复制表结构,获取指定表的创建脚本,包括表和字段的属性、外键等

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软件名称: May Flower Erp
版权所有: (C) 2005-2006 May Flower ERP 开发组
功能描述: 获取指定表的创建脚本,包括表和字段的属性、外键(注释掉的)
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参数列表:
        1: @TableName 需要创建脚本的表的名称
****************************************************************************
|</PRE>*/
CREATE PROCEDURE [dbo].[sp_HelpTable](@TableName sysname)
AS
  SET NOCOUNT ON
  DECLARE @ObjectID int
  DECLARE @TableScript table(Iden int IDENTITY(1, 1), ScriptLine nvarchar(4000))
  SET @ObjectID = object_id(@TableName)
  IF @ObjectID IS NULL OR OBJECTPROPERTY(@ObjectID, 'IsTable') = 0
  BEGIN
    RAISERROR('指定的对象不是表对象', 16, 1)
    RETURN
  END
  --获取表的创建脚本
  --插入表头
  INSERT INTO @TableScript(ScriptLine)
    SELECT N'CREATE TABLE [' + USER_NAME(OBJECTPROPERTY(@ObjectID, N'OwnerId')) + N'].[' + object_name(@ObjectID) + N']('

  --插入字段
  INSERT INTO @TableScript(ScriptLine)
    SELECT N'  [' + a.Name + N'] [' + b.name + N']' +
           CASE WHEN c.Object_id IS NOT NULL THEN N' IDENTITY(' + CONVERT(nvarchar, c.seed_value) + N', ' + CONVERT(nvarchar, c.increment_value) + N')'
                ELSE '' END +
           CASE WHEN b.xusertype IN (167, 175, 231, 239) THEN N'('+CONVERT(nvarchar, a.prec)  + N')'
                WHEN b.xusertype in (106, 108)           THEN N'('+CONVERT(nvarchar, a.xprec) + N', ' + CONVERT(nvarchar, a.xscale) + N')'
                ELSE '' END +
           CASE a.isnullable WHEN 1 THEN N'' ELSE N' NOT' END + N' NULL' +
           CASE WHEN d.Name IS NOT NULL THEN N' DEFAULT ' + d.Definition ELSE N'' END +
           N','
      FROM sys.syscolumns a
        LEFT JOIN sys.systypes b ON a.xusertype = b.xusertype
        LEFT JOIN sys.identity_columns c ON c.Object_id = a.ID AND c.Column_ID = a.ColID
        LEFT JOIN sys.default_constraints d ON d.Parent_Object_ID = a.ID AND d.Parent_column_ID = a.ColID
    WHERE a.[ID] = @ObjectID
    ORDER BY a.ColOrder

  --插入主键和索引
  DECLARE @IndexID int, @IndexScript nvarchar(4000)
  DECLARE IndexCursor CURSOR FOR
    SELECT b.Index_ID, N'  CONSTRAINT [' + a.Name + N'] ' +
           CASE a.Type WHEN 'PK' THEN N'PRIMARY KEY ' WHEN 'UQ' THEN N'UNIQUE ' END +
           CASE b.Type WHEN 1    THEN N'CLUSTERED'   WHEN 2     THEN N'NONCLUSTERED ' END + N'('
      FROM sys.key_constraints a
        LEFT JOIN sys.indexes b ON b.Object_ID = a.Parent_Object_ID AND b.index_id = a.unique_index_id
    WHERE a.Parent_Object_ID = @ObjectID
  OPEN IndexCursor
  FETCH NEXT FROM IndexCursor INTO @IndexID, @IndexScript
  WHILE @@FETCH_STATUS = 0
  BEGIN
    SELECT @IndexScript = @IndexScript + N'[' + INDEX_COL(object_name(@ObjectID), 2 , 1) + N'],'
      FROM sys.index_columns
    WHERE Object_ID = @ObjectID
      AND Index_ID = 2
   
    SET @IndexScript = LEFT(@IndexScript, LEN(@IndexScript) -1) + N'),'
    INSERT INTO @TableScript(ScriptLine) VALUES(@IndexScript)
    FETCH NEXT FROM IndexCursor INTO @IndexID, @IndexScript
  END
  Close IndexCursor
  DEALLOCATE IndexCursor

  insert into @TableScript(ScriptLine) VALUES(')')
  select * from @TableScript



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