DECLARE @DBName VARCHAR(64) = 'CHIComp01'
DECLARE @ErrorLog AS TABLE([LogDate] CHAR(24), [ProcessInfo] VARCHAR(64), [TEXT] VARCHAR(MAX))
INSERT INTO @ErrorLog
EXEC sys.xp_readerrorlog 0, 1, 'Recovery of database', @DBName
SELECT TOP 5
[LogDate]
,SUBSTRING([TEXT], CHARINDEX(') is ', [TEXT]) + 4,CHARINDEX(' complete (', [TEXT]) - CHARINDEX(') is ', [TEXT]) - 4) AS PercentComplete
,CAST(SUBSTRING([TEXT], CHARINDEX('approximately', [TEXT]) + 13,CHARINDEX(' seconds remain', [TEXT]) - CHARINDEX('approximately', [TEXT]) - 13) AS FLOAT)/60.0 AS MinutesRemaining
,CAST(SUBSTRING([TEXT], CHARINDEX('approximately', [TEXT]) + 13,CHARINDEX(' seconds remain', [TEXT]) - CHARINDEX('approximately', [TEXT]) - 13) AS FLOAT)/60.0/60.0 AS HoursRemaining
,[TEXT]
FROM @ErrorLog ORDER BY [LogDate] DESC
在 SQL 2012 可以用以下的 SQL:
DECLARE @DBName VARCHAR(64) = 'databasename'
DECLARE @ErrorLog AS TABLE([LogDate] CHAR(24), [ProcessInfo] VARCHAR(64), [TEXT] VARCHAR(MAX))
INSERT INTO @ErrorLog
EXEC master..sp_readerrorlog 0, 1, 'Recovery of database', @DBName
SELECT TOP 5
[LogDate]
,SUBSTRING([TEXT], CHARINDEX(') is ', [TEXT]) + 4,CHARINDEX(' complete (', [TEXT]) - CHARINDEX(') is ', [TEXT]) - 4) AS PercentComplete
,CAST(SUBSTRING([TEXT], CHARINDEX('approximately', [TEXT]) + 13,CHARINDEX(' seconds remain', [TEXT]) - CHARINDEX('approximately', [TEXT]) - 13) AS FLOAT)/60.0 AS MinutesRemaining
,CAST(SUBSTRING([TEXT], CHARINDEX('approximately', [TEXT]) + 13,CHARINDEX(' seconds remain', [TEXT]) - CHARINDEX('approximately', [TEXT]) - 13) AS FLOAT)/60.0/60.0 AS HoursRemaining
,[TEXT]
FROM @ErrorLog ORDER BY [LogDate] DESC
結果如下:
資料來源:
http://timlaqua.com/2009/09/determining-how-long-a-database-will-be-in-recovery-sql-server-2008/
後還Bike 教我可在SQL就先轉成 "weekday" : Datepart(dw,Create_Date) 但是效率還是有點慢
後來發現加在一起可以變更快 : Datepart(dw,CONVERT(varchar(10), Create_Date, 111))
可能是因為先變成比較好判斷的長度 實驗幾次後真的會比較快一點
varchar(10) 可以取到需要的位數就好 varchar(10) 似乎會比 varchar(100) 再快一點 雖然測試機差異不大
建置
想使用 SQL Server的全文檢索功能，先去[控制台][系統管理工具][服務]看以下兩項服務是否有啟動：
1. SQL Full-Text Filter Daemon Launcher(MSSQLSERVER)：建立 fdhost.exe處理序的服務，這是主控處理全文檢索索引之文字資料的斷詞工具與篩選的必要項目。
2. SQL Server Agent(MSSQLSERVER)：透過 SQL Server Agent作業的排程，啟動全文檢索－索引母體的擴展，累加資料表母體擴展。
如果沒有啟動第一項服務(SQL Full-Text...)，直接進行 Select全文查詢，會出現錯誤訊息如下：
SQL Server在與全文篩選器的後台程序宿主(FDHOST)的進程通信時遇到錯誤0x80070218。
請確保 FDHOST進程正在運行。若要重新啟動FDHOST進程，請運行 sp_fulltext_service 'restart_all_fdhosts' 的命令或重新啟動 SQL Server實例。
參考網址：
http://blog.xuite.net/sugopili/computerblog/76684376-SQL+Server%E5%85%A8%E6%96%87%E6%AA%A2%E7%B4%A2%E5%B0%8F%E6%8A%80%E5%B7%A7
使用 & 設定
設定
看網址
使用
設定全文檢索並以建立索引後，就可以透過條件 WHERE CONTAINS(欄位,搜尋的字)的方式，
來做全文檢索的查詢方式，下面範例程式碼， 依序介紹平常使用Like及全文檢索下CONTAINS用法。
參考網址：
http://www.dotblogs.com.tw/dotjum/archive/2009/08/01/9796.aspx
例如檢查產品是否停賣
原本的寫法是用以下方法尋找
DT.Select("Id=" & ProductId)
後來改寫 DataTable 加上 PrimaryKey
'寫入Cache前先設定好
DT.PrimaryKey = New DataColumn() {obj.Columns("Id")}
Dim row As DataRow = DT.Rows.Find(ProductId)
共1085筆 找出其中一筆
Select方法 - 00:00:00.0000559
Rows.Find - 00:00:00.0000064
兩者速度差了約10倍
USE [master]
GO
/****** Object: StoredProcedure [dbo].[sp_who3] Script Date: 06/26/2008 09:40:54 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[sp_who3]
(
@filter tinyint = 1,
@filterspid int = NULL
)
AS
SET NOCOUNT ON;
DECLARE @processes TABLE
(
spid int,
blocked int,
databasename varchar(256),
hostname varchar(256),
program_name varchar(256),
loginame varchar(256),
status varchar(60),
cmd varchar(128),
cpu int,
physical_io int,
[memusage] int,
login_time datetime,
last_batch datetime,
current_statement_parent xml,
current_statement_sub xml)
INSERT INTO @processes
SELECT sub.*
FROM
(
SELECT sp.spid,
sp.blocked,
sd.name,
RTRIM(sp.hostname) AS hostname,
RTRIM(sp.[program_name]) AS [program_name],
RTRIM(sp.loginame) AS loginame,
RTRIM(sp.status) AS status,
sp.cmd,
sp.cpu,
sp.physical_io,
sp.memusage,
sp.login_time,
sp.last_batch,
(
SELECT
LTRIM(st.text) AS [text()]
FOR XML PATH(''), TYPE
) AS parent_text,
(
SELECT
LTRIM(CASE
WHEN LEN(COALESCE(st.text, '')) = 0 THEN NULL
ELSE SUBSTRING(st.text, (er.statement_start_offset/2)+1,
((CASE er.statement_end_offset
WHEN -1 THEN DATALENGTH(st.text)
ELSE er.statement_end_offset
END - er.statement_start_offset)/2) + 1)
END) AS [text()]
FROM sys.dm_exec_requests er CROSS APPLY sys.dm_exec_sql_text(er.sql_handle) AS st
WHERE er.session_id = sp.spid
FOR XML PATH(''), TYPE
) AS child_text
FROM sys.sysprocesses sp WITH (NOLOCK) LEFT JOIN sys.sysdatabases sd WITH (NOLOCK) ON sp.dbid = sd.dbid
CROSS APPLY sys.dm_exec_sql_text(sp.sql_handle) AS st
) sub INNER JOIN sys.sysprocesses sp2 ON sub.spid = sp2.spid
ORDER BY
sub.spid
-- if specific spid required
IF @filterspid IS NOT NULL
DELETE @processes
WHERE spid <> @filterspid
-- remove system processes
IF @filter = 1 OR @filter = 2
DELETE @processes
WHERE spid < 51
OR spid = @@SPID
-- remove inactive processes
IF @filter = 2
DELETE @processes
WHERE status = 'sleeping'
AND cmd IN ('AWAITING COMMAND')
AND blocked = 0
SELECT spid,
blocked,
databasename,
hostname,
loginame,
status,
current_statement_parent,
current_statement_sub,
cmd,
cpu,
physical_io,
program_name,
login_time,
last_batch
FROM @processes
ORDER BY spid
RETURN 0;
查詢過濾sp_who3
DECLARE @Table TABLE(
spid int,
blocked int,
databasename varchar(256),
hostname varchar(256),
loginame varchar(256),
status varchar(60),
current_statement_parent xml,
current_statement_sub xml,
cmd varchar(128),
cpu int,
physical_io int,
program_name varchar(256),
login_time datetime,
last_batch datetime
)
INSERT INTO @Table EXEC sp_who3
SELECT *
FROM @Table
WHERE databasename= 'Leon' and cmd = 'AWAITING COMMAND'
and CAST(current_statement_parent AS nvarchar(max)) not LIKE '%AspNet_SqlCachePollingStoredProcedure%'
order by CAST(current_statement_parent AS nvarchar(max))
declare @spid int,@bl int
DECLARE s_cur CURSOR FOR
select 0 ,blocked
from (select * from sysprocesses where blocked>0 ) a
where not exists(select * from (select * from sysprocesses where blocked>0 ) b
where a.blocked=spid)
union select spid,blocked from sysprocesses where blocked>0
OPEN s_cur
FETCH NEXT FROM s_cur INTO @spid,@bl
WHILE @@FETCH_STATUS = 0
begin
if @spid =0
select N'引起數據庫死鎖的是:
'+ CAST(@bl AS VARCHAR(10)) + N'進程號,其執行的SQL語法如下'
else
select N'進程號SPID：'+ CAST(@spid AS VARCHAR(10))+ N'被進程號SPID：'+ CAST(@bl AS VARCHAR(10)) +N'阻塞,其當前進程執行的SQL語法如下'
DBCC INPUTBUFFER (@bl )
FETCH NEXT FROM s_cur INTO @spid,@bl
end
CLOSE s_cur
DEALLOCATE s_cur
刪除 procedure
Kill XXX
刪除資料庫
DROP DATABASE name;
SQL版本查詢
SELECT SERVERPROPERTY('productversion')
SELECT SERVERPROPERTY ('productlevel')
SELECT SERVERPROPERTY ('edition')
with(nolock, index(IX_NTA_StayingRoomSales))
Select * From Table with(nolock, index(IX_NTA_StayingRoomSales)) Where AAAAA
Principal(來源), Mirror(鏡像), Witness(見證，非必要，系統出現錯誤時，自動切換資料庫)
上方三個資料庫需使用相同版本
/*查資料庫版本號*/
SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY ('productlevel'),SERVERPROPERTY ('edition')
參考資料：
MS SQL Server 2008_容錯轉移_資料庫鏡像實作
Simple Step by Step Database Mirroring
SQL Server 2008 的執行個體之間傳送登入和密碼
Troubleshooting Database Mirroring Error 1418
Microsoft SQL 2008 SERVER -- Fix : Error: 1418 Mirroring
/*
DB: Principal
Step 1, 備份來源資料庫
*/
backup database reikoTest to disk='D:\MirrorTEST_Full.bak'
with format
go
backup log reikoTest to disk='D:\MirrorTEST_log.bak'
go
/*
DB: Mirror
Step 2, 建立mirror資料庫
*/
Create database ReikoTEST
go
restore database ReikoTEST from disk='D:\MirrorTEST_Full.bak'
with replace, norecovery
go
restore log ReikoTESt from disk='D:\MirrorTEST_log.bak'
with norecovery
go
/*
DB: Principal
Step 3, 建立SQL Server 2008 的執行個體之間傳送登入和密碼
注意 這個指令碼會在 master 資料庫中建立兩個預存程序。這兩個預存程序名為 sp_hexadecimal 預存程序和 sp_help_revlogin 預存程序。
※第一次建立mirror時(預存程序不存在時)，才需執行本指令
*/
SQL指令碼
/*
DB: Principal
Step 4, 查詢傳送登入帳號和密碼
sp_help_revlogin 預存程序所產生的輸出指令碼是登入指令碼。這個登入指令碼會建立具有原始「安全性識別碼」(SID) 和原始密碼的登入。
*/
EXEC sp_help_revlogin
/*
執行後，複製要使用的帳號，至mirror資料庫執行
ex.
-- Login:reiko
CREATE LOGIN [reiko] WITH PASSWORD = 0x010036D88E850F3F29E70120CB4CD2DEE7CBAD1AB83AA4A6A927 HASHED, SID = 0x495A943A23B12C48A43C39776B879A49, DEFAULT_DATABASE = [master], CHECK_POLICY = OFF, CHECK_EXPIRATION = OFF
*/
/*
DB: Mirror
Step 5, 建立傳送登入帳號和密碼
刪掉DEFAULT_DATABASE = [master],(上方紅字部份)
ex.
-- Login:reiko
CREATE LOGIN [reiko] WITH PASSWORD = 0x010036D88E850F3F29E70120CB4CD2DEE7CBAD1AB83AA4A6A927 HASHED, SID = 0x495A943A23B12C48A43C39776B879A49, CHECK_POLICY = OFF, CHECK_EXPIRATION = OFF
*/
-- Login:reiko
CREATE LOGIN [reiko] WITH PASSWORD = 0x010036D88E850F3F29E70120CB4CD2DEE7CBAD1AB83AA4A6A927 HASHED, SID = 0x495A943A23B12C48A43C39776B879A49, CHECK_POLICY = OFF, CHECK_EXPIRATION = OFF