数据库存储空间查询(数据库的大小及数据库中各个表的数据量和每行记录大小)
IF NOT EXISTS (SELECT * FROM dbo.sysobjects WHERE id = Object_id(N‘[dbo].[tablespaceinfo]‘) AND Objectproperty(id, N‘IsUserTable‘) = 1) CREATE TABLE tablespaceinfo --创建结果存储表 ( nameinfo VARCHAR(50), rowsinfo INT, reserved VARCHAR(20), datainfo VARCHAR(20), index_size VARCHAR(20), unused VARCHAR(20) ) DELETE FROM tablespaceinfo --清空数据表 DECLARE @tablename VARCHAR(255) --表名称 DECLARE @cmdsql VARCHAR(500) DECLARE Info_cursor CURSOR FOR SELECT o.name FROM dbo.sysobjects o WHERE Objectproperty(o.id, N‘IsTable‘) = 1 AND o.name NOT LIKE N‘#%%‘ ORDER BY o.name OPEN Info_cursor FETCH NEXT FROM Info_cursor INTO @tablename WHILE @@FETCH_STATUS = 0 BEGIN IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = Object_id(@tablename) AND Objectproperty(id, N‘IsUserTable‘) = 1) EXECUTE Sp_executesql N‘insert into tablespaceinfo exec sp_spaceused @tbname‘, N‘@tbname varchar(255)‘, @tbname = @tablename FETCH NEXT FROM Info_cursor INTO @tablename END CLOSE Info_cursor DEALLOCATE Info_cursor GO --itlearner注:显示数据库信息 Sp_spaceused @updateusage = ‘TRUE‘ --itlearner注:显示表信息 SELECT * FROM tablespaceinfo ORDER BY Cast(LEFT(Ltrim(Rtrim(reserved)), Len(Ltrim(Rtrim(reserved))) - 2) AS INT) DESC
数据库中各个表的数据量和每行记录所占用空间
CREATE TABLE #tablespaceinfo ( nameinfo VARCHAR(500), rowsinfo BIGINT, reserved VARCHAR(20), datainfo VARCHAR(20), index_size VARCHAR(20), unused VARCHAR(20) ) DECLARE @tablename VARCHAR(255); DECLARE Info_cursor CURSOR FOR SELECT ‘[‘ + [name] + ‘]‘ FROM sys.tables WHERE type = ‘U‘; OPEN Info_cursor FETCH NEXT FROM Info_cursor INTO @tablename WHILE @@FETCH_STATUS = 0 BEGIN INSERT INTO #tablespaceinfo EXEC Sp_spaceused @tablename FETCH NEXT FROM Info_cursor INTO @tablename END CLOSE Info_cursor DEALLOCATE Info_cursor --创建临时表 CREATE TABLE [#tmptb] ( TableName VARCHAR(50), DataInfo BIGINT, RowsInfo BIGINT, Spaceperrow AS ( CASE RowsInfo WHEN 0 THEN 0 ELSE DataInfo / RowsInfo END ) PERSISTED ) --插入数据到临时表 INSERT INTO [#tmptb] ([TableName], [DataInfo], [RowsInfo]) SELECT [nameinfo], Cast(Replace([datainfo], ‘KB‘, ‘‘) AS BIGINT) AS ‘datainfo‘, [rowsinfo] FROM #tablespaceinfo ORDER BY Cast(Replace(reserved, ‘KB‘, ‘‘) AS INT) DESC --汇总记录 SELECT [tbspinfo].*, [tmptb].[Spaceperrow] AS ‘每行记录大概占用空间(KB)‘ FROM [#tablespaceinfo] AS tbspinfo, [#tmptb] AS tmptb WHERE [tbspinfo].[nameinfo] = [tmptb].[TableName] ORDER BY Cast(Replace([tbspinfo].[reserved], ‘KB‘, ‘‘) AS INT) DESC DROP TABLE [#tablespaceinfo] DROP TABLE [#tmptb]
数据库死锁与阻塞语句查询
/* 功能说明: 数据库死锁与阻塞语句查询 修改说明:Modfiy BY LY 2013-11-22 */ DECLARE @spid INT DECLARE @blk INT DECLARE @count INT DECLARE @index INT DECLARE @lock TINYINT SET @lock=0 CREATE TABLE #temp_who_lock ( id INT IDENTITY(1, 1), spid INT, blk INT ) --if @@error<>0 return @@error INSERT INTO #temp_who_lock (spid, blk) SELECT 0, blocked FROM (SELECT * FROM master..sysprocesses WHERE blocked > 0)a WHERE NOT EXISTS(SELECT * FROM master..sysprocesses WHERE a.blocked = spid AND blocked > 0) UNION SELECT spid, blocked FROM master..sysprocesses WHERE blocked > 0 --if @@error<>0 return @@error SELECT @count = Count(*), @index = 1 FROM #temp_who_lock --select @count,@index --if @@error<>0 return @@error IF @count = 0 BEGIN SELECT ‘没有阻塞和死锁信息‘ --return 0 END WHILE @index <= @count BEGIN IF EXISTS(SELECT 1 FROM #temp_who_lock a WHERE id > @index AND EXISTS(SELECT 1 FROM #temp_who_lock WHERE id <= @index AND a.blk = spid)) BEGIN SET @lock=1 SELECT @spid = spid, @blk = blk FROM #temp_who_lock WHERE id = @index SELECT ‘引起数据库死锁的是: ‘ + Cast(@spid AS VARCHAR(10)) + ‘进程号,其执行的SQL语法如下‘ ; SELECT @spid, @blk DBCC inputbuffer(@spid) DBCC inputbuffer(@blk) END SET @[email protected] + 1 END IF @lock = 0 BEGIN SET @index=1 WHILE @index <= @count BEGIN SELECT @spid = spid, @blk = blk FROM #temp_who_lock WHERE id = @index IF @spid = 0 SELECT ‘引起阻塞的是:‘ + Cast(@blk AS VARCHAR(10)) + ‘进程号,其执行的SQL语法如下‘ ELSE SELECT ‘进程号SPID:‘ + Cast(@spid AS VARCHAR(10)) + ‘被‘ + ‘进程号SPID:‘ + Cast(@blk AS VARCHAR(10)) + ‘阻塞,其当前进程执行的SQL语法如下‘ PRINT ( LTRIM(@spid) + ‘‘+ LTRIM(@blk)); if(@spid <> 0) BEGIN DBCC inputbuffer(@spid) -- END DBCC inputbuffer(@blk) --引起阻塞语句 SET @[email protected] + 1 END END DROP TABLE #temp_who_lock --return 0 --KILL 54
收缩当前的数据库,并清除对应的日志文件
/* 功能说明:收缩当前的数据库,并清除对应的日志文件 逻辑说明:首先收缩数据库,其次设置数据库为简单模式,然后在截取日志文件, 设置它为固定大小,最后设置数据库为它当前的模式 SHRINKFILE 可以指定收缩日志的大小 TRUNCATEONLY 只适用于数据文件的收缩。 清除日志说明:当系统的日志文件异常增大或者备份LOG时间太长可能影响生产的情况下使用。 修改说明:Create by LY on 2011-12-06 */ DECLARE @DB_Name VARCHAR(50), --当前数据库名称 @DBLog_Name VARCHAR(50), --日志文件 @DBRecovery_Model VARCHAR(50); --恢复模型 SELECT @DBLog_Name = s.name FROM sys.master_files AS s WHERE ( s.type = 1 AND s.database_id = DB_ID()) SELECT @DB_Name = DB_NAME(); SELECT @DBRecovery_Model = recovery_model_desc FROM master.sys.databases WHERE name = DB_NAME(); DBCC SHRINKDATABASE(@DB_Name); -----收缩主数据库 EXEC(‘ALTER DATABASE ‘[email protected]_Name+‘ SET RECOVERY SIMPLE;‘); --Truncate the log by changing the database recovery model to SIMPLE. DBCC SHRINKFILE (@DBLog_Name); -- Shrink the truncated log file to 50 MB. EXEC(‘ALTER DATABASE ‘[email protected]_Name+‘ SET RECOVERY ‘[email protected]_Model+‘;‘); --Reset the database recovery model. GO /* 功能说明:查看数据库的恢复模型 修改说明:Create by LY on 2011-12-06 */ --SELECT name,recovery_model_desc --FROM master.sys.databases --select * from sysfiles
一个完整的表分区案例
USE CubeDemo GO /* 功能说明: 创建表分区测试表 修改说明: Create by LY on 2011-09-11 */ IF EXISTS (SELECT 1 FROM SYSOBJECTS WHERE id = OBJECT_ID(‘Fact_SaleCar‘) AND type = ‘U‘) BEGIN DROP TABLE Fact_SaleCar END GO CREATE TABLE [dbo].Fact_SaleCar ( SaleCarId VARCHAR(20) NOT NULL, SaleName VARCHAR(50) NULL, CheckOutDate DATETIME NULL, Attribute1 VARCHAR(50) NULL, Attribute2 VARCHAR(50) NULL, Attribute3 VARCHAR(50) NULL, Attribute4 VARCHAR(50) NULL, Attribute5 VARCHAR(50) NULL, Attribute6 VARCHAR(50) NULL, Attribute7 VARCHAR(50) NULL, Attribute8 VARCHAR(50) NULL, Attribute9 VARCHAR(50) NULL, Attribute10 VARCHAR(50) NULL, Attribute11 VARCHAR(50) NULL, Attribute12 VARCHAR(50) NULL, CONSTRAINT PK_Fact_SaleCar PRIMARY key (SaleCarId) ); GO /* 功能说明: 用循环加入测试数据 修改说明: Create by LY on 2011-09-11 */ BEGIN BEGIN TRAN ---开始事务 DECLARE @NUM INT; SET @NUM=1; /*-------2009年的时间导入 【800万条】---- */ WHILE @NUM <= 8000000 BEGIN INSERT INTO dbo.Fact_SaleCar SELECT RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+RTRIM(@NUM),‘商店‘+RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+RTRIM(@NUM),DATEADD(YEAR,-2,GETDATE()), RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+‘01‘,RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+‘02‘, RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+‘03‘,RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+‘04‘, RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+‘05‘,RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+‘06‘, RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+‘07‘,RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+‘08‘, RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+‘09‘,RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+‘10‘, RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+‘11‘,RTRIM(YEAR(DATEADD(YEAR,-2,GETDATE())))+‘12‘; SET @[email protected]+1; IF @@error<>0 BEGIN ROLLBACK TRAN RETURN; END END; SET @NUM=1 /*-------2010年的时间导入 【500万】---- */ WHILE @NUM <= 5000000 BEGIN INSERT INTO dbo.Fact_SaleCar SELECT RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+RTRIM(@NUM),‘商店‘+RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+RTRIM(@NUM),DATEADD(YEAR,-1,GETDATE()), RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+‘01‘,RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+‘02‘, RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+‘03‘,RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+‘04‘, RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+‘05‘,RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+‘06‘, RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+‘07‘,RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+‘08‘, RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+‘09‘,RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+‘10‘, RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+‘11‘,RTRIM(YEAR(DATEADD(YEAR,-1,GETDATE())))+‘12‘; SET @[email protected]+1; IF @@error<>0 BEGIN ROLLBACK TRAN RETURN; END END; SET @NUM=1 /*-------2011年的时间导入 【1000万】---- */ WHILE @NUM <= 10000000 BEGIN INSERT INTO dbo.Fact_SaleCar SELECT RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+RTRIM(@NUM),‘商店‘+RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+RTRIM(@NUM),DATEADD(YEAR,0,GETDATE()), RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+‘01‘,RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+‘02‘, RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+‘03‘,RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+‘04‘, RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+‘05‘,RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+‘06‘, RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+‘07‘,RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+‘08‘, RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+‘09‘,RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+‘10‘, RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+‘11‘,RTRIM(YEAR(DATEADD(YEAR,0,GETDATE())))+‘12‘; SET @[email protected]+1; IF @@error<>0 BEGIN ROLLBACK TRAN RETURN; END END; COMMIT TRAN END; --SELECT * FROM Fact_SaleCar /* 功能说明:创建分区表 */ USE PFCube GO /* 功能说明:将普通表转换成分区表 . 介绍: 在以上代码中,我们可以看出,这个表拥有一般普通表的特性——有主键,同时这个主键还是聚集索引。 前面说过,分区表是以某个字段为分区条件,所以,除了这个字段以外的其他字段,是不能创建聚集 索引的。因此,要想将普通表转换成分区表,就必须要先删除聚集索引,然后再创建一个新的聚集索 引,在该聚集索引中使用分区方案。 可惜的是,在SQL Server中,如果一个字段既是主键又是聚集索引时,并不能仅仅删除聚集索引。因此, 我们只能将整个主键删除,然后重新创建一个主键,只是在创建主键时,不将其设为聚集索引,如以下 代码所示: */ /* 功能说明:创建文件组 */ ALTER DATABASE PFCube ADD FILEGROUP [FG_PFCube_01] ALTER DATABASE PFCube ADD FILEGROUP [FG_PFCube_02] ALTER DATABASE PFCube ADD FILEGROUP [FG_PFCube_03] GO /* */ /* 功能说明:创建文件 */ ALTER DATABASE PFCube ADD FILE ( NAME = N‘FG_PFCube_01_data‘, FILENAME = N‘D:\DB\PT\FG_PFCube_01_data.ndf‘, SIZE = 30MB, FILEGROWTH = 10% ) TO FILEGROUP [FG_PFCube_01]; ALTER DATABASE PFCube ADD FILE ( NAME=N‘FG_PFCube_02_date‘, FILENAME=N‘D:\DB\PT\FG_PFCube_02_data.ndf‘, SIZE=30MB, FILEGROWTH=10% ) TO FILEGROUP [FG_PFCube_02]; ALTER DATABASE PFCube ADD FILE ( NAME=N‘FG_PFCube_03_date‘, FILENAME=N‘D:\DB\PT\FG_PFCube_03_data.ndf‘, SIZE=30MB, FILEGROWTH=10% ) TO FILEGROUP [FG_PFCube_03]; GO /* 功能说明:创建分区函数 */ CREATE PARTITION FUNCTION PT_Fun_Fact_SaleCar_CheckOutDate(DATETIME) AS RANGE LEFT FOR VALUES(‘2010-1-1‘,‘2011-1-1‘) GO /* 功能说明:创建分区方案 */ CREATE PARTITION SCHEME PT_Sch_Fact_SaleCar_CheckOutDate AS PARTITION PT_Fun_Fact_SaleCar_CheckOutDate TO([FG_PFCube_01],[FG_PFCube_02],[FG_PFCube_03]) GO /*-------------------创建分区表------------------------ 功能说明:将普通表转换成分区表 首先:删掉主键,创建主键,但不设为聚集索引 -------------------------------------------------------*/ ALTER TABLE Fact_SaleCar DROP constraint PK_Fact_SaleCar ALTER TABLE Fact_SaleCar ADD CONSTRAINT PK_Fact_SaleCar PRIMARY KEY NONCLUSTERED ( SaleCarId ASC ) ON [PRIMARY] GO /* 功能说明: 在重新非聚集主键之后,就可以为表创建一个新的聚集索引, 并且在这个聚集索引中使用分区方案,如以下代码所示: 其次:创建一个新的聚集索引,在该聚集索引中使用分区方案 */ CREATE CLUSTERED INDEX CT_Fact_SaleCar ON Fact_SaleCar(CheckOutDate) ON PT_Sch_Fact_SaleCar_CheckOutDate(CheckOutDate) GO /* 功能说明:写查询,根据分区来查效果果然快多了。好处。。 */ SELECT * FROM Fact_SaleCar WHERE YEAR(CheckOutDate)=2010 --$PARTITION.PT_Fun_Fact_SaleCar_CheckOutDate(CheckOutDate) = 2
时间: 2024-11-25 19:43:10