if not exists 
	(Select 
		* 
	 from sysobjects SO 
		join syscolumns sc on sc.id = so.id 
	 where so.name = @TableName and sc.Name = @ColumnName
	)

Create procedure _DB_TableColumn_Create
	@TableName varchar( 100 ),
	@ColumnName varchar( 100 ), 
	@DataType varchar( 100 )
as
begin
	Declare @SQLText varchar( 1000 )
	if not exists (Select * from sysobjects so where name = @TableName)
	begin
		Set @SQLText = 'Table [' + @TableName + '] not exists'
		print @SQLText
		return
	end 
               if not exists (Select * from systypes where @DataType like name +'%')
	begin
		Set @SQLText = 'DataType [' + @DataType + '] not exists'
		print @SQLText
		return
	end 


	if exists 
	(Select 
		* 
	 from sysobjects so
		join syscolumns sc on sc.id = so.id 
	 where so.name = @TableName and sc.name = @ColumnName
	)
	begin
		Set @SQLText = 'Columnn by name [' + @ColumnName + '] allready exists in table [' + @TableName + ']'
		print @SQLText
		return
	end

	Set @SQLText = 'Columnn by name [' + @ColumnName + '] add to table [' + @TableName + ']...'	
	print @SQLText
	Set @SQLText = 'alter table ' + @TableName + ' add ' + @ColumnName + ' ' + @DataType + ' Null'
	EXEC (@SQLText)
	print '...Success'
end