SQL Server新库和旧库数据字典的比较

declare @i int

set @i=4
 

/*3:1是需要得到新库增加的数据字典信息。

2是需要得到旧库多出的数据字典信息。

3是需要得到新库增加的表的数据字典信息。

4是需要得到旧库多出的表的数据字典信息*/

use temp  --打开旧库
SELECT sysobjects.name AS [table], CASE WHEN CAST
(sysproperties.[value] AS varchar)
IS NULL THEN '' ELSE CAST(sysproperties.[value] AS varchar)
END AS 表说明,
syscolumns.name AS field, CASE WHEN CAST(properties.
[value] AS varchar) IS NULL
THEN '' ELSE CAST(properties.[value] AS varchar) END AS 字段说明,
systypes.name AS type, syscolumns.length,
ISNULL(COLUMNPROPERTY(syscolumns.id, syscolumns.name, 'Scale'), 0)
AS 小数位数, syscolumns.isnullable AS isnull,
CASE WHEN syscomments.text IS NULL
THEN '' ELSE syscomments.text END AS [Default],
CASE WHEN COLUMNPROPERTY(syscolumns.id, syscolumns.name, 'IsIdentity')
= 1 THEN '√' ELSE '' END AS 标识, CASE WHEN EXISTS
(SELECT 1
FROM sysobjects
WHERE xtype = 'PK' AND name IN
(SELECT name
FROM sysindexes
WHERE indid IN
(SELECT indid
FROM sysindexkeys
WHERE id = syscolumns.id AND colid = syscolumns.colid)))
THEN '√' ELSE '' END AS 主键 into #old
FROM syscolumns INNER JOIN
sysobjects ON sysobjects.id = syscolumns.id INNER JOIN
systypes ON syscolumns.xtype = systypes.xtype LEFT OUTER JOIN
sysproperties properties ON syscolumns.id = properties.id AND
syscolumns.colid = properties.smallid LEFT OUTER JOIN
sysproperties ON sysobjects.id = sysproperties.id AND
sysproperties.smallid = 0 LEFT OUTER JOIN
syscomments ON syscolumns.cdefault = syscomments.id
WHERE (sysobjects.xtype = 'U')

use accdb --打开新库
SELECT sysobjects.name AS [table], CASE WHEN CAST(sysproperties.
[value] AS varchar)
IS NULL THEN '' ELSE CAST(sysproperties.[value] AS varchar)
END AS 表说明,
syscolumns.name AS field, CASE WHEN CAST(properties.[value]
AS varchar) IS NULL
THEN '' ELSE CAST(properties.[value] AS varchar) END AS 字段说明,
systypes.name AS type, syscolumns.length,
ISNULL(COLUMNPROPERTY(syscolumns.id, syscolumns.name, 'Scale'), 0)
AS 小数位数, syscolumns.isnullable AS isnull,
CASE WHEN syscomments.text IS NULL
THEN '' ELSE syscomments.text END AS [Default],
CASE WHEN COLUMNPROPERTY(syscolumns.id, syscolumns.name,
'IsIdentity')
= 1 THEN '√' ELSE '' END AS 标识, CASE WHEN EXISTS
(SELECT 1
FROM sysobjects
WHERE xtype = 'PK' AND name IN
(SELECT name
FROM sysindexes
WHERE indid IN
(SELECT indid
FROM sysindexkeys
WHERE id = syscolumns.id AND colid = syscolumns.colid)))
THEN '√' ELSE '' END AS 主键 into #new
FROM syscolumns INNER JOIN
sysobjects ON sysobjects.id = syscolumns.id INNER JOIN
systypes ON syscolumns.xtype = systypes.xtype LEFT OUTER JOIN
sysproperties properties ON syscolumns.id = properties.id AND
syscolumns.colid = properties.smallid LEFT OUTER JOIN
sysproperties ON sysobjects.id = sysproperties.id AND
sysproperties.smallid = 0 LEFT OUTER JOIN
syscomments ON syscolumns.cdefault = syscomments.id
WHERE (sysobjects.xtype = 'U') 

if @i=1
begin
select n.* --新库与旧库相比较后新库增加的数据字典信息
from #new n left join #old o on n.[table]=o.[table]
and n.field=o.field where o.[table] is null
or o.field is null order by n.[table],n.field
end
else
begin
if @i=2
begin
select o.* --新库与旧库相比较后旧库多出的数据字典信息
from #new n right join #old o on n.[table]=o.[table]
and n.field=o.field where n.[table] is null
or n.field is null order by o.[table],o.field
end
else
begin
if @i=3
begin
select * --新库与旧库相比较后新库增加的表的数据字典信息
from #new where [table] <> all(select [table] from #old )
order by [table],field
end
else
begin
if @i=4
begin
select * --新库与旧库相比较后旧库多出的表的数据字典信息
from #old where [table] <> all(select [table] from #new )
order by [table],field
end
else
begin
select '出错啦'
end    
end    
end   
end

drop table #old
drop table #new