如果不能建立dblink,那么就只能导出两行表,通过spool导出就可以。然后通过系统级别的命令去比对。我记得linux是有比较两个文件不同行的功能的。
如果认为两个都导出比较麻烦,那就导出一个,在导入另外一个库(注意变换名字,否则表明重复就麻烦了),然后再对比。
构建两个临时表,将两个数据库结构信息导入。create Table #t1
(
ID Int Identity(1,1) Not Null Primary Key,
tablename nvarchar(50) NULL,
columnName nvarchar(50) NULL,
columnIndex int null,
columnType nvarchar(50) NULL
)
use 数据库1
insert into #t1
create Table #t2
(
ID Int Identity(1,1) Not Null Primary Key,
tablename nvarchar(50) NULL,
columnName nvarchar(50) NULL,
columnIndex int null,
columnType nvarchar(50) NULL
)
//开始比较
use 数据库2
insert into #t2
SELECT
SO.name as '表名',
SC.name as '表列名',
SC.colid as '索引',
ST.name as '类型'
FROM
sysobjects SO, -- 对象表
syscolumns SC, -- 列名表
systypes ST -- 数据类型表
WHERE
SO.id = SC.id
AND SO.xtype = 'U'-- 类型U表示表,V表示视图
AND SO.status >= 0 --加一个条件:SO.status >= 0,否则会将系统的临时表显示出来
AND SC.xtype = ST.xusertype
ORDER BY
SO.name, SC.colorder
go
//查询出 在t1 里有, t2 里没有的字段,查询列出来。
select * from
(
select tablename,columnName,columnType from #t1 where tablename like '%EMS_%'
EXCEPT
select tablename,columnName,columnType from #t2 where tablename like '%EMS_%'
) as c
order by tablename
比较两个数据库中表和字段的差异
-- 比较两个数据库中表的差异
-- u表,p存储过程,v视图
-- INTFSIMSNEW新库,INTFSIMS旧库
SELECT NTABLE = A.NAME, OTABLE = B.NAME
FROM INTFSIMSNEW..SYSOBJECTS A
LEFT JOIN INTFSIMS..SYSOBJECTS B
ON A.NAME = B.NAME
WHERE ISNULL(B.NAME, '') = ''
AND A.XTYPE = 'U'
UNION ALL
SELECT NTABLE = B.NAME, OTABLE = A.NAME
FROM INTFSIMS..SYSOBJECTS A
LEFT JOIN INTFSIMSNEW..SYSOBJECTS B
ON A.NAME = B.NAME
WHERE ISNULL(B.NAME, '') = ''
AND A.XTYPE = 'U'
ORDER BY 1, 2
-- 比较两个数据库中每个表字段的差异
SELECT
表名A = CASE WHEN ISNULL(A.TABLENAME, '') <>'' THEN A.TABLENAME ELSE B.TABLENAME END,
字段名A = A.FIELDNAME,
字段名B = B.FIELDNAME,
顺序= A.FIELDSNO,
说明= CASE WHEN A.FIELDTYPE <>B.FIELDTYPE THEN '类型: ' + A.FIELDTYPE + '-->' + B.FIELDTYPE
WHEN A.FIELDSNO <>B.FIELDSNO THEN '顺序: ' + str(A.FIELDSNO) + '-->' + str(B.FIELDSNO)
WHEN A.LENGTH <>B.LENGTH THEN '长度: ' + str(A.LENGTH) + '-->' + str(B.LENGTH)
WHEN A.LENSEC <>B.LENSEC THEN '小数位: ' + str(A.LENSEC) + '-->' + str(B.LENSEC)
WHEN A.ALLOWNULL <>B.ALLOWNULL THEN '允许空值: ' + str(A.ALLOWNULL) + '-->' + str(B.ALLOWNULL)
END
FROM (SELECT
TABLENAME = B.NAME,
FIELDNAME = A.NAME,
FIELDSNO = A.COLID,
FIELDTYPE = C.NAME,
LENGTH = A.LENGTH,
LENSEC = A.XSCALE,
ALLOWNULL = A.ISNULLABLE
FROM INTFSIMSNEW..SYSCOLUMNS A
LEFT JOIN INTFSIMSNEW..SYSOBJECTS B
ON A.ID = B.ID
LEFT JOIN INTFSIMSNEW..SYSTYPES C
ON A.XUSERTYPE = C.XUSERTYPE
WHERE B.XTYPE = 'U') A
FULL JOIN (SELECT
TABLENAME = B.NAME,
FIELDNAME = A.NAME,
FIELDSNO = A.COLID,
FIELDTYPE = C.NAME,
LENGTH = A.LENGTH,
LENSEC = A.XSCALE,
ALLOWNULL = A.ISNULLABLE
FROM INTFSIMS..SYSCOLUMNS A
LEFT JOIN INTFSIMS..SYSOBJECTS B
ON A.ID = B.ID
LEFT JOIN INTFSIMS..SYSTYPES C
ON A.XUSERTYPE = C.XUSERTYPE
WHERE B.XTYPE = 'U') B
ON A.TABLENAME = B.TABLENAME
AND A.FIELDNAME = B.FIELDNAME
WHERE ISNULL(A.TABLENAME, '') = ''
OR ISNULL(B.TABLENAME, '') = ''
OR A.FIELDTYPE <>B.FIELDTYPE
OR A.FIELDSNO <>B.FIELDSNO
OR A.LENGTH <>B.LENGTH
OR A.LENSEC <>B.LENSEC
OR A.ALLOWNULL <>B.ALLOWNULL
ORDER by 1, 4
一组数字怎么和数据库都数字对比:在button里加上连接数据库,用SQL语句把textbox的值传过去(当然首先要判断textbox是不是空),得到返回值,进行以后的 *** 作。 SqlConnection Miss =new SqlConnection("server=服务器地址database=数据库名uid=服务器名pwd=服务器密码")。数据库是“按照数据结构来组织、存储和管理数据的仓库”。是一个长期存储在计算机内的、有组织的、可共享的、统一管理的大量数据的集合。
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