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  • Newtonsoft.Json.JsonConvert.DeserializeObject 失敗的情況
    test...more
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    ...more
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搜尋 cast 結果:
還原NuGet程序出錯 (Microsoft Visual Studio)
錯誤代碼 NETSDK1064
找不到套件 BouncyCastle.Cryptography,版本 2.3.0。該套件可能因 NuGet restore 還原而刪除,或是可能因為路徑長度上限的限制,而讓 NuGet restore 可能只有部分完成所致。

試了好久總算可以正常打開
工具>>NuGet套件管理員>>套件管理員設定


重起就可以正常跑了!!!
 
More...
hannah, 2024/5/31 上午 09:48:53
關於 Entity Framework Extensions 的 UpdateFromQueryAsync
這個指令還是會把所有的資料 Select 出來,再更新

原指令:

UPDATE Job Set En_Status = 200 Where En_Status = 100 and LastTouchAt < '2023-05-06 12:34:56'
其中  '2023-05-06 12:34:56' 是 DateTime.Now.AddMinutes(-2) 的結果(Web Server 端的時間扣 2 分鐘)

但,若是改使用 UpdateFromQueryAsync 如下:
var c = await Ds.NewContext.GvContext.Jobs.Where(j => j.En_Status == Cst.Job.Status.Running && j.LastTouchAt < DateTime.Now.AddMinutes(-2))
                .UpdateFromQueryAsync(j => new Ds.Gv.Job { En_Status = Cst.Job.Status.ReStarting });

產生的 SQL 如下:
UPDATE A 
SET A.[En_Status] = @zzz_BatchUpdate_0
FROM [Job] AS A
INNER JOIN ( SELECT [j].[Id], [j].[CancelledAt], [j].[CancelledBy], [j].[En_Status], [j].[EndAt], [j].[Exception], [j].[Filename], [j].[InformationJson], [j].[InitAt], [j].[Is_CheckOnly], [j].[LastTouchAt], [j].[LastTouchMessage], [j].[LoopStartAt], [j].[Name], [j].[ScheduleId], [j].[TotalTouch], [j].[TouchCount]
FROM [Job] AS [j]
WHERE [j].[En_Status] = 100 AND [j].[LastTouchAt] < DATEADD(minute, CAST(-2.0E0 AS int), GETDATE())
           ) AS B ON A.[Id] = B.[Id]

有兩個要注意的地方:
1. 它會先 Select 全欄位,再做更新

2. 它的時間是 DB Server 的現在時間。不是 Web Server 端的時間。


順便記錄一下。若是要執行 Update xx Ser cc = cc + 1 Where ...

EF 可寫為:
var c = await Ds.NewContext.GvContext.Jobs.Where(j => j.En_Status == Cst.Job.Status.Running && j.LastTouchAt < DateTime.Now.AddMinutes(-2))
                .UpdateFromQueryAsync(j => new Ds.Gv.Job { TotalTouch = j.TotalTouch + 1 });

轉換的 SQL 為:
UPDATE A 
SET A.[TotalTouch] = B.[TotalTouch] + 1
FROM [Job] AS A
INNER JOIN ( SELECT [j].[Id], [j].[CancelledAt], [j].[CancelledBy], [j].[En_Status], [j].[EndAt], [j].[Exception], [j].[Filename], [j].[InformationJson], [j].[InitAt], [j].[Is_CheckOnly], [j].[LastTouchAt], [j].[LastTouchMessage], [j].[LoopStartAt], [j].[Name], [j].[ScheduleId], [j].[TotalTouch], [j].[TouchCount]
FROM [Job] AS [j]
WHERE [j].[En_Status] = 100 AND [j].[LastTouchAt] < DATEADD(minute, CAST(-2.0E0 AS int), GETDATE())
           ) AS B ON A.[Id] = B.[Id]
More...
Bike, 2023/4/29 下午 08:44:31
使用Linq取得CheckBoxList多選值
取得CheckBoxList多選值的方式:

【未使用Linq的寫法】

       Dim values = New List(Of String)()
       For Each item As ListItem In Me.CheckBoxList1.Items
             If item.Selected Then
                  values.Add(item.Value)
             End If
       Next

       Dim result = String.Join(",", values.ToArray(Of String)())
 

【使用Linq的寫法】

               Dim result = String.Join(",", Me.CheckBoxList1.Items.Cast(Of ListItem)() _
                                   .Where(Function(x) x.Selected) _
                                   .[Select](Function(x) x.Value).ToArray())

p.s. Linq需使用.NET Framework 3.5以上的版本
More...
candice, 2014/11/26 下午 04:57:30
查詢資料庫 Recovery 的進度
在 SQL 2008 可以用以下的 SQL

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/
 
More...
Bike, 2014/8/14 上午 09:28:46
[SQL]將多筆資料合併為一筆顯示(FOR XML PATH)
SELECT cast(ProductID AS NVARCHAR ) + ',' from [Order Details]
where OrderID = '10248'
FOR XML PATH('')

參考: http://www.dotblogs.com.tw/kevinya/archive/2012/06/01/72553.aspx

EX:
SELECT ',' + ltpid
FROM V_ltp_main WHERE ltpkind = 2
FOR XML PATH('')




STUFF ( character_expression , start , length ,character_expression )
下列範例會傳回從第一個字串 (abcdef) 中,從位置 2 (b) 開始,刪除三個字元所建立的字元字串,且會在刪除點插入第二個字串。
SELECT STUFF('abcdef', 2, 3, 'ijklmn')

http://technet.microsoft.com/zh-tw/library/ms188043(v=sql.105).aspx

EX:
select STUFF(
(SELECT ',' + ltpid FROM V_ltp_main WHERE ltpkind = 2 FOR XML PATH(''))
, 1, 1, '')

 
More...
Reiko, 2013/5/10 上午 11:54:49
建立sp_who3(Connection pool 執行的 SQL 指令)
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))
More...
Reiko, 2013/5/3 上午 10:48:08
查詢 Lock (Deadlock) 源頭用的 SQL
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
More...
Bike, 2012/12/26 下午 05:03:52
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