convert sql to linq online

, iqueryable, and iqueryable have no problems. 3. A dynamic sorting function is required. The limitations of list are described here. The traditional method may require a dynamic parameter to pass the columns to be sorted and then run them in the SP, but we do not intend to use sp, there is no dynamic SQL statement, everything is strongly typed, and then there is a LINQ to

elements in the collection, and the eligible elements remain. If you do not specify a seed value, the seed value defaults to the first element of the collection. Here is a table summarizing the LINQ to SQL statement. Where To filter or delay Select To select or delay Distinct Query a result set that is not duplicated; Count

Editor's note: I wanted to convert traditional Chinese to traditional Chinese. After that, I can see that the images are also traditional Chinese. Author:Yan zhongcheng A bunch of Mass SQL Injection attacks, let us back to the SQL Injection attack a few years ago, many years later today, we are still stuck in the same danger. This article describes the history, c

(); } #endregion #regionIEnumerable MembersIEnumerator Ienumerable.getenumerator () {return((IEnumerable) results). GetEnumerator (); } #endregion #regionIfunctionresult Members Public Objectreturnvalue {Get{returnreturnvalue;} } #endregion #regionIDisposable Members Public voidDispose () {}#endregion } View Code Detailed Visibility HTTP://SOCIAL.MSDN.MICROSOFT.COM/FORUMS/EN/LINQPROJECTGENERAL/THREAD/F403E047-E38C-45AB-9155-DBF83

A common case is that multiple conditions or sorting statements need to be attached to the database to obtain conditions by using LINQ-to-SQL or Lambda (Entity Framework ). Take name = "John" age = 23 as an Example First, define a concept. For lambda, the following two expressions are equivalent. 1. List. Where (P => P. Name = "John" P. Age = 23) 2. List. Where (P => P. Name = "John"). Where (P =>

= g.sum (E = E.integralvalue) //The sum of the employees ' points 9 }) on U.userid equals IR. UserIDTen Into GC One From GCI in GC. DefaultIfEmpty ()//Zolian equivalent to SQL A where(Deptsystem = =0?true: D.deptsystem = = Deptsystem) (state = =1? u.isdeleted = =false: u.isdeleted = =true) //may not have an employee's score record in the table -

Label:Using EF's own small functions need to encounter inner join and group by combination of use and anonymous type of processing, search a lot, basically can not meet their own needs, so summed up also realized on their own write out, has been prepared to view and partner query Reference (General statement query does not say, the network search a lot) Statement query background (or not directly look at the statement is also very tough): the main want to achieve similar features of QQ album dis

that the session that needs a shared lock (S) needs to wait. This session will wait forever. I just said, "part of the line" ... 1 SELECT * from Sys.dm_tran_locks When we perform an on-line index rebuild with lock priority, the interesting thing happens: 1 --Perform an Online Index Rebuild 2 ALTER INDEXIdx_col1 onFoo REBUILD3 with 4 ( 5ONLINE= on 6 ( 7 wait_at_low_priority8 ( 9Max_duration= 1, TenAbort_after_wait= Self One )

); } returnCmdtext; } Private StaticRegex S_withnolockregex =NewRegex (@"(] as [td+])", regexoptions.compiled); }}View Code2, DataContext extension method support paging/// ///DataContext Extension Methods/// Public Static classdatacontextextends{/// ///executequery method extension to convert an object to an entity in Redader mode/// /// /// /// /// Public StaticList ThisDataContext DataContext, iqueryableO

session will wait forever. I just said, "part of the line" ... 1 SELECT * from Sys.dm_tran_locks When we perform an on-line index rebuild with lock priority, the interesting thing happens: 1 --Perform an Online Index Rebuild 2 ALTER INDEXIdx_col1 onFoo REBUILD3 with 4 ( 5ONLINE= on 6 ( 7 wait_at_low_priority8 ( 9Max_duration= 1, TenAbort_after_wait= Self One ) A ) - ) - GO In this case, our ALTER INDEX statement waits

Detailed description of how to convert SQL server to oracle developed by asp.net, sqloracle Preface Some time ago, our company had to transfer SQL server to oracle, and found that there was less information on the Internet. So I would like to share my experiences and record the problems here. I will not talk much about them below, let's take a look at the detaile

for nchar, nvarchar, char, varchar, binary, or varbinary data types.StyleA date format style whereby DateTime or smalldatetime data is converted to character data (nchar, nvarchar, char, varchar, nchar, or nvarchar data type) or a string format style that will float, Real, money, or smallmoney data is converted to character data (nchar, nvarchar, char, varchar, nchar, or nvarchar data types).SQL Server supports data formats in Arabian styles using th

------------------------------------------------------------------------------------------------------------12 | 112 ISO | Yymmdd------------------------------------------------------------------------------------------------------------13 | 113 Euro Default | DD Mon yyyy hh:mi:ss:mmm (24-hour system)------------------------------------------------------------------------------------------------------------14 | 114 | Hh:mi:ss:mmm (24-hour system)--------------------------------------------------

Before introducing the tutorial, let's get to know the access and SQL Server two databases. Introduction to Microsoft Office access Microsoft Office Access is a relational database management system published by Microsoft. Combined with the Microsoft Jet Database Engine and graphical user interface features, it is one of the system programs in Microsoft Office. Microsoft Office Access Flaw 1, when the database is too large, the general Access data

Convert the suffix. frm,. myd, and myi into. SQL and import it to the mysql database. frmmyi Use a local MySQL database to convert these files to. SQL scripts. 1. Install MySQL. The version and font must be the same as that on the server. Otherwise, garbled characters are displayed.2. Use the create database name comma

These functions in fact, many online data, but in order to facilitate their own memory, I still decided to write a bit, all say good memory than bad writing, so or write a bit more.The cast () function essentially converts one type to another, such as converting a string type to a time type: SELECT CAST (' 2011-10-2 ' as datetime), or convert the numeric type to a string type: SELECT CAST (1 as BIGINT) Th

Tags: jpg also has div nav IMA import data navicat SQL is perfectSQL Server data into MySQL data, can be said to be a cliché, there are many ways online, today we look at a different method, but also very simple, although a little flaw, but it is a good way, of course, if the combination of mss2sql that is very perfectThis conversion relies on the use of tools Navicat Premium.First, move the database to loc

Tags: convert user name number of users count whereUse masterSelect Loginame,count (0) from sysprocessesGROUP BY LoginameOrder by count (0) descSelect Nt_username,count (0) from sysprocessesGROUP BY Nt_usernameOrder by count (0) descIf one of the SQL Server user name Test connections is more, view the host name it came from:Select Hostname,count (0) from sysprocesses where loginame= ' test 'GROUP BY hostnam

criteria, and the corresponding grouping is found. However, the intermediate table we get is the group number. Then we have to convert the corresponding time according to the group number: Logtime=group_num*5/1440+to_date (date, ' Yyyy-mm-dd ') So: SELECT (To_date (DATE, ' yyyy-mm-dd hh24:mi ') + Group_num * 5/(each)) LogTimeSo we can query the condition by the point of time 1. The specific SQL statement

It is believed that every reader of Java development has been exposed to SQL build statements, especially in the early stages of project development, because the database is the cornerstone of the project.In modern project development, there are many ORM frameworks that can interact with the database through simple entity mapping, but we originally designed the database table structure, not the entity class. The entity class is only lossy compression