该脚本使用场景：大规模的修改字段，该脚本只是产生修改的脚本并不会做alter column修改
譬如本实例下不同db不同table总共有1000个字段需要修改
/*
功能描述:
1.批量产生修改表字段脚本
[email protected]设置过滤类型长度相同的修改
3. 考虑因素( default_constraint/check_constraint/index/full_index/statistics)
使用方法:
@filter 设置过滤， @s 输入需要修改的cloumn
潜在问题:数据类型考虑不完全，有可能部分数据类型过滤功能无法使用,这只是根据自己工作需要编写的部分功能
*/
USE master
GO
SET NOCOUNT ON
DECLARE @s varchar(max)
DECLARE @sql varchar(max)
DECLARE @x xml
declare @filter int;
set @filter=0 -- 1:filter ChangeTotype=currenttype 0 do nothing
/*****INPUT*******************
dbname;tbname;columnname;ChangeTotype
*/
/*
mydb;fullindex;cc;varchar(30)
test;fullindex;cb;varchar(30)
test;fullindex;cc;varchar(30)
*/
SET @s = ‘
mydb;fullindex;cc;varchar(30)
test;fullindex;cb;varchar(30)
test;fullindex;cc;varchar(30)
‘
IF OBJECT_ID(‘tempdb.dbo.#lynn_tbinfo‘) IS NOT NULL
DROP TABLE #lynn_tbinfo
CREATE TABLE #lynn_tbinfo
(
ID int identity(1,1) PRIMARY KEY,
DBName varchar(500),
TbName varchar(500),
ColName varchar(500),
ChangeTotype varchar(500),
Size_MB decimal(20,2),
Rows bigint,
currenttype varchar(500),
is_nullable int,
ischaged int,
alterscript nvarchar(max)
)
DECLARE @tt table
(
COL varchar(max)
)
SELECT
@sql = ‘‘,
@s = N‘<root><col>‘ + REPLACE(@s,CHAR(10),N‘</col><col>‘) + N‘</col></root>‘,
@x = CONVERT(xml,@s)
INSERT @tt
SELECT
REPLACE(REPLACE(REPLACE(REPLACE(col,CHAR(10),N‘‘),CHAR(10),N‘‘),CHAR(9),N‘‘),‘;‘,‘.‘) AS COL
FROM
(
SELECT
REPLACE( REPLACE(RTRIM(LTRIM(T.c.value(N‘(text())[1]‘,N‘nvarchar(300)‘))),CHAR(10),N‘‘),‘ ‘,‘‘) AS col
FROM @x.nodes(‘/root/col‘) T(c)
)A
WHERE A.col IS NOT NULL
--
insert into #lynn_tbinfo(DBName,TbName,ColName,ChangeTotype)
SELECT PARSENAME(COL,4),PARSENAME(COL,3),PARSENAME(COL,2),PARSENAME(COL,1) FROM @tt
--SELECT * FROM #lynn_tbinfo
--***get current size & rows & column type begin--
IF OBJECT_ID(‘tempdb.dbo.#getsize‘) IS NOT NULL
DROP TABLE #getsize
create table #getsize
(
dbname varchar(500)
,tbname varchar(500)
,Size_MB decimal(20,2)
,rows bigint
)
if OBJECT_ID(‘tempdb..#currenttype‘,‘U‘) is not null
drop table #currenttype
create table #currenttype(
dbname varchar(200),
tbname varchar(200),
columnname varchar(200),
columntype varchar(200),
columnlength varchar(10),
precision int,
scale int,
currenttype varchar(20),
is_nullable int
)
IF OBJECT_ID(‘tempdb.dbo.#indexinfo‘) IS NOT NULL
DROP TABLE #indexinfo
create table #indexinfo
(
id int identity(1,1) primary key,
dbname varchar(500),
index_ix bigint,
tbname varchar(500),
colname varchar(500),
ix_name varchar(500),
type_desc varchar(50),
is_unique int,
is_primary_key int,
fill_factor int,
has_filter int,
is_disabled int,
filter_definition varchar(2000),
index_column_id int,
is_descending_key int,
is_included_column int,
dropscript nvarchar(max),
createscript nvarchar(max)
)
IF OBJECT_ID(‘tempdb.dbo.#dfinfo‘) IS NOT NULL
DROP TABLE #dfinfo
create table #dfinfo
(
id int identity(1,1) primary key,
dbname varchar(500),
tbname varchar(500),
dfname varchar(500),
definition nvarchar(max),
colname varchar(500),
dropscript nvarchar(max),
createscript nvarchar(max)
)
IF OBJECT_ID(‘tempdb.dbo.#stinfo‘) IS NOT NULL
DROP TABLE #stinfo
create table #stinfo
(
id int identity(1,1) primary key,
dbname varchar(500),
tbname varchar(500),
stname varchar(500),
has_filter int,
filter_definition nvarchar(max),
colname varchar(500),
stats_column_id int,
dropscript nvarchar(max),
createscript nvarchar(max)
)
IF OBJECT_ID(‘tempdb.dbo.#ckinfo‘) IS NOT NULL
DROP TABLE #ckinfo
create table #ckinfo
(
id int identity(1,1) primary key,
dbname varchar(500),
tbname varchar(500),
ckname varchar(500),
colname varchar(500),
definition nvarchar(max),
dropscript nvarchar(max),
createscript nvarchar(max)
)
IF OBJECT_ID(‘tempdb.dbo.#fullindexinfo‘) IS NOT NULL
DROP TABLE #fullindexinfo
create table #fullindexinfo
(
id int identity(1,1) primary key,
dbname varchar(500),
tbname varchar(500),
colname varchar(500),
ix_name varchar(500),
catelogname varchar(500),
is_enabled int,
dropscript nvarchar(max),
createscript nvarchar(max)
)
declare @sizesql1 nvarchar(max),@sizesql2 nvarchar(max)
,@db nvarchar(500),@tb nvarchar(500);
declare @typesqll Nvarchar(max),@typesql2 Nvarchar(max),@colname nvarchar(500);
SELECT @sizesql1=N‘
use {dbname}
insert into #getsize(dbname,tbname,Size_MB,rows)
select ‘‘{dbname}‘‘,‘‘{tbname}‘‘, cast(SUM (reserved_page_count)*8.0/1024 as decimal(20,2)),
SUM ( CASE WHEN (index_id < 2) THEN row_count ELSE 0 END )
from sys.dm_db_partition_stats where object_id = object_id(‘‘{tbname}‘‘)
‘
select @typesqll=N‘
use {dbname}
insert into #currenttype(dbname,tbname,columnname,columntype,columnlength,precision,scale,is_nullable)
select DB_NAME(),OBJECT_NAME(co.object_id) as tbname, co.name as colname, ty.name typename,
length=case
when co.max_length=-1 then ‘‘max‘‘
when ty.name like ‘‘N%‘‘ then cast(co.max_length/2 as varchar(10))
else cast(co.max_length as varchar(10)) end,
co.precision,co.scale,
co.is_nullable
from sys.columns as co with(nolock)
inner join sys.types as ty with(nolock)
on ty.user_type_id=co.user_type_id
inner join sys.tables as t
on t.object_id= co.object_id
where OBJECT_NAME(co.object_id)= ‘‘{tbname}‘‘ and co.name= ‘‘{colname}‘‘
‘
declare @getinfo1 nvarchar(max),@getinfo2 nvarchar(max);
select @getinfo1=N‘use [{db}]
--index
;with ixinfo
as(
select
IX.index_id ,object_name(ix.object_id) tbname ,co.name colname,ix.name ixname,ix.type_desc ,ix.is_unique,ix.is_primary_key,ix.fill_factor,ix.has_filter,ix.is_disabled,ix.filter_definition
,ixc.index_column_id,ixc.is_descending_key,ixc.is_included_column
from sys.indexes as ix with(nolock)
inner join sys.index_columns as ixc with(nolock)
on ixc.object_id=ix.object_id AND IX.index_id=IXC.index_id
inner join sys.columns as co with(nolock)
on co.object_id=ix.object_id and co.column_id=ixc.column_id
)
,ixinfoa
as(
select
distinct ixa.index_id,ixa.ixname,ixa.tbname
from ixinfo as ixa
inner join #lynn_tbinfo as t
on t.DBName=DB_NAME() and t.TbName=ixa.tbname and t.ColName=ixa.colname
)
insert into #indexinfo
select DB_NAME(),ixb.* ,NULL,NULL
from ixinfo as ixb
inner join ixinfoa ixc
on ixc.index_id=ixb.index_id and ixc.tbname=ixb.tbname
order by ixb.tbname, ixb.index_id;
--df
insert into #dfinfo
select
DB_NAME(),OBJECT_NAME(cof.object_id) tbname
,df.name dfname, df.definition,
cof.name colname
,NULL,NULL
FROM sys.default_constraints as df WITH(NOLOCK)
inner join sys.columns as cof WITH(NOLOCK)
on cof.object_id=df.parent_object_id and cof.column_id=df.parent_column_id
inner join #lynn_tbinfo as ldf
on ldf.DBName=DB_NAME() and object_id(ldf.TbName)=cof.object_id and ldf.ColName=cof.name;
--stat
;with stat
as(
SELECT
object_name(cs.object_id) tbname,st.name stname,st.has_filter,st.filter_definition,
cs.name colname,stc.stats_column_id
from sys.stats as st with(nolock)
inner join sys.stats_columns as stc with(nolock)
on st.object_id=stc.object_id and st.stats_id=stc.stats_id
inner join sys.columns cs with(nolock)
on cs.object_id=st.object_id and cs.column_id=stc.column_id and st.user_created=1
)
,stat2
as(
select distinct s1.tbname, s1.stname from stat as s1
inner join #lynn_tbinfo as ls
on ls.DBName=DB_NAME() and ls.TbName=s1.tbname and ls.ColName=s1.colname
)
insert into #stinfo
select DB_NAME(),s2.*
,NULL,NULL
from stat as s2
inner join stat2 s3
on s3.tbname=s2.tbname and s3.stname=s2.stname ;
--check
insert into #ckinfo
SELECT DB_NAME(),
OBJECT_NAME(cc.object_id) tbname,ck.name ckname,cc.name colname,ck.definition
,NULL,NULL
FROM SYS.check_constraints as ck with(nolock)
inner join sys.columns as cc with(nolock)
on cc.object_id=ck.parent_object_id and cc.column_id=ck.parent_column_id
inner join #lynn_tbinfo lc
on lc.dbname=DB_NAME() and object_id(lc.tbname)=cc.object_id and lc.colname=cc.name;
insert into #fullindexinfo
select
DB_NAME(),OBJECT_NAME(fi.object_id) tbname,fcl.name colname,fix.name ix_name,fc.name catelogname,fi.is_enabled
,NULL,NULL
from sys.fulltext_indexes as fi with(nolock)
inner join sys.fulltext_index_columns as fic with(nolock)
on fic.object_id=fi.object_id
inner join sys.fulltext_index_catalog_usages as ficu with(nolock)
on ficu.object_id=fi.object_id
inner join sys.fulltext_catalogs as fc with(nolock)
on fc.fulltext_catalog_id=ficu.fulltext_catalog_id
inner join sys.indexes as fix with(nolock)
on fix.object_id=fi.object_id and fix.index_id= fi.unique_index_id
inner join sys.columns as fcl with(nolock)
on fcl.object_id=fi.object_id and fcl.column_id= fic.column_id
where exists(
select top(1) 1 from #lynn_tbinfo flcc with(nolock)
where flcc.DBName=DB_NAME() and object_id(flcc.TbName)=fi.object_id and flcc.ColName=fcl.name
)
or exists(
select top(1) 1 from #indexinfo flix with(nolock)
where flix.DBName=DB_NAME() and flix.tbname=OBJECT_NAME(fi.object_id) and flix.ix_name=fix.name
);
--inner join #lynn_tbinfo flcc with(nolock)
-- on flcc.DBName=DB_NAME() and object_id(flcc.TbName)=fi.object_id and flcc.ColName=fcl.name;
‘
DECLARE lynncursor CURSOR LOCAL STATIC FORWARD_ONLY READ_ONLY
FOR
SELECT distinct DBName from #lynn_tbinfo with(nolock)
OPEN lynncursor
FETCH NEXT FROM lynncursor INTO @db
WHILE @@fetch_status = 0
BEGIN
select @getinfo2= REPLACE(@getinfo1,‘{db}‘,@db)
EXECUTE sp_executesql @getinfo2;
DECLARE lynncursor2 CURSOR LOCAL STATIC FORWARD_ONLY READ_ONLY
FOR
SELECT distinct TbName from #lynn_tbinfo with(nolock) where dbname=@db
OPEN lynncursor2
FETCH NEXT FROM lynncursor2 INTO @tb
WHILE @@fetch_status = 0
BEGIN
select @sizesql2=‘‘
select @sizesql2=replace( replace (@sizesql1,‘{dbname}‘,@db),‘{tbname}‘,@tb)
exec sp_executesql @sizesql2
DECLARE lynncursor3 CURSOR LOCAL STATIC FORWARD_ONLY READ_ONLY
FOR
SELECT distinct colname from #lynn_tbinfo with(nolock) where dbname= @db and tbname=@tb
OPEN lynncursor3
FETCH NEXT FROM lynncursor3 INTO @colname
WHILE @@fetch_status = 0
BEGIN
select @typesql2= REPLACE(REPLACE( REPLACE(@typesqll,‘{dbname}‘,@db), ‘{tbname}‘,@tb ),‘{colname}‘,@colname)
EXECUTE sp_executesql @typesql2;
FETCH NEXT FROM lynncursor3 INTO @colname
END
CLOSE lynncursor3
DEALLOCATE lynncursor3
FETCH NEXT FROM lynncursor2 INTO @tb
END
CLOSE lynncursor2
DEALLOCATE lynncursor2
FETCH NEXT FROM lynncursor INTO @db
END
CLOSE lynncursor
DEALLOCATE lynncursor
update #currenttype
set currenttype=case
when columntype IN(‘varchar‘,‘nvarchar‘,‘char‘,‘nchar‘,‘binary‘) then columntype+‘(‘+CAST(columnlength AS varchar(10))+‘)‘
when columntype IN (‘decimal‘) then columntype+‘(‘+CAST(precision AS varchar(10))+‘,‘+CAST(scale AS varchar(10))+‘)‘
else columntype
end
--update currenttype into #lynn_tbinfo
update ii
set ii.currenttype=c.currenttype
,ii.is_nullable=c.is_nullable
,ii.ischaged= case when ii.ChangeTotype=c.currenttype then 1 else 0 end
from #lynn_tbinfo as ii
inner join #currenttype as c
on ii.dbname=c.dbname and ii.tbname=c.tbname and ii.ColName=c.columnname
--update size & rows into #lynn_tbinfo
update i
set i.Size_MB=g.Size_MB
,i.Rows=g.rows
from #lynn_tbinfo as i
inner join #getsize as g
on i.dbname=g.dbname and i.tbname=g.tbname
IF OBJECT_ID(‘tempdb.dbo.#getsize‘) IS NOT NULL
DROP TABLE #getsize
IF OBJECT_ID(‘tempdb.dbo.#currenttype‘) IS NOT NULL
DROP TABLE #currenttype
IF OBJECT_ID(‘tempdb.dbo.#lynn_result‘) IS NOT NULL
DROP TABLE #lynn_result
CREATE TABLE #lynn_result
(
ID int identity(1,1) PRIMARY KEY,
DBName varchar(500),
TbName varchar(500),
Size_MB decimal(20,2),
Rows int,
inputcolumns int,
altercolumns int,
dropscript nvarchar(max),
alterscript nvarchar(max),
addscript nvarchar(max)
)
insert into #lynn_result(DBName,TbName,inputcolumns)
select DBName,TbName,count(1) as colcount from #lynn_tbinfo
group by DBName,TbName
--select * from #lynn_result
if @filter=1
delete #lynn_tbinfo where ischaged=1
;with co (DBName,TbName,colcount)
as(
select DBName,TbName,count(1) as colcount from #lynn_tbinfo
group by DBName,TbName
)
update r
set altercolumns= isnull(co.colcount,0)
from #lynn_result as r
left join co
on co.dbname=r.dbname and co.tbname=r.tbname
update #lynn_tbinfo
set alterscript=‘ALTER TABLE DBO.[‘+TbName+‘] ALTER COLUMN [‘+colname+‘] ‘+ changetotype+‘ ‘+ REPLACE(REPLACE(is_nullable,0,‘NOT‘),1,‘‘) + ‘ NULL‘
update #indexinfo
set dropscript=
case when is_primary_key=1
then ‘if exists( select top(1) 1 from sys.indexes with(nolock) where object_id=object_id(‘‘‘+tbname+‘‘‘) and name=‘‘‘+ix_name+‘‘‘)‘
+char(10)+‘ ALTER TABLE DBO.[‘+tbname+‘] DROP CONSTRAINT [‘+ix_name+‘]‘
else ‘if exists( select top(1) 1 from sys.indexes with(nolock) where object_id=object_id(‘‘‘+tbname+‘‘‘) and name=‘‘‘+ix_name+‘‘‘)‘
+char(10)+‘ DROP INDEX [‘+ix_name+‘] ON dbo.[‘+tbname+‘]‘
end
,createsCript= ‘if not exists( select top(1) 1 from sys.indexes with(nolock) where object_id=object_id(‘‘‘+tbname+‘‘‘) and name=‘‘‘+ix_name+‘‘‘)‘
+char(10)+
case when is_primary_key=1
then ‘ ALTER TABLE dbo.[‘+tbname+‘] ADD CONSTRAINT [‘+ix_name+‘] PRIMARY KEY ‘+ type_desc
else ‘ CREATE ‘+case when is_unique=1 then ‘ UNIQUE ‘ ELSE ‘‘ END
+type_desc+‘ INDEX [‘+ix_name+‘] ON DBO.[‘+tbname+‘]‘
end
;
update #stinfo
set dropscript=‘if exists( select top(1) 1 from sys.stats with(nolock) where name=‘‘‘+stname+‘‘‘ and object_id=object_id(‘‘‘+tbname+‘‘‘) )‘
+char(10)+‘ DROP STATISTICS dbo.[‘+tbname+‘].[‘+stname+‘]‘
,createsCript=‘if not exists( select top(1) 1 from sys.stats with(nolock) where name=‘‘‘+stname+‘‘‘ and object_id=object_id(‘‘‘+tbname+‘‘‘) )‘
+char(10)+‘ CREATE STATISTICS [‘+stname+‘] ON DBO.[‘+tbname+‘]‘
update #dfinfo
set dropscript=‘if exists( select top(1) 1 from sys.default_constraints with(nolock) where parent_object_id=object_id(‘‘‘+tbname+‘‘‘) and name=‘‘‘+dfname+‘‘‘ )‘
+char(10)+‘ ALTER TABLE DBO.[‘+tbname+‘] DROP CONSTRAINT [‘+dfname+‘]‘
,createsCript=‘if not exists( select top(1) 1 from sys.default_constraints with(nolock) where parent_object_id=object_id(‘‘‘+tbname+‘‘‘) and name=‘‘‘+dfname+‘‘‘ )‘
+char(10)+‘ ALTER TABLE DBO.[‘+tbname+‘] ADD CONSTRAINT [‘+dfname+‘] DEFAULT ‘+[definition]+‘ FOR [‘+colname+‘]‘;
update #ckinfo
set dropscript=‘if exists( select top(1) 1 from sys.check_constraints with(nolock) where parent_object_id=object_id(‘‘‘+tbname+‘‘‘) and name=‘‘‘+ckname+‘‘‘ )‘
+char(10)+‘ ALTER TABLE DBO.[‘+tbname+‘] DROP CONSTRAINT [‘+ckname+‘]‘
,createsCript=‘if not exists( select top(1) 1 from sys.check_constraints with(nolock) where parent_object_id=object_id(‘‘‘+tbname+‘‘‘) and name=‘‘‘+ckname+‘‘‘ )‘
+char(10)+‘ ALTER TABLE DBO.[‘+tbname+‘] ADD CONSTRAINT [‘+ckname+‘] CHECK ‘+ [definition] ;
UPDATE #fullindexinfo
SET dropscript=‘DROP FULLTEXT INDEX ON DBO.[‘+tbname+‘]‘
,createsCript=‘CREATE FULLTEXT INDEX ON DBO.[‘+tbname+‘]([‘+ colname + ‘]) KEY INDEX ‘+ix_name;
--SELECT * FROM #lynn_tbinfo
--select ‘index‘,* from #indexinfo order by dbname,tbname,ix_name
--select ‘df‘,* from #dfinfo
--select ‘sta‘,* from #stinfo
--select ‘check‘,* from #ckinfo
--select ‘fullindex‘,* from #fullindexinfo
DECLARE @db4 varchar(500),@tb4 varchar(500),@ixname varchar(500),@stname varchar(500);
DECLARE @list varchar(2000),@includelist varchar(2000),@filtersql varchar(2000),@withsql varchar(2000)
,@totalsql VARCHAR(MAX);
DECLARE lynncursor4 CURSOR LOCAL STATIC FORWARD_ONLY READ_ONLY
FOR
select distinct dbname,tbname from #lynn_tbinfo with(nolock)
OPEN lynncursor4
FETCH NEXT FROM lynncursor4 INTO @db4, @tb4
WHILE @@fetch_status = 0
BEGIN
--ix
DECLARE lynncursor5 CURSOR LOCAL STATIC FORWARD_ONLY READ_ONLY
FOR
select distinct ix_name from #indexinfo with(nolock) where dbname=@db4 and tbname=@tb4
OPEN lynncursor5
FETCH NEXT FROM lynncursor5 INTO @ixname
WHILE @@fetch_status = 0
BEGIN
select @list=‘‘,@includelist=‘‘,@filtersql=‘‘,@withsql=‘‘,@totalsql=‘‘;
select @list=@list+‘,‘+‘[‘+colname+‘]‘+ case is_descending_key when 1 then ‘ DESC‘ ELSE ‘ ASC‘ END
from #indexinfo where dbname=@db4 and tbname=@tb4 and ix_name =@ixname and is_included_column=0
order by index_column_id
select @includelist=@includelist+‘,‘+‘[‘+colname+‘]‘
from #indexinfo where dbname=@db4 and tbname=@tb4 and ix_name =@ixname and is_included_column=1
order by index_column_id
select @list=‘(‘+SUBSTRING(@list,2,5000)+‘)‘
select @includelist=‘(‘+SUBSTRING(@includelist,2,5000)+‘)‘
IF @includelist=‘()‘
SELECT @includelist=‘‘
select top(1) @filtersql=filter_definition from #indexinfo
where dbname=@db4 and tbname=@tb4 and ix_name =@ixname and filter_definition is not null
select top(1) @withsql= ‘WITH (FILLFACTOR=‘+CAST(fill_factor AS VARCHAR(3))+‘)‘ from #indexinfo
where dbname=@db4 and tbname=@tb4 and ix_name =@ixname AND fill_factor<>0
--select @ixname,@ixlist,@includelist,@wheresql,@withsql
select @totalsql=CHAR(10)+‘ ‘+@list+case when @includelist<>‘‘ then ‘ INCLUDE ‘+ @includelist ELSE ‘‘ END
+case when @filtersql<>‘‘ then ‘ WHERE ‘+ @filtersql ELSE ‘‘ END
+@withsql
--SELECT @ixsql
UPDATE #indexinfo
SET createsCript=createsCript+@totalsql
WHERE dbname=@db4 and tbname=@tb4 and ix_name =@ixname
FETCH NEXT FROM lynncursor5 INTO @ixname
END
CLOSE lynncursor5
DEALLOCATE lynncursor5
DECLARE lynncursor6 CURSOR LOCAL STATIC FORWARD_ONLY READ_ONLY
FOR
select distinct stname from #stinfo with(nolock) where dbname=@db4 and tbname=@tb4
OPEN lynncursor6
FETCH NEXT FROM lynncursor6 INTO @stname
WHILE @@fetch_status = 0
BEGIN
SELECT @list=‘‘,@filtersql=‘‘,@totalsql=‘‘
SELECT @list=@list+‘,‘+‘[‘+colname+‘]‘ from #stinfo where dbname=@db4 and tbname=@tb4 and stname=@stname order by stats_column_id
SELECT @list=‘(‘+SUBSTRING(@list,2,5000)+‘)‘
--select @list
select top(1) @filtersql=filter_definition from #stinfo where dbname=@db4 and tbname=@tb4 and stname=@stname and has_filter=1
--SELECT @filtersql
SELECT @totalsql=‘ ‘+@list+case when @filtersql<>‘‘ then ‘ WHERE ‘+ @filtersql ELSE ‘‘ END
--SELECT @totalsql
UPDATE #stinfo
SET createsCript=createsCript+@totalsql
WHERE dbname=@db4 and tbname=@tb4 and stname =@stname
FETCH NEXT FROM lynncursor6 INTO @stname
END
CLOSE lynncursor6
DEALLOCATE lynncursor6
FETCH NEXT FROM lynncursor4 INTO @db4, @tb4
END
CLOSE lynncursor4
DEALLOCATE lynncursor4
DECLARE @fdb varchar(500),@ftb varchar(500), @fSize_MB decimal(20,2), @fRows bigint ;
DECLARE @dropsql nvarchar(max),@altersql nvarchar(max),@addsql nvarchar(max);
DECLARE @tempcounter varchar(20);
DECLARE lynn CURSOR LOCAL STATIC FORWARD_ONLY READ_ONLY
FOR
SELECT DBName,TbName,Size_MB,[Rows] from #lynn_tbinfo with(nolock)
group by DBName,TbName,Size_MB,[Rows]
order by DBName,TbName,Size_MB,[Rows]
OPEN lynn
FETCH NEXT FROM lynn INTO @fdb ,@ftb,@fSize_MB,@fRows
WHILE @@fetch_status = 0
BEGIN
--Put your code here to use @your_variable
select @altersql=‘‘,@dropsql=‘‘,@addsql=‘‘;
--drop full index
if exists (select top(1) 1 from #fullindexinfo where dbname=@fdb and tbname=@ftb )
begin
select @dropsql=@dropsql+‘--***** drop full index *****‘+char(10)
select @dropsql=@dropsql+dropscript+char(10) from #fullindexinfo where dbname=@fdb and tbname=@ftb;
end
--drop index
if exists(select top(1) 1 from #indexinfo where dbname=@fdb and tbname=@ftb )
begin
select @dropsql=@dropsql+‘--***** drop index *****‘+char(10)
;with lynnix
as( select distinct ix_name,type_desc,dropscript from #indexinfo where dbname=@fdb and tbname=@ftb)
select @dropsql=@dropsql+dropscript+char(10)
from lynnix order by type_desc desc
end
--drop sta
if exists (select top(1) 1 from #stinfo where dbname=@fdb and tbname=@ftb )
begin
select @dropsql=@dropsql+‘--***** drop state *****‘+char(10)
;with lynnst
as(select distinct dropscript from #stinfo where dbname=@fdb and tbname=@ftb )
select @dropsql=@dropsql+dropscript+char(10) from lynnst
end
--drop check
if exists (select top(1) 1 from #ckinfo where dbname=@fdb and tbname=@ftb )
begin
select @dropsql=@dropsql+‘--***** drop check *****‘+char(10)
select @dropsql=@dropsql+dropscript+char(10) from #ckinfo where dbname=@fdb and tbname=@ftb
end
--drop default
if exists (select top(1) 1 from #dfinfo where dbname=@fdb and tbname=@ftb )
begin
select @dropsql=@dropsql+‘--***** drop default *****‘+char(10)
select @dropsql=@dropsql+dropscript+char(10) from #dfinfo where dbname=@fdb and tbname=@ftb;
end
--drop full index
--if exists (select top(1) 1 from #fullindexinfo where [email protected] and [email protected] )
--begin
-- select @[email protected]+char(10)+‘--***** drop full index *****‘
-- select @[email protected]+char(10)+dropscript from #fullindexinfo where [email protected] and [email protected];
--end
--alter column
select @altersql=@altersql+‘--***** alter column *****‘+char(10)
select @tempcounter =cast( count(1) as varchar(20)) from #lynn_tbinfo where dbname=@fdb and tbname=@ftb
;with lynnalter
as(
select
tbname,colname,alterscript,ROW_NUMBER() OVER(ORDER BY colname ) as id,@tempcounter as coun
from #lynn_tbinfo
where dbname=@fdb and tbname=@ftb
),lynnalter1
as(
select *,‘t‘+CAST(id as varchar(20))+‘a‘ as t1, ‘t‘+CAST(id as varchar(20))+‘b‘ as t2 from lynnalter
)
select @altersql = @altersql+
‘declare @‘+t1+‘ datetime=getdate(),@‘+t2+‘ varchar(20)‘
+char(10)+alterscript+char(10)
+‘select @‘+t2+‘=cast( cast( DATEDIFF(second ,@‘+t1+‘,getdate())/60.0 as decimal(12,1) ) as varchar(20))‘
+char(10)+‘RAISERROR(‘‘Col[‘+cast(coun as varchar(20))+‘/‘+cast(id as varchar(20))+‘]: [‘+[colname] +‘] is done. %s minutes‘‘,10,1,@‘+t2+‘) WITH NOWAIT ‘+char(10)+‘GO‘+char(10)
from lynnalter1
--add df
if exists (select top(1) 1 from #dfinfo where dbname=@fdb and tbname=@ftb )
begin
select @addsql=@addsql+‘--***** add default *****‘+char(10)
select @addsql=@addsql+createscript+char(10) from #dfinfo where dbname=@fdb and tbname=@ftb;
end
--add ck
if exists (select top(1) 1 from #ckinfo where dbname=@fdb and tbname=@ftb )
begin
select @addsql=@addsql+‘--***** add check *****‘+char(10)
select @addsql=@addsql+createscript+char(10) from #ckinfo where dbname=@fdb and tbname=@ftb
end
--add index
if exists(select top(1) 1 from #indexinfo where dbname=@fdb and tbname=@ftb )
begin
select @addsql=@addsql+‘--***** add index *****‘+char(10)
--;with lynnix
--as( select distinct ix_name,type_desc,createscript from #indexinfo where [email protected] and [email protected])
--select @[email protected]+char(10)+createscript
--from lynnix order by type_desc
select @tempcounter=cast( count(1) as varchar(20))
from (select distinct dbname, ix_name from #indexinfo where dbname=@fdb and tbname=@ftb
) as aa
;with ly
as
( select distinct ix_name,type_desc,createscript
from #indexinfo where dbname=@fdb and tbname=@ftb
)
,lynnix
as(
select ix_name,type_desc,createscript,ROW_NUMBER() OVER(ORDER BY type_desc ) as id,@tempcounter as coun
from ly )
,lynnix1
as(select *,‘t‘+cast(id as varchar(10))+‘a‘ as t1, ‘t‘+cast(id as varchar(10))+‘b‘ as t2 from lynnix
)
select @addsql=@addsql+
‘declare @‘+t1+‘ datetime=getdate(),@‘+t2+‘ varchar(20)‘
+char(10)+createscript+char(10)
+‘select @‘+t2+‘=cast( cast( DATEDIFF(second ,@‘+t1+‘,getdate())/60.0 as decimal(12,1) ) as varchar(20))‘
+char(10)+‘RAISERROR(‘‘IX[‘+cast(coun as varchar(20))+‘/‘+cast(id as varchar(20))+‘]: [‘+ix_name +‘] is done. %s minutes‘‘,10,1,@‘+t2+‘) WITH NOWAIT ‘+char(10)+‘GO‘+char(10)
from lynnix1 order by type_desc
end
--add sta
if exists (select top(1) 1 from #stinfo where dbname=@fdb and tbname=@ftb )
begin
select @addsql=@addsql+‘--***** add state *****‘+char(10)
;with lynnst
as(select distinct createscript from #stinfo where dbname=@fdb and tbname=@ftb )
select @addsql=@addsql+createscript+char(10) from lynnst
end
--add full index
if exists (select top(1) 1 from #fullindexinfo where dbname=@fdb and tbname=@ftb )
begin
select @addsql=@addsql+‘--***** add full index *****‘+char(10)
select @addsql=@addsql+createscript+char(10) from #fullindexinfo where dbname=@fdb and tbname=@ftb;
end
--select @dropsql,@altersql,@addsql
update #lynn_result
set Size_MB=@fSize_MB,
Rows=@fRows,
dropscript=@dropsql, alterscript=@altersql, addscript=@addsql
where dbname=@fdb and tbname =@ftb;
FETCH NEXT FROM lynn INTO @fdb ,@ftb,@fSize_MB,@fRows
END
CLOSE lynn
DEALLOCATE lynn
DECLARE @engine varchar(2)
DECLARE @rebuild varchar(10)
SELECT @engine = CONVERT(varchar(2),SERVERPROPERTY(‘EngineEdition‘))
IF @engine = 3
SET @rebuild = ‘ON‘
ELSE
SET @rebuild = ‘OFF‘
select
DBName,TbName,Size_MB,Rows,inputcolumns,altercolumns,
alter_script=
‘RAISERROR(‘‘=====Processing table:‘+tbname+‘,‘+cast(Size_MB as varchar(20))+ ‘ MB,‘+CAST(Rows as varchar(20))+‘ Rows============‘‘,10,1) WITH NOWAIT ‘
+char(10)+char(10)+‘/***** drop *****/‘+char(10)+‘USE [‘+DBName+‘]‘
+char(10)+dropscript
+char(10)+char(10)+‘/***** alter *****/‘+char(10)+‘USE [‘+DBName+‘]‘
+char(10)+alterscript
+char(10)+char(10)+‘/***** add *****/‘+char(10)+‘USE [‘+DBName+‘]‘
+char(10)+addscript
+case when Size_MB*1.0/1024>1.0 then ‘ declare @ta datetime=getdate(),@tb varchar(20)‘
+char(10)+ ‘ALTER INDEX ALL ON ‘+TbName+‘ REBUILD WITH(ONLINE=‘+@rebuild+‘)‘
+char(10)+‘select @tb=cast( cast( DATEDIFF(second ,@ta,getdate())/60.0 as decimal(12,1) ) as varchar(20))‘
+char(10)+‘RAISERROR(‘‘Rebuild is done. %s minutes‘‘,10,1,@tb) WITH NOWAIT‘
else ‘‘ end
+char(10)+char(10)+‘RAISERROR(‘‘=====End Process table:‘+tbname+‘============‘‘,10,1) WITH NOWAIT ‘
,dropscript,alterscript,addscript
from #lynn_result
order by dbname
IF OBJECT_ID(‘tempdb.dbo.#getsize‘) IS NOT NULL
DROP TABLE #getsize
if OBJECT_ID(‘tempdb..#currenttype‘,‘U‘) is not null
drop table #currenttype
IF OBJECT_ID(‘tempdb.dbo.#indexinfo‘) IS NOT NULL
DROP TABLE #indexinfo
IF OBJECT_ID(‘tempdb.dbo.#dfinfo‘) IS NOT NULL
DROP TABLE #dfinfo
IF OBJECT_ID(‘tempdb.dbo.#stinfo‘) IS NOT NULL
DROP TABLE #stinfo
IF OBJECT_ID(‘tempdb.dbo.#ckinfo‘) IS NOT NULL
DROP TABLE #ckinfo
IF OBJECT_ID(‘tempdb.dbo.#fullindexinfo‘) IS NOT NULL
DROP TABLE #fullindexinfo
IF OBJECT_ID(‘tempdb.dbo.#lynn_tbinfo‘) IS NOT NULL
DROP TABLE #lynn_tbinfo
IF OBJECT_ID(‘tempdb.dbo.#lynn_result‘) IS NOT NULL
DROP TABLE #lynn_result
时间： 2024-10-24 22:07:54