会揭开它的神秘面纱。

运行下面的脚本来生成数据字典，并保存结果到一个扩展名为“.htm”的文件中。

生成数据字典的示例T-SQL脚本

Set nocount on DECLARE @TableName nvarchar(35) DECLARE Tbls CURSOR FOR Select distinct Table_name FROM INFORMATION_SCHEMA.COLUMNS --put any exclusions here --where table_name not like '%old' order by Table_name OPEN Tbls PRINT '<HTML><body>' FETCH NEXT FROM Tbls INTO @TableName WHILE @@FETCH_STATUS = 0 BEGIN PRINT '' PRINT '<table border="1">' Print '' + @TableName + '' PRINT '' --Get the Description of the table --Characters 1-250 Select substring(cast(Value as varchar(1000)),1,250) FROM sys.extended_properties A WHERE A.major_id = OBJECT_ID(@TableName) and name = 'MS_Description' and minor_id = 0 --Characters 251-500 Select substring(cast(Value as varchar(1000)),251, 250) FROM sys.extended_properties A WHERE A.major_id = OBJECT_ID(@TableName) and name = 'MS_Description' and minor_id = 0 PRINT '<tr>' --Set up the Column Headers for the Table PRINT '<td>Column Name</td>' PRINT '<td>Description</td>' PRINT '<td>InPrimaryKey</td>' PRINT '<td>IsForeignKey</td>' PRINT '<td>DataType</td>' PRINT '<td>Length</td>' PRINT '<td>Numeric Precision</td>' PRINT '<td>Numeric Scale</td>' PRINT '<td>Nullable</td>' PRINT '<td>Computed</td>' PRINT '<td>Identity</td>' PRINT '<td>Default Value</td>' --Get the Table Data SELECT '</tr>', '<tr>', '<td>' + CAST(clmns.name AS VARCHAR(35)) + '</td>', '<td>' + substring(ISNULL(CAST(exprop.value AS VARCHAR(255)),''),1,250), substring(ISNULL(CAST(exprop.value AS VARCHAR(500)),''),251,250) + '</td>', '<td>' + CAST(ISNULL(idxcol.index_column_id, 0)AS VARCHAR(20)) + '</td>', '<td>' + CAST(ISNULL( (SELECT TOP 1 1 FROM sys.foreign_key_columns AS fkclmn WHERE fkclmn.parent_column_id = clmns.column_id AND fkclmn.parent_object_id = clmns.object_id ), 0) AS VARCHAR(20)) + '</td>', '<td>' + CAST(udt.name AS CHAR(15)) + '</td>' , '<td>' + CAST(CAST(CASE WHEN typ.name IN (N'nchar', N'nvarchar') AND clmns.max_length <> -1 THEN clmns.max_length/2 ELSE clmns.max_length END AS INT) AS VARCHAR(20)) + '</td>', '<td>' + CAST(CAST(clmns.precision AS INT) AS VARCHAR(20)) + '</td>', '<td>' + CAST(CAST(clmns.scale AS INT) AS VARCHAR(20)) + '</td>', '<td>' + CAST(clmns.is_nullable AS VARCHAR(20)) + '</td>' , '<td>' + CAST(clmns.is_computed AS VARCHAR(20)) + '</td>' , '<td>' + CAST(clmns.is_identity AS VARCHAR(20)) + '</td>' , '<td>' + isnull(CAST(cnstr.definition AS VARCHAR(20)),'') + '</td>' FROM sys.tables AS tbl INNER JOIN sys.all_columns AS clmns ON clmns.object_id=tbl.object_id LEFT OUTER JOIN sys.indexes AS idx ON idx.object_id = clmns.object_id AND 1 =idx.is_primary_key LEFT OUTER JOIN sys.index_columns AS idxcol ON idxidxcol.index_id = idx.index_id AND idxcol.column_id = clmns.column_id AND idxcol.object_id = clmns.object_id AND 0 = idxcol.is_included_column LEFT OUTER JOIN sys.types AS udt ON udt.user_type_id = clmns.user_type_id LEFT OUTER JOIN sys.types AS typ ON typ.user_type_id = clmns.system_type_id AND typtyp.user_type_id = typ.system_type_id LEFT JOIN sys.default_constraints AS cnstr ON cnstr.object_id=clmns.default_object_id LEFT OUTER JOIN sys.extended_properties exprop ON exprop.major_id = clmns.object_id AND exprop.minor_id = clmns.column_id AND exprop.name = 'MS_Description' WHERE (tbl.name = @TableName and exprop.class = 1) --I don't wand to include comments on indexes ORDER BY clmns.column_id ASC PRINT '</tr></table>' FETCH NEXT FROM Tbls INTO @TableName END PRINT '</body></HTML>' CLOSE Tbls DEALLOCATE Tbls