sp_CompareDB Transact-SQL Code
--------------------------------------------------------------------------------
Below is the Transact-SQL code for the sp_CompareDB stored procedure. See the accompanying article to learn how to use it.
USE Master
GO
IF EXISTS (SELECT * FROM sysobjects WHERE name = 'sp_CompareDB' and type = 'P')
DROP PROC sp_CompareDB
GO
--------------------------------------------------------------------------------------------
-- sp_CompareDB
--
-- The SP compares structures and data in 2 databases.
-- 1. Compares if all tables in one database have analog (by name) in second database
-- Tables not existing in one of databases won't be used for data comparing
-- 2. Compares if structures for tables with the same names are the same. Shows structural
-- differences like:
-- authors
-- Column Phone: in db1 - char(12), in db2 - char(14)
-- sales
-- Column Location not in db2
-- Tables, having different structures, won't be used for data comparing. However if the tables
-- contain columns of the same type and different length (like Phone in the example above) or
-- tables have compatible data types (have the same type in syscolumns - char and nchar,
-- varchar and nvarchar etc) they will be allowed for data comparing.
-- 3. Data comparison itself.
-- 3.1 Get information about unique keys in the tables. If there are unique keys then one of them
-- (PK is a highest priority candidate for this role) will be used to specify rows with
-- different data.
-- 3.2 Get information about all data columns in the table and form predicates that will be
-- used to compare data.
-- 3.3 Compare data with the criteria:
-- a. if some unique keys from the table from first database do not exist in second db (only
-- for tables with a unique key)
-- b. if some unique keys from the table from second database do not exist in first db (only
-- for tables with a unique key)
-- c. if there are rows with the same values of unique keys and different data in other
-- columns (only for tables with a unique key)
-- d. if there are rows in the table from first database that don't have a twin in the
-- table from second db
-- e. if there are rows in the table from second database that don't have a twin in the
-- table from first db
--------------------------------------------------------------------------------------------
-- Parameters:
-- 1. @db1 - name of first database to compare
-- 2. @db2 - name of second database to compare
-- 3. @TabList - list of tables to compare. if empty - all tables in the databases should be
-- compared
-- 4. @NumbToShow - number of rows with differences to show. Default - 10.
-- 5. @OnlyStructure - flag, if set to 1, allows to avoid data comparing. Only structures should
-- be compared. Default - 0
-- 6. @NoTimestamp - flag, if set to 1, allows to avoid comparing of columns of timestamp
-- data type. Default - 0
-- 7. @VerboseLevel - if set to 1 allows to print querues used for data comparison
--------------------------------------------------------------------------------------------
-- Created by Viktor Gorodnichenko (c)
-- Created on: July 5, 2001
--------------------------------------------------------------------------------------------
CREATE PROC sp_CompareDB
@db1 varchar(128),
@db2 varchar(128),
@OnlyStructure bit = 0,
@TabList varchar(8000) = '',
@NumbToShow int = 10,
@NoTimestamp bit = 0,
@VerboseLevel tinyint = 0
AS
if @OnlyStructure <> 0
set @OnlyStructure = 1
if @NoTimestamp <> 0
set @NoTimestamp = 1
if @VerboseLevel <> 0
set @VerboseLevel = 1
SET NOCOUNT ON
SET ANSI_WARNINGS ON
SET ANSI_NULLS ON
declare @sqlStr varchar(8000)
set nocount on
-- Checking if there are specified databases
declare @SrvName sysname
declare @DBName sysname
set @db1 = RTRIM(LTRIM(@db1))
set @db2 = RTRIM(LTRIM(@db2))
set @SrvName = @@SERVERNAME
if CHARINDEX('.',@db1) > 0
begin
set @SrvName = LEFT(@db1,CHARINDEX('.',@db1)-1)
if not exists (select * from master.dbo.sysservers where srvname = @SrvName)
begin
print 'There is no linked server named '+@SrvName+'. End of work.'
return
end
set @DBName = RIGHT(@db1,LEN(@db1)-CHARINDEX('.',@db1))
end
else
set @DBName = @db1
exec ('declare @Name sysname select @Name=name from ['+@SrvName+'].master.dbo.sysdatabases where name = '''+@DBName+'''')
if @@rowcount = 0
begin
print 'There is no database named '+@db1+'. End of work.'
return
end
set @SrvName = @@SERVERNAME
if CHARINDEX('.',@db2) > 0
begin
set @SrvName = LEFT(@db2,CHARINDEX('.',@db2)-1)
if not exists (select * from master.dbo.sysservers where srvname = @SrvName)
begin
print 'There is no linked server named '+@SrvName+'. End of work.'
return
end
set @DBName = RIGHT(@db2,LEN(@db2)-CHARINDEX('.',@db2))
end
else
set @DBName = @db2
exec ('declare @Name sysname select @Name=name from ['+@SrvName+'].master.dbo.sysdatabases where name = '''+@DBName+'''')
if @@rowcount = 0
begin
print 'There is no database named '+@db2+'. End of work.'
return
end
print Replicate('-',LEN(@db1)+LEN(@db2)+25)
print 'Comparing databases '+@db1+' and '+@db2
print Replicate('-',LEN(@db1)+LEN(@db2)+25)
print 'Options specified:'
print ' Compare only structures: '+CASE WHEN @OnlyStructure = 0 THEN 'No' ELSE 'Yes' END
print ' List of tables to compare: '+CASE WHEN LEN(@TabList) = 0 THEN ' All tables' ELSE @TabList END
print ' Max number of different rows in each table to show: '+LTRIM(STR(@NumbToShow))
print ' Compare timestamp columns: '+CASE WHEN @NoTimestamp = 0 THEN 'No' ELSE 'Yes' END
print ' Verbose level: '+CASE WHEN @VerboseLevel = 0 THEN 'Low' ELSE 'High' END
-----------------------------------------------------------------------------------------
-- Comparing structures
-----------------------------------------------------------------------------------------
print CHAR(10)+Replicate('-',36)
print 'Comparing structure of the databases'
print Replicate('-',36)
if exists (select * from tempdb.dbo.sysobjects where name like '#TabToCheck%')
drop table #TabToCheck
create table #TabToCheck (name sysname)
declare @NextCommaPos int
if len(@TabList) > 0
begin
while 1=1
begin
set @NextCommaPos = CHARINDEX(',',@TabList)
if @NextCommaPos = 0
begin
set @sqlstr = 'insert into #TabToCheck values('''+@TabList+''')'
exec (@sqlstr)
break
end
set @sqlstr = 'insert into #TabToCheck values('''+LEFT(@TabList,@NextCommaPos-1)+''')'
exec (@sqlstr)
set @TabList = RIGHT(@TabList,LEN(@TabList)-@NextCommaPos)
end
end
else -- then will check all tables
begin
exec ('insert into #TabToCheck select name from '+@db1+'.dbo.sysobjects where type = ''U''')
exec ('insert into #TabToCheck select name from '+@db2+'.dbo.sysobjects where type = ''U''')
end
-- First check if at least one table specified in @TabList exists in db1
exec ('declare @Name sysname select @Name=name from '+@db1+'.dbo.sysobjects where name in (select * from #TabToCheck)')
if @@rowcount = 0
begin
print 'No tables in '+@db1+' to check. End of work.'
return
end
-- Check if tables existing in db1 are in db2 (all tables or specified in @TabList)
if exists (select * from tempdb.dbo.sysobjects where name like '#TabNotInDB2%')
drop table #TabNotInDB2
create table #TabNotInDB2 (name sysname)
insert into #TabNotInDB2
exec ('select name from '+@db1+'.dbo.sysobjects d1o '+
'where name in (select * from #TabToCheck) and '+
' d1o.type = ''U'' and not exists '+
'(select * from '+@db2+'.dbo.sysobjects d2o'+
' where d2o.type = ''U'' and d2o.name = d1o.name)')
if @@rowcount > 0
begin
print CHAR(10)+'The table(s) exist in '+@db1+', but do not exist in '+@db2+':'
select * from #TabNotInDB2
end
delete from #TabToCheck where name in (select * from #TabNotInDB2)
drop table #TabNotInDB2
if exists (select * from tempdb.dbo.sysobjects where name like '#TabNotInDB1%')
drop table #TabNotInDB1
create table #TabNotInDB1 (name sysname)
insert into #TabNotInDB1
exec ('select name from '+@db2+'.dbo.sysobjects d1o '+
'where name in (select * from #TabToCheck) and '+
' d1o.type = ''U'' and not exists '+
'(select * from '+@db1+'.dbo.sysobjects d2o'+
' where d2o.type = ''U'' and d2o.name = d1o.name)')
if @@rowcount > 0
begin
print CHAR(10)+'The table(s) exist in '+@db2+', but do not exist in '+@db1+':'
select * from #TabNotInDB1
end
delete from #TabToCheck where name in (select * from #TabNotInDB1)
drop table #TabNotInDB1
-- Comparing structures of tables existing in both dbs
print CHAR(10)+'Checking if there are tables existing in both databases having structural differences ...'+CHAR(10)
if exists (select * from tempdb.dbo.sysobjects where name like '#DiffStructure%')
drop table #DiffStructure
create table #DiffStructure (name sysname)
set @sqlStr='
declare @TName1 sysname, @TName2 sysname, @CName1 sysname, @CName2 sysname,
@TypeName1 sysname, @TypeName2 sysname,
@CLen1 smallint, @CLen2 smallint, @Type1 sysname, @Type2 sysname, @PrevTName sysname
declare @DiffStructure bit
declare Diff cursor fast_forward for
select d1o.name, d2o.name, d1c.name, d2c.name, d1t.name, d2t.name,
d1c.length, d2c.length, d1c.type, d2c.type
from ('+@db1+'.dbo.sysobjects d1o
JOIN '+@db2+'.dbo.sysobjects d2o2 ON d1o.name = d2o2.name and d1o.type = ''U'' --only tables in both dbs
and d1o.name in (select * from #TabToCheck)
JOIN '+@db1+'.dbo.syscolumns d1c ON d1o.id = d1c.id
JOIN '+@db1+'.dbo.systypes d1t ON d1c.xusertype = d1t.xusertype)
FULL JOIN ('+@db2+'.dbo.sysobjects d2o
JOIN '+@db1+'.dbo.sysobjects d1o2 ON d1o2.name = d2o.name and d2o.type = ''U'' --only tables in both dbs
and d2o.name in (select * from #TabToCheck)
JOIN '+@db2+'.dbo.syscolumns d2c ON d2c.id = d2o.id
JOIN '+@db2+'.dbo.systypes d2t ON d2c.xusertype = d2t.xusertype)
ON d1o.name = d2o.name and d1c.name = d2c.name
WHERE (not exists
(select * from '+@db2+'.dbo.sysobjects d2o2
JOIN '+@db2+'.dbo.syscolumns d2c2 ON d2o2.id = d2c2.id
JOIN '+@db2+'.dbo.systypes d2t2 ON d2c2.xusertype = d2t2.xusertype
where d2o2.type = ''U''
and d2o2.name = d1o.name
and d2c2.name = d1c.name
and d2t2.name = d1t.name
and d2c2.length = d1c.length)
OR not exists
(select * from '+@db1+'.dbo.sysobjects d1o2
JOIN '+@db1+'.dbo.syscolumns d1c2 ON d1o2.id = d1c2.id
JOIN '+@db1+'.dbo.systypes d1t2 ON d1c2.xusertype = d1t2.xusertype
where d1o2.type = ''U''
and d1o2.name = d2o.name
and d1c2.name = d2c.name
and d1t2.name = d2t.name
and d1c2.length = d2c.length))
order by coalesce(d1o.name,d2o.name), d1c.name
open Diff
fetch next from Diff into @TName1, @TName2, @CName1, @CName2, @TypeName1, @TypeName2,
@CLen1, @CLen2, @Type1, @Type2
set @PrevTName = ''''
set @DiffStructure = 0
while @@fetch_status = 0
begin
if Coalesce(@TName1,@TName2) <> @PrevTName
begin
if @PrevTName <> '''' and @DiffStructure = 1
begin
insert into #DiffStructure values (@PrevTName)
set @DiffStructure = 0
end
set @PrevTName = Coalesce(@TName1,@TName2)
print @PrevTName
end
if @CName2 is null
print '' Colimn ''+RTRIM(@CName1)+'' not in '+@db2+'''
else
if @CName1 is null
print '' Colimn ''+RTRIM(@CName2)+'' not in '+@db1+'''
else
if @TypeName1 <> @TypeName2
print '' Colimn ''+RTRIM(@CName1)+'': in '+@db1+' - ''+RTRIM(@TypeName1)+'', in '+@db2+' - ''+RTRIM(@TypeName2)
else --the columns are not null(are in both dbs) and types are equal,then length are diff
print '' Colimn ''+RTRIM(@CName1)+'': in '+@db1+' - ''+RTRIM(@TypeName1)+''(''+
LTRIM(STR(CASE when @TypeName1=''nChar'' or @TypeName1 = ''nVarChar'' then @CLen1/2 else @CLen1 end))+
''), in '+@db2+' - ''+RTRIM(@TypeName2)+''(''+
LTRIM(STR(CASE when @TypeName1=''nChar'' or @TypeName1 = ''nVarChar'' then @CLen2/2 else @CLen2 end))+'')''
if @Type1 = @Type2
set @DiffStructure=@DiffStructure -- Do nothing. Cannot invert predicate
else
set @DiffStructure = 1
fetch next from Diff into @TName1, @TName2, @CName1, @CName2, @TypeName1, @TypeName2,
@CLen1, @CLen2, @Type1, @Type2
end
deallocate Diff
if @DiffStructure = 1
insert into #DiffStructure values (@PrevTName)
'
exec (@sqlStr)
if (select count(*) from #DiffStructure) > 0
begin
print CHAR(10)+'The table(s) have the same name and different structure in the databases:'
select distinct * from #DiffStructure
delete from #TabToCheck where name in (select * from #DiffStructure)
end
else
print CHAR(10)+'There are no tables with the same name and structural differences in the databases'+CHAR(10)+CHAR(10)
if @OnlyStructure = 1
begin
print 'The option ''Only compare structures'' was specified. End of work.'
return
end
exec ('declare @Name sysname select @Name=d1o.name
from '+@db1+'.dbo.sysobjects d1o, '+@db2+'.dbo.sysobjects d2o
where d1o.name = d2o.name and d1o.type = ''U'' and d2o.type = ''U''
and d1o.name not in (''dtproperties'')
and d1o.name in (select * from #TabToCheck)')
if @@rowcount = 0
begin
print 'There are no tables with the same name and structure in the databases to compare. End of work.'
return
end
-----------------------------------------------------------------------------------------
-- Comparing data
-----------------------------------------------------------------------------------------
-- ##CompareStr - will be used to pass comparing strings into dynamic script
-- to execute the string
if exists (select * from tempdb.dbo.sysobjects where name like '##CompareStr%')
drop table ##CompareStr
create table ##CompareStr (Ind int, CompareStr varchar(8000))
if exists (select * from tempdb.dbo.sysobjects where name like '#DiffTables%')
drop table #DiffTables
create table #DiffTables (Name sysname)
if exists (select * from tempdb.dbo.sysobjects where name like '#IdenticalTables%')
drop table #IdenticalTables
create table #IdenticalTables (Name sysname)
if exists (select * from tempdb.dbo.sysobjects where name like '#EmptyTables%')
drop table #EmptyTables
create table #EmptyTables (Name sysname)
if exists (select * from tempdb.dbo.sysobjects where name like '#NoPKTables%')
drop table #NoPKTables
create table #NoPKTables (Name sysname)
if exists (select * from tempdb.dbo.sysobjects where name like '#IndList1%')
truncate table #IndList1
else
create table #IndList1 (IndId int, IndStatus int,
KeyAndStr varchar(7000), KeyCommaStr varchar(1000))
if exists (select * from tempdb.dbo.sysobjects where name like '#IndList2%')
truncate table #IndList2
else
create table #IndList2 (IndId smallint, IndStatus int,
KeyAndStr varchar(7000), KeyCommaStr varchar(1000))
print Replicate('-',51)
print 'Comparing data in tables with indentical structure:'
print Replicate('-',51)
--------------------------------------------------------------------------------------------
-- Cursor for all tables in dbs (or for all specified tables if parameter @TabList is passed)
--------------------------------------------------------------------------------------------
declare @SqlStrGetListOfKeys1 varchar(8000)
declare @SqlStrGetListOfKeys2 varchar(8000)
declare @SqlStrGetListOfColumns varchar(8000)
declare @SqlStrCompareUKeyTables varchar(8000)
declare @SqlStrCompareNonUKeyTables varchar(8000)
set @SqlStrGetListOfKeys1 = '
declare @sqlStr varchar(8000)
declare @ExecSqlStr varchar(8000)
declare @PrintSqlStr varchar(8000)
declare @Tab varchar(128)
declare @d1User varchar(128)
declare @d2User varchar(128)
declare @KeyAndStr varchar(8000)
declare @KeyCommaStr varchar(8000)
declare @AndStr varchar(8000)
declare @Eq varchar(8000)
declare @IndId int
declare @IndStatus int
declare @CurrIndId smallint
declare @CurrStatus int
declare @UKey sysname
declare @Col varchar(128)
declare @LastUsedCol varchar(128)
declare @xType int
declare @Len int
declare @SelectStr varchar(8000)
declare @ExecSql nvarchar(1000)
declare @NotInDB1 bit
declare @NotInDB2 bit
declare @NotEq bit
declare @Numb int
declare @Cnt1 int
declare @Cnt2 int
set @Numb = 0
declare @StrInd int
declare @i int
declare @PrintStr varchar(8000)
declare @ExecStr varchar(8000)
declare TabCur cursor for
select d1o.name, d1u.name, d2u.name from '+@db1+'.dbo.sysobjects d1o, '+@db2+'.dbo.sysobjects d2o,
'+@db1+'.dbo.sysusers d1u, '+@db2+'.dbo.sysusers d2u
where d1o.name = d2o.name and d1o.type = ''U'' and d2o.type = ''U''
and d1o.uid = d1u.uid and d2o.uid = d2u.uid
and d1o.name not in (''dtproperties'')
and d1o.name in (select * from #TabToCheck)
order by 1
open TabCur
fetch next from TabCur into @Tab, @d1User, @d2User
while @@fetch_status = 0
begin
set @Numb = @Numb + 1
print Char(13)+Char(10)+LTRIM(STR(@Numb))+''. TABLE: [''+@Tab+''] ''
set @ExecSql = ''SELECT @Cnt = count(*) FROM '+@db1+'.[''+@d1User+''].[''+@Tab+'']''
exec sp_executesql @ExecSql, N''@Cnt int output'', @Cnt = @Cnt1 output
print CHAR(10)+STR(@Cnt1)+'' rows in '+@db1+'''
set @ExecSql = ''SELECT @Cnt = count(*) FROM '+@db2+'.[''+@d2User+''].[''+@Tab+'']''
exec sp_executesql @ExecSql, N''@Cnt int output'', @Cnt = @Cnt2 output
print STR(@Cnt2)+'' rows in '+@db2+'''
if @Cnt1 = 0 and @Cnt2 = 0
begin
exec ('' insert into #EmptyTables values(''''[''+@Tab+'']'''')'')
goto NextTab
end
set @KeyAndStr = ''''
set @KeyCommaStr = ''''
set @NotInDB1 = 0
set @NotInDB2 = 0
set @NotEq = 0
set @KeyAndStr = ''''
set @KeyCommaStr = ''''
truncate table #IndList1
declare UKeys cursor fast_forward for
select i.indid, i.status, c.name, c.xType from '+@db1+'.dbo.sysobjects o, '+@db1+'.dbo.sysindexes i, '+@db1+'.dbo.sysindexkeys k, '+@db1+'.dbo.syscolumns c
where i.id = o.id and o.name = @Tab
and (i.status & 2)<>0
and k.id = o.id and k.indid = i.indid
and c.id = o.id and c.colid = k.colid
order by i.indid, c.name
open UKeys
fetch next from UKeys into @IndId, @IndStatus, @UKey, @xType
set @CurrIndId = @IndId
set @CurrStatus = @IndStatus
while @@fetch_status = 0
begin
if @KeyAndStr <> ''''
begin
set @KeyAndStr = @KeyAndStr + '' and '' + CHAR(10)
set @KeyCommaStr = @KeyCommaStr + '', ''
end
if @xType = 175 or @xType = 167 or @xType = 239 or @xType = 231 -- char, varchar, nchar, nvarchar
begin
set @KeyAndStr = @KeyAndStr + '' ISNULL(d1.[''+@UKey+''],''''!#null$'''')=ISNULL(d2.[''+@UKey+''],''''!#null$'''') ''
end
if @xType = 173 or @xType = 165 -- binary, varbinary
begin
set @KeyAndStr = @KeyAndStr +
'' CASE WHEN d1.[''+@UKey+''] is null THEN 0x4D4FFB23A49411D5BDDB00A0C906B7B4 ELSE d1.[''+@UKey+''] END=''+
''CASE WHEN d2.[''+@UKey+''] is null THEN 0x4D4FFB23A49411D5BDDB00A0C906B7B4 ELSE d2.[''+@UKey+''] END ''
end
else if @xType = 56 or @xType = 127 or @xType = 60 or @xType = 122 -- int, 127 - bigint,60 - money, 122 - smallmoney
begin
set @KeyAndStr = @KeyAndStr +
'' CASE WHEN d1.[''+@UKey+''] is null THEN 971428763405345098745 ELSE d1.[''+@UKey+''] END=''+
''CASE WHEN d2.[''+@UKey+''] is null THEN 971428763405345098745 ELSE d2.[''+@UKey+''] END ''
end
else if @xType = 106 or @xType = 108 -- int, decimal, numeric
begin
set @KeyAndStr = @KeyAndStr +
'' CASE WHEN d1.[''+@UKey+''] is null THEN 71428763405345098745098.8723 ELSE d1.[''+@UKey+''] END=''+
''CASE WHEN d2.[''+@UKey+''] is null THEN 71428763405345098745098.8723 ELSE d2.[''+@UKey+''] END ''
end
else if @xType = 62 or @xType = 59 -- 62 - float, 59 - real
begin
set @KeyAndStr = @KeyAndStr +
'' CASE WHEN d1.[''+@UKey+''] is null THEN 8764589764.22708E237 ELSE d1.[''+@UKey+''] END=''+
''CASE WHEN d2.[''+@UKey+''] is null THEN 8764589764.22708E237 ELSE d2.[''+@UKey+''] END ''
end
else if @xType = 52 or @xType = 48 or @xType = 104 -- smallint, tinyint, bit
begin
set @KeyAndStr = @KeyAndStr + '' CASE WHEN d1.[''+@UKey+''] is null THEN 99999 ELSE d1.[''+@UKey+''] END=''+
''CASE WHEN d2.[''+@UKey+''] is null THEN 99999 ELSE d2.[''+@UKey+''] END ''
end
else if @xType = 36 -- 36 - id
begin
set @KeyAndStr = @KeyAndStr +
'' CASE WHEN d1.[''+@UKey+''] is null''+
'' THEN CONVERT(uniqueidentifier,''''1CD827A0-744A-4866-8401-B9902CF2D4FB'''')''+
'' ELSE d1.[''+@UKey+''] END=''+
''CASE WHEN d2.[''+@UKey+''] is null''+
'' THEN CONVERT(uniqueidentifier,''''1CD827A0-744A-4866-8401-B9902CF2D4FB'''')''+
'' ELSE d2.[''+@UKey+''] END''
end
else if @xType = 61 or @xType = 58 -- datetime, smalldatetime
begin
set @KeyAndStr = @KeyAndStr +
'' CASE WHEN d1.[''+@UKey+''] is null THEN ''''!#null$'''' ELSE CONVERT(varchar(40),d1.[''+@UKey+''],109) END=''+
''CASE WHEN d2.[''+@UKey+''] is null THEN ''''!#null$'''' ELSE CONVERT(varchar(40),d2.[''+@UKey+''],109) END ''
end
else if @xType = 189 -- timestamp (189)
begin
set @KeyAndStr = @KeyAndStr + '' d1.[''+@UKey+'']=d2.[''+@UKey+''] ''
end
else if @xType = 98 -- SQL_variant
begin
set @KeyAndStr = @KeyAndStr + '' ISNULL(d1.[''+@UKey+''],''''!#null$'''')=ISNULL(d2.[''+@UKey+''],''''!#null$'''') ''
end
set @KeyCommaStr = @KeyCommaStr + '' d1.''+@UKey
fetch next from UKeys into @IndId, @IndStatus, @UKey, @xType
if @IndId <> @CurrIndId
begin
insert into #IndList1 values (@CurrIndId, @CurrStatus, @KeyAndStr, @KeyCommaStr)
set @CurrIndId = @IndId
set @CurrStatus = @IndStatus
set @KeyAndStr = ''''
set @KeyCommaStr = ''''
end
end
deallocate UKeys
insert into #IndList1 values (@CurrIndId, @CurrStatus, @KeyAndStr, @KeyCommaStr)'
set @SqlStrGetListOfKeys2 = '
set @KeyAndStr = ''''
set @KeyCommaStr = ''''
truncate table #IndList2
declare UKeys cursor fast_forward for
select i.indid, i.status, c.name, c.xType from '+@db2+'.dbo.sysobjects o, '+@db2+'.dbo.sysindexes i, '+@db2+'.dbo.sysindexkeys k, '+@db2+'.dbo.syscolumns c
where i.id = o.id and o.name = @Tab
and (i.status & 2)<>0
and k.id = o.id and k.indid = i.indid
and c.id = o.id and c.colid = k.colid
order by i.indid, c.name
open UKeys
fetch next from UKeys into @IndId, @IndStatus, @UKey, @xType
set @CurrIndId = @IndId
set @CurrStatus = @IndStatus
while @@fetch_status = 0
begin
if @KeyAndStr <> ''''
begin
set @KeyAndStr = @KeyAndStr + '' and '' + CHAR(10)
set @KeyCommaStr = @KeyCommaStr + '', ''
end
if @xType = 175 or @xType = 167 or @xType = 239 or @xType = 231 -- char, varchar, nchar, nvarchar
begin
set @KeyAndStr = @KeyAndStr + '' ISNULL(d1.[''+@UKey+''],''''!#null$'''')=ISNULL(d2.[''+@UKey+''],''''!#null$'''') ''
end
if @xType = 173 or @xType = 165 -- binary, varbinary
begin
set @KeyAndStr = @KeyAndStr +
'' CASE WHEN d1.[''+@UKey+''] is null THEN 0x4D4FFB23A49411D5BDDB00A0C906B7B4 ELSE d1.[''+@UKey+''] END=''+
''CASE WHEN d2.[''+@UKey+''] is null THEN 0x4D4FFB23A49411D5BDDB00A0C906B7B4 ELSE d2.[''+@UKey+''] END ''
end
else if @xType = 56 or @xType = 127 or @xType = 60 or @xType = 122 -- int, 127 - bigint,60 - money, 122 - smallmoney
begin
set @KeyAndStr = @KeyAndStr +
'' CASE WHEN d1.[''+@UKey+''] is null THEN 971428763405345098745 ELSE d1.[''+@UKey+''] END=''+
''CASE WHEN d2.[''+@UKey+''] is null THEN 971428763405345098745 ELSE d2.[''+@UKey+''] END ''
end
else if @xType = 106 or @xType = 108 -- int, decimal, numeric
begin
set @KeyAndStr = @KeyAndStr +
'' CASE WHEN d1.[''+@UKey+''] is null THEN 71428763405345098745098.8723 ELSE d1.[''+@UKey+''] END=''+
''CASE WHEN d2.[''+@UKey+''] is null THEN 71428763405345098745098.8723 ELSE d2.[''+@UKey+''] END ''
end
else if @xType = 62 or @xType = 59 -- 62 - float, 59 - real
begin
set @KeyAndStr = @KeyAndStr +
'' CASE WHEN d1.[''+@UKey+''] is null THEN 8764589764.22708E237 ELSE d1.[''+@UKey+''] END=''+
''CASE WHEN d2.[''+@UKey+''] is null THEN 8764589764.22708E237 ELSE d2.[''+@UKey+''] END ''
end
else if @xType = 52 or @xType = 48 or @xType = 104 -- smallint, tinyint, bit
begin
set @KeyAndStr = @KeyAndStr + '' CASE WHEN d1.[''+@UKey+''] is null THEN 99999 ELSE d1.[''+@UKey+''] END=''+
''CASE WHEN d2.[''+@UKey+''] is null THEN 99999 ELSE d2.[''+@UKey+''] END ''
end
else if @xType = 36 -- 36 - id
begin
set @KeyAndStr = @KeyAndStr +
'' CASE WHEN d1.[''+@UKey+''] is null''+
'' THEN CONVERT(uniqueidentifier,''''1CD827A0-744A-4866-8401-B9902CF2D4FB'''')''+
'' ELSE d1.[''+@UKey+''] END=''+
''CASE WHEN d2.[''+@UKey+''] is null''+
'' THEN CONVERT(uniqueidentifier,''''1CD827A0-744A-4866-8401-B9902CF2D4FB'''')''+
'' ELSE d2.[''+@UKey+''] END''
end
else if @xType = 61 or @xType = 58 -- datetime, smalldatetime
begin
set @KeyAndStr = @KeyAndStr +
'' CASE WHEN d1.[''+@UKey+''] is null THEN ''''!#null$'''' ELSE CONVERT(varchar(40),d1.[''+@UKey+''],109) END=''+
''CASE WHEN d2.[''+@UKey+''] is null THEN ''''!#null$'''' ELSE CONVERT(varchar(40),d2.[''+@UKey+''],109) END ''
end
else if @xType = 189 -- timestamp (189)
begin
set @KeyAndStr = @KeyAndStr + '' d1.[''+@UKey+'']=d2.[''+@UKey+''] ''
end
else if @xType = 98 -- SQL_variant
begin
set @KeyAndStr = @KeyAndStr + '' ISNULL(d1.[''+@UKey+''],''''!#null$'''')=ISNULL(d2.[''+@UKey+''],''''!#null$'''') ''
end
set @KeyCommaStr = @KeyCommaStr + '' d1.''+@UKey
fetch next from UKeys into @IndId, @IndStatus, @UKey, @xType
if @IndId <> @CurrIndId
begin
insert into #IndList2 values (@CurrIndId, @CurrStatus, @KeyAndStr, @KeyCommaStr)
set @CurrIndId = @IndId
set @CurrStatus = @IndStatus
set @KeyAndStr = ''''
set @KeyCommaStr = ''''
end
end
deallocate UKeys
insert into #IndList2 values (@CurrIndId, @CurrStatus, @KeyAndStr, @KeyCommaStr)
set @KeyCommaStr = null
select @KeyCommaStr=i1.KeyCommaStr from #IndList1 i1
join #IndList2 i2 on i1.KeyCommaStr = i2.KeyCommaStr
where (i1.IndStatus & 2048)<> 0 and (i2.IndStatus & 2048)<>0
if @KeyCommaStr is null
set @KeyCommaStr = (select top 1 i1.KeyCommaStr from #IndList1 i1
join #IndList2 i2 on i1.KeyCommaStr = i2.KeyCommaStr)
set @KeyAndStr = (select TOP 1 KeyAndStr from #IndList1 where KeyCommaStr = @KeyCommaStr)
if @KeyCommaStr is null
set @KeyCommaStr = ''''
if @KeyAndStr is null
set @KeyAndStr = '''''
set @SqlStrGetListOfColumns = '
set @AndStr = ''''
set @StrInd = 1
declare Cols cursor local fast_forward for
select c.name, c.xtype, c.length from '+@db1+'.dbo.sysobjects o, '+@db1+'.dbo.syscolumns c
where o.id = c.id and o.name = @Tab
and CHARINDEX(c.name, @KeyCommaStr) = 0
open Cols
fetch next from Cols into @Col, @xType, @len
while @@fetch_status = 0
begin
if @xType = 175 or @xType = 167 or @xType = 239 or @xType = 231 -- char, varchar, nchar, nvarchar
begin
set @Eq = ''ISNULL(d1.[''+@Col+''],''''!#null$'''')=ISNULL(d2.[''+@Col+''],''''!#null$'''') ''
end
if @xType = 173 or @xType = 165 -- binary, varbinary
begin
set @Eq = ''CASE WHEN d1.[''+@Col+''] is null THEN 0x4D4FFB23A49411D5BDDB00A0C906B7B4 ELSE d1.[''+@Col+''] END=''+
''CASE WHEN d2.[''+@Col+''] is null THEN 0x4D4FFB23A49411D5BDDB00A0C906B7B4 ELSE d2.[''+@Col+''] END ''
end
else if @xType = 56 or @xType = 127 or @xType = 60 or @xType = 122 -- int, 127 - bigint,60 - money, 122 - smallmoney
begin
set @Eq = ''CASE WHEN d1.[''+@Col+''] is null THEN 971428763405345098745 ELSE d1.[''+@Col+''] END=''+
''CASE WHEN d2.[''+@Col+''] is null THEN 971428763405345098745 ELSE d2.[''+@Col+''] END ''
end
else if @xType = 106 or @xType = 108 -- int, decimal, numeric
begin
set @Eq = ''CASE WHEN d1.[''+@Col+''] is null THEN 71428763405345098745098.8723 ELSE d1.[''+@Col+''] END=''+
''CASE WHEN d2.[''+@Col+''] is null THEN 71428763405345098745098.8723 ELSE d2.[''+@Col+''] END ''
end
else if @xType = 62 or @xType = 59 -- 62 - float, 59 - real
begin
set @Eq = ''CASE WHEN d1.[''+@Col+''] is null THEN 8764589764.22708E237 ELSE d1.[''+@Col+''] END=''+
''CASE WHEN d2.[''+@Col+''] is null THEN 8764589764.22708E237 ELSE d2.[''+@Col+''] END ''
end
else if @xType = 52 or @xType = 48 or @xType = 104 -- smallint, tinyint, bit
begin
set @Eq = ''CASE WHEN d1.[''+@Col+''] is null THEN 99999 ELSE d1.[''+@Col+''] END=''+
''CASE WHEN d2.[''+@Col+''] is null THEN 99999 ELSE d2.[''+@Col+''] END ''
end
else if @xType = 36 -- 36 - id
begin
set @Eq = ''CASE WHEN d1.[''+@Col+''] is null''+
'' THEN CONVERT(uniqueidentifier,''''1CD827A0-744A-4866-8401-B9902CF2D4FB'''')''+
'' ELSE d1.[''+@Col+''] END=''+
''CASE WHEN d2.[''+@Col+''] is null''+
'' THEN CONVERT(uniqueidentifier,''''1CD827A0-744A-4866-8401-B9902CF2D4FB'''')''+
'' ELSE d2.[''+@Col+''] END''
end
else if @xType = 61 or @xType = 58 -- datetime, smalldatetime
begin
set @Eq =
''CASE WHEN d1.[''+@Col+''] is null THEN ''''!#null$'''' ELSE CONVERT(varchar(40),d1.[''+@Col+''],109) END=''+
''CASE WHEN d2.[''+@Col+''] is null THEN ''''!#null$'''' ELSE CONVERT(varchar(40),d2.[''+@Col+''],109) END ''
end
else if @xType = 34
begin
set @Eq = ''ISNULL(DATALENGTH(d1.[''+@Col+'']),0)=ISNULL(DATALENGTH(d2.[''+@Col+'']),0) ''
end
else if @xType = 35 or @xType = 99 -- text (35),ntext (99)
begin
set @Eq = ''ISNULL(SUBSTRING(d1.[''+@Col+''],1,DATALENGTH(d1.[''+@Col+
''])),''''!#null$'''')=ISNULL(SUBSTRING(d2.[''+@Col+''],1,DATALENGTH(d2.[''+@Col+''])),''''!#null$'''') ''
end
else if @xType = 189
begin
if '+STR(@NoTimestamp)+' = 0
set @Eq = ''d1.[''+@Col+'']=d2.[''+@Col+''] ''
else
set @Eq = ''1=1''
end
else if @xType = 98 -- SQL_variant
begin
set @Eq = ''ISNULL(d1.[''+@Col+''],''''!#null$'''')=ISNULL(d2.[''+@Col+''],''''!#null$'''') ''
end
if @AndStr = ''''
set @AndStr = @AndStr + CHAR(10) + '' '' + @Eq
else
if len(@AndStr) + len('' and '' + @Eq)<8000
set @AndStr = @AndStr + '' and '' + CHAR(10) + '' '' + @Eq
else
begin
set @StrInd = @StrInd + 1
Insert into ##CompareStr values(@StrInd,@AndStr)
set @AndStr = '' and '' + @Eq
end
fetch next from Cols into @Col, @xType, @len
end
deallocate Cols '
set @SqlStrCompareUKeyTables = '
if @KeyAndStr <> ''''
begin
set @SelectStr = ''SELECT ''+ @KeyCommaStr+'' INTO ##NotInDb2 FROM '+@db1+'.[''+@d1User+''].[''+@Tab+''] d1 ''+
'' WHERE not exists''+CHAR(10)+'' (SELECT * FROM '+@db2+'.[''+@d2User+''].[''+@Tab+''] d2 ''+
'' WHERE ''+CHAR(10)+@KeyAndStr+'')''
if '+STR(@VerboseLevel)+' = 1
print CHAR(10)+''To find rows that are in '+@db1+', but are not in db2:''+CHAR(10)+
REPLACE (@SelectStr, ''into ##NotInDB2'','''')
exec (@SelectStr)
if @@rowcount > 0
set @NotInDB2 = 1
set @SelectStr = ''SELECT ''+@KeyCommaStr+'' INTO ##NotInDB1 FROM '+@db2+'.[''+@d2User+''].[''+@Tab+''] d1 ''+
'' WHERE not exists''+CHAR(10)+'' (SELECT * FROM '+@db1+'.[''+@d1User+''].[''+@Tab+''] d2 ''+
'' WHERE ''+CHAR(10)+@KeyAndStr+'')''
if '+STR(@VerboseLevel)+' = 1
print CHAR(10)+''To find rows that are in '+@db2+', but are not in '+@db1+':''+CHAR(10)+
REPLACE (@SelectStr, ''into ##NotInDB1'','''')
exec (@SelectStr)
if @@rowcount > 0
set @NotInDB1 = 1
-- if there are non-key columns
if @AndStr <> ''''
begin
set @PrintStr = '' Print ''
set @ExecStr = '' exec (''
set @SqlStr = ''''
Insert into ##CompareStr values(1,
''SELECT ''+ @KeyCommaStr+'' INTO ##NotEq FROM '+@db2+'.[''+@d2User+''].[''+@Tab+''] d1 ''+
'' INNER JOIN '+@db1+'.[''+@d1User+''].[''+@Tab+''] d2 ON ''+CHAR(10)+@KeyAndStr+CHAR(10)+''WHERE not('')
-- Adding last string in temp table containing a comparing string to execute
set @StrInd = @StrInd + 1
Insert into ##CompareStr values(@StrInd,@AndStr+'')'')
set @i = 1
while @i <= @StrInd
begin
set @SqlStr = @SqlStr + '' declare @Str''+LTRIM(STR(@i))+'' varchar(8000) ''+
''select @Str''+LTRIM(STR(@i))+''=CompareStr FROM ##CompareStr WHERE ind = ''+STR(@i)
if @ExecStr <> '' exec (''
set @ExecStr = @ExecStr + ''+''
if @PrintStr <> '' Print ''
set @PrintStr = @PrintStr + ''+''
set @ExecStr = @ExecStr + ''@Str''+LTRIM(STR(@i))
set @PrintStr = @PrintStr + '' REPLACE(@Str''+LTRIM(STR(@i))+'','''' into ##NotEq'''','''''''') ''
set @i = @i + 1
end
set @ExecStr = @ExecStr + '') ''
set @ExecSqlStr = @SqlStr + @ExecStr
set @PrintSqlStr = @SqlStr +
'' Print CHAR(10)+''''To find rows that are different in non-key columns:'''' ''+
@PrintStr
if '+STR(@VerboseLevel)+' = 1
exec (@PrintSqlStr)
exec (@ExecSqlStr)
if @@rowcount > 0
set @NotEq = 1
end
else
if '+STR(@VerboseLevel)+' = 1
print CHAR(10)+''There are no non-key columns in the table''
truncate table ##CompareStr
if @NotInDB1 = 1 or @NotInDB2 = 1 or @NotEq = 1
begin
print CHAR(10)+''Data are different''
if @NotInDB2 = 1 and '+STR(@NumbToShow)+' > 0
begin
print ''These key values exist in '+@db1+', but do not exist in '+@db2+': ''
set @SelectStr = ''select top ''+STR('+STR(@NumbToShow)+')+'' * from ##NotInDB2''
exec (@SelectStr)
end
if @NotInDB1 = 1 and '+STR(@NumbToShow)+' > 0
begin
print ''These key values exist in '+@db2+', but do not exist in '+@db1+': ''
set @SelectStr = ''select top ''+STR('+STR(@NumbToShow)+')+'' * from ##NotInDB1''
exec (@SelectStr)
end
if @NotEq = 1 and '+STR(@NumbToShow)+' > 0
begin
print ''Row(s) with these key values contain differences in non-key columns: ''
set @SelectStr = ''select top ''+STR('+STR(@NumbToShow)+')+'' * from ##NotEq''
exec (@SelectStr)
end
exec (''insert into #DiffTables values(''''[''+@Tab+'']'''')'')
end
else
begin
print CHAR(10)+''Data are identical''
exec ('' insert into #IdenticalTables values(''''[''+@Tab+'']'''')'')
end
if exists (select * from tempdb.dbo.sysobjects where name like ''##NotEq%'')
drop table ##NotEq
end
else '
set @SqlStrCompareNonUKeyTables = '
begin
exec (''insert into #NoPKTables values(''''[''+@Tab+'']'''')'')
set @PrintStr = '' Print ''
set @ExecStr = '' exec (''
set @SqlStr = ''''
Insert into ##CompareStr values(1,
''SELECT ''+
'' * INTO ##NotInDB2 FROM '+@db1+'.[''+@d1User+''].[''+@Tab+''] d1 WHERE not exists ''+CHAR(10)+
'' (SELECT * FROM '+@db2+'.[''+@d2User+''].[''+@Tab+''] d2 WHERE '')
set @StrInd = @StrInd + 1
Insert into ##CompareStr values(@StrInd,@AndStr+'')'')
set @i = 1
while @i <= @StrInd
begin
set @SqlStr = @SqlStr + '' declare @Str''+LTRIM(STR(@i))+'' varchar(8000) ''+
''select @Str''+LTRIM(STR(@i))+''=CompareStr FROM ##CompareStr WHERE ind = ''+STR(@i)
if @ExecStr <> '' exec (''
set @ExecStr = @ExecStr + ''+''
if @PrintStr <> '' Print ''
set @PrintStr = @PrintStr + ''+''
set @ExecStr = @ExecStr + ''@Str''+LTRIM(STR(@i))
set @PrintStr = @PrintStr + '' REPLACE(@Str''+LTRIM(STR(@i))+'','''' into ##NotInDB2'''','''''''') ''
set @i = @i + 1
end
set @ExecStr = @ExecStr + '') ''
set @ExecSqlStr = @SqlStr + @ExecStr
set @PrintSqlStr = @SqlStr +
'' Print CHAR(10)+''''To find rows that are in '+@db1+', but are not in '+@db2+':'''' ''+
@PrintStr
if '+STR(@VerboseLevel)+' = 1
exec (@PrintSqlStr)
exec (@ExecSqlStr)
if @@rowcount > 0
set @NotInDB2 = 1
delete from ##CompareStr where ind = 1
set @PrintStr = '' Print ''
set @ExecStr = '' exec (''
set @SqlStr = ''''
Insert into ##CompareStr values(1,
''SELECT ''+
'' * INTO ##NotInDB1 FROM '+@db2+'.[''+@d2User+''].[''+@Tab+''] d1 WHERE not exists ''+CHAR(10)+
'' (SELECT * FROM '+@db1+'.[''+@d1User+''].[''+@Tab+''] d2 WHERE '')
set @i = 1
while @i <= @StrInd
begin
set @SqlStr = @SqlStr + '' declare @Str''+LTRIM(STR(@i))+'' varchar(8000) ''+
''select @Str''+LTRIM(STR(@i))+''=CompareStr FROM ##CompareStr WHERE ind = ''+STR(@i)
if @ExecStr <> '' exec (''
set @ExecStr = @ExecStr + ''+''
if @PrintStr <> '' Print ''
set @PrintStr = @PrintStr + ''+''
set @ExecStr = @ExecStr + ''@Str''+LTRIM(STR(@i))
set @PrintStr = @PrintStr + '' REPLACE(@Str''+LTRIM(STR(@i))+'','''' into ##NotInDB1'''','''''''') ''
set @i = @i + 1
end
set @ExecStr = @ExecStr + '') ''
set @ExecSqlStr = @SqlStr + @ExecStr
set @PrintSqlStr = @SqlStr +
'' Print CHAR(10)+''''To find rows that are in '+@db2+', but are not in '+@db1+':'''' ''+
@PrintStr
if '+STR(@VerboseLevel)+' = 1
exec (@PrintSqlStr)
exec (@ExecSqlStr)
if @@rowcount > 0
set @NotInDB1 = 1
truncate table ##CompareStr
if @NotInDB1 = 1 or @NotInDB2 = 1
begin
print CHAR(10)+''Data are different''
if @NotInDB2 = 1 and '+STR(@NumbToShow)+' > 0
begin
print ''The row(s) exist in '+@db1+', but do not exist in '+@db2+': ''
set @SelectStr = ''select top ''+STR('+STR(@NumbToShow)+')+'' * from ##NotInDB2''
exec (@SelectStr)
end
if @NotInDB1 = 1 and '+STR(@NumbToShow)+' > 0
begin
print ''The row(s) exist in '+@db2+', but do not exist in '+@db1+': ''
set @SelectStr = ''select top ''+STR('+STR(@NumbToShow)+')+'' * from ##NotInDB1''
exec (@SelectStr)
end
exec (''insert into #DiffTables values(''''[''+@Tab+'']'''')'')
end
else
begin
print CHAR(10)+''Data are identical''
exec ('' insert into #IdenticalTables values(''''[''+@Tab+'']'''')'')
end
end
if exists (select * from tempdb.dbo.sysobjects where name like ''##NotInDB1%'')
drop table ##NotInDB1
if exists (select * from tempdb.dbo.sysobjects where name like ''##NotInDB2%'')
drop table ##NotInDB2
NextTab:
fetch next from TabCur into @Tab, @d1User, @d2User
end
deallocate TabCur
'
exec (@SqlStrGetListOfKeys1+@SqlStrGetListOfKeys2+@SqlStrGetListOfColumns+
@SqlStrCompareUKeyTables+@SqlStrCompareNonUKeyTables)
print ' '
SET NOCOUNT OFF
if (select count(*) from #NoPKTables) > 0
begin
select name as 'Table(s) without Unique key:' from #NoPKTables
end
if (select count(*) from #DiffTables) > 0
begin
select name as 'Table(s) with the same name & structure, but different data:' from #DiffTables
end
else
print CHAR(10)+'No tables with the same name & structure, but different data'+CHAR(10)
if (select count(*) from #IdenticalTables) > 0
begin
select name as 'Table(s) with the same name & structure and identical data:' from #IdenticalTables
end
if (select count(*) from #EmptyTables) > 0
begin
select name as 'Table(s) with the same name & structure and empty in the both databases:' from #EmptyTables
end
drop table #TabToCheck
drop table ##CompareStr
drop table #DiffTables
drop table #IdenticalTables
drop table #EmptyTables
drop table #NoPKTables
drop table #IndList1
drop table #IndList2
return
