SQL Server的命令行或库“比较表”实用程序，具有全面的diff输出到.Net
中的文件我找不到那样的东西。商业版或免费版（XSQL Lite适合我的情况）和工具显示网格中的差异，可以导出为CSV。从命令行运行时，它们也会生成同步SQL脚本。我需要的是一个输出作为一个综合报告（XML，HTML）适合解析，以便我能够在我的应用程序中显示类似的差异网格（更新每列的旧/新值，添加 - 行的所有值，删除 - 行等的所有值...）。
答案 0 :(得分：1)
由于听起来你只想在你的应用程序中显示差异，只需编写自己的查询，这并不难，这是一个例子：
DECLARE @TableA table (RowID int, Col1 int, Col2 varchar(5), Col3 datetime)
DECLARE @TableB table (RowID int, Col1 int, Col2 varchar(5), Col3 datetime)
set nocount on
INSERT @TableA VALUES( 1,111,'AAA','1/1/2010')
INSERT @TableA VALUES( 2,222,'BBB','1/1/2010')
INSERT @TableA VALUES( 3,333,'CCC','1/1/2010')
INSERT @TableA VALUES( 4,444,'DDD','1/1/2010')
INSERT @TableA VALUES( 5,555,'EEE','1/1/2010')
INSERT @TableA VALUES( 6,666,'FFF','1/1/2010')
INSERT @TableA VALUES( 7,777,'GGG','1/1/2010')
INSERT @TableA VALUES( 9,888,'HHH','1/1/2010')
INSERT @TableA VALUES(10,111,'III','1/1/2010')
INSERT @TableB VALUES( 1,111,'AAA','1/1/2010')
INSERT @TableB VALUES( 3,333,'CCC','1/1/2010')
INSERT @TableB VALUES( 4,444,'DD' ,'1/1/2010')
INSERT @TableB VALUES( 5,555,'EEE','2/2/2010')
INSERT @TableB VALUES( 6,666,'FFF','1/1/2010')
INSERT @TableB VALUES( 7,777,'GGG','1/1/2010')
INSERT @TableB VALUES( 8,888,'ZZZ','1/1/2010')
INSERT @TableB VALUES( 9,888,'HHH','1/1/2010')
INSERT @TableB VALUES(10,111,'III','1/1/2010')
set nocount off
SELECT
a.RowID, CASE WHEN b.RowID IS NULL THEN 'A' ELSE '' END AS RowsOnlyExistsIn
,a.Col1,b.Col1, CASE WHEN a.Col1=b.Col1 OR (COALESCE(a.Col1,b.Col1) IS NULL) THEN 'N' ELSE 'Y' END AS Col1Diff
,a.Col2,b.Col2, CASE WHEN a.Col2=b.Col2 OR (COALESCE(a.Col2,b.Col2) IS NULL) THEN 'N' ELSE 'Y' END AS Col2Diff
,a.Col3,b.Col3, CASE WHEN a.Col3=b.Col3 OR (COALESCE(a.Col3,b.Col3) IS NULL) THEN 'N' ELSE 'Y' END AS Col3Diff
FROM @TableA a
LEFT OUTER JOIN @TableB b On a.RowID=b.RowID
UNION ALL
SELECT
b.RowID, 'B' AS RowsOnlyExistsIn
,null,b.Col1, 'Y' AS Col1Diff
,null,b.Col2, 'Y' AS Col2Diff
,null,b.Col3, 'Y' AS Col3Diff
FROM @TableB b
WHERE b.RowID NOT IN (SELECT RowID FROM @TableA)
ORDER BY 1
输出：
RowID RowsOnlyExistsIn Col1 Col1 Col1Diff Col2 Col2 Col2Diff Col3 Col3 Col3Diff
----------- ---------------- ----------- ----------- -------- ----- ----- -------- ----------------------- ----------------------- --------
1 111 111 N AAA AAA N 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
2 A 222 NULL Y BBB NULL Y 2010-01-01 00:00:00.000 NULL Y
3 333 333 N CCC CCC N 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
4 444 444 N DDD DD Y 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
5 555 555 N EEE EEE N 2010-01-01 00:00:00.000 2010-02-02 00:00:00.000 Y
6 666 666 N FFF FFF N 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
7 777 777 N GGG GGG N 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
8 B NULL 888 Y NULL ZZZ Y NULL 2010-01-01 00:00:00.000 Y
9 888 888 N HHH HHH N 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
10 111 111 N III III N 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
(10 row(s) affected)
当然你需要动态生成它，这样才能比较任何两个表。此查询将为您提供任何表的列：
SELECT
*
FROM INFORMATION_SCHEMA.COLUMNS
WHERE
TABLE_CATALOG ='database'
AND TABLE_SCHEMA='dbo'
AND TABLE_NAME ='yourtable'
ORDER BY ORDINAL_POSITION
这是一个快速动态的sql版本（我试图引入所有PK列并使用它们动态加入表，但我只在具有1个PK列的表上测试它）：
设置动态sql
CREATE TABLE TableA (RowID int primary key, Col1 int, Col2 varchar(5), Col3 datetime)
CREATE TABLE TableB (RowID int primary key, Col1 int, Col2 varchar(5), Col3 datetime)
set nocount on
INSERT TableA VALUES( 1,111,'AAA','1/1/2010')
INSERT TableA VALUES( 2,222,'BBB','1/1/2010')
INSERT TableA VALUES( 3,333,'CCC','1/1/2010')
INSERT TableA VALUES( 4,444,'DDD','1/1/2010')
INSERT TableA VALUES( 5,555,'EEE','1/1/2010')
INSERT TableA VALUES( 6,666,'FFF','1/1/2010')
INSERT TableA VALUES( 7,777,'GGG','1/1/2010')
INSERT TableA VALUES( 9,888,'HHH','1/1/2010')
INSERT TableA VALUES(10,111,'III','1/1/2010')
INSERT TableB VALUES( 1,111,'AAA','1/1/2010')
INSERT TableB VALUES( 3,333,'CCC','1/1/2010')
INSERT TableB VALUES( 4,444,'DD' ,'1/1/2010')
INSERT TableB VALUES( 5,555,'EEE','2/2/2010')
INSERT TableB VALUES( 6,666,'FFF','1/1/2010')
INSERT TableB VALUES( 7,777,'GGG','1/1/2010')
INSERT TableB VALUES( 8,888,'ZZZ','1/1/2010')
INSERT TableB VALUES( 9,888,'HHH','1/1/2010')
INSERT TableB VALUES(10,111,'III','1/1/2010')
set nocount off
动态sql
DECLARE @TableA sysname
,@TableB sysname
,@SQLa varchar(max)
,@SQLb varchar(max)
,@SQL varchar(max)
SELECT @TableA='TableA'
,@TableB='TableB'
,@SQLa=NULL
,@SQLb=NULL
DECLARE @PKs table (RowID int identity(1,1) primary key, PkColumn sysname)
DECLARE @index_id int
,@PK sysname
,@i int
SELECT @index_id=index_id from sys.indexes where object_id=OBJECT_ID(@TableA) AND is_primary_key=1
SELECT @PK=''
,@i=0
while (@PK is not null)
BEGIN
SET @i=@i+1
SELECT @PK = index_col(@TableA, @index_id, @i)
IF @PK IS NULL BREAK
INSERT INTO @PKs (PkColumn) VALUES (@PK)
END
SELECT @SQLa=''
,@SQLb=''''+@TableB+''' '
SELECT
@SQLa=@SQLa+' ,a.'+COLUMN_NAME+',b.'+COLUMN_NAME+', CASE WHEN a.'+COLUMN_NAME+'=b.'+COLUMN_NAME+' OR (COALESCE(a.'+COLUMN_NAME+',b.'+COLUMN_NAME+') IS NULL) THEN ''N'' ELSE ''Y'' END AS '+COLUMN_NAME+'Diff '
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME =@TableA
ORDER BY ORDINAL_POSITION
SELECT
@SQLb=@SQLb+' ,null,b.'+COLUMN_NAME+', ''Y'' AS '+COLUMN_NAME+'Diff'
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME =@TableA
ORDER BY ORDINAL_POSITION
SET @SQL='SELECT CASE WHEN b.'+(SELECT PkColumn FROM @PKs WHERE RowID=1)+' IS NULL THEN '''+@TableA+''' ELSE '''' END AS RowsOnlyExistsIn '
+@SQLa
+'FROM '+@TableA+' a LEFT OUTER JOIN '+@TableB+' b ON '
SELECT
@SQL=@SQL+ CASE WHEN RowID!=1 THEN 'AND ' ELSE '' END +'a.'+PkColumn+'=b.'+PkColumn+' '
FROM @PKs
SET @SQL=@SQL+' UNION ALL SELECT '
+@SQLb
+' FROM '+@TableB+' b LEFT OUTER JOIN '+@TableA+' A ON '
SELECT
@SQL=@SQL+ CASE WHEN RowID!=1 THEN 'AND ' ELSE '' END +'b.'+PkColumn+'=a.'+PkColumn+' '
FROM @PKs
SET @SQL=@SQL+'WHERE a.'+(SELECT PkColumn FROM @PKs WHERE RowID=1)+' IS NULL ORDER BY 2,3'
EXEC(@SQL)
输出：
RowsOnlyExistsIn RowID RowID RowIDDiff Col1 Col1 Col1Diff Col2 Col2 Col2Diff Col3 Col3 Col3Diff
---------------- ----------- ----------- --------- ----------- ----------- -------- ----- ----- -------- ----------------------- ----------------------- --------
TableB NULL 8 Y NULL 888 Y NULL ZZZ Y NULL 2010-01-01 00:00:00.000 Y
1 1 N 111 111 N AAA AAA N 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
TableA 2 NULL Y 222 NULL Y BBB NULL Y 2010-01-01 00:00:00.000 NULL Y
3 3 N 333 333 N CCC CCC N 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
4 4 N 444 444 N DDD DD Y 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
5 5 N 555 555 N EEE EEE N 2010-01-01 00:00:00.000 2010-02-02 00:00:00.000 Y
6 6 N 666 666 N FFF FFF N 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
7 7 N 777 777 N GGG GGG N 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
9 9 N 888 888 N HHH HHH N 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
10 10 N 111 111 N III III N 2010-01-01 00:00:00.000 2010-01-01 00:00:00.000 N
(10 row(s) affected)
答案 1 :(得分：0)
我假设你想要比较数据而不是模式，我假设这些表是在diff数据库中。 我不会在SQL中执行此操作，而是将数据加载到通用的.Net DataSet中，并通过表进行迭代 对象，列和行。这样一段代码就可以用于任何数据库表，不需要笨拙的动态SQL，但是由于你需要将数据加载到数据集中，所以缺点是可能性 - 在这种情况下只需在SQl服务器上运行代码本身并将结果文件转储到文件共享。
答案 2 :(得分：0)
开源DiffKit将完成除.NET部分之外的所有操作。
www.diffkit.org