lightspeed update

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Bulk update and delete for Lightspeed

1.UpdateFor bulk operations, either update or remove is done using the Lightspeed query object.Note: Student is the table (entity) to be update, Stuname is the one used in table student for queryingvar stuquery = new Query ( typeof (Student), entity.attribute ("stuname") = = "Lao Wang");This query object is equivalent to a where. The specific SET statement

We found an ORM tool, lightspeed.

Please visit http://www.mindscape.co.nz/Products/LightSpeed/whylightspeed.aspx Lightspeed when CES the code you need to writeLightspeed was designed to make writing software easier, faster and more enjoyable. There is minimal impact on your domain model classes and no need to write bulky XML Mapping Files. Lightspeed is all about being fast.

Lightspeed Using Tutorials

LightSpeed is a high-performance. NET domain modeling and O/R mapping framework, the first level of LINQ support, Visual Studio 2008/2010 Designer integration, is a well-known high-performance framework. " Note: fees are charged!" "The installation process is not mentioned.The first stepRight-click Project, add New item---data---Lightspeedmodel. Then rename click Add toThe file appears in the project and opensThe second step is to add the modelDrag an

LightSpeed's left Join bug solution

When you use Lightspeed to perform a LEFT JOIN or right JOIN operation on a database, you often report strange exceptions.Clearly the table is not a problem, the surface of the statement is not a problem, can always error. Look at the SQL in the parser, it is lightspeed to the left right join parsing is problematic.Note: LS to the LEFT join and right join will finally parse into group Join to handleOf cours

LightSpeed SQL and the use of stored procedures

While using the query provided by Lightspeed can solve most of the problems, if the business logic is too complex, it is sometimes necessary to execute SQL statements or stored proceduresThe way to use SQL is by using Findbysql.The Findbysql parameter has only one Command.And the way to create a command is not that simple.var cmd = UnitOfWork.Context.DataProviderObjectFactory.CreateCommand ();Command needs to be given text, and there may be parameters

It may be an ignored update Statement (update technique) or an update statement

It may be an ignored update Statement (update technique) or an update statement Well, I 've written a simple article again, and I hope you will not be enlightened. This time I want to talk about the update statement in SQL. Speaking of this, there will certainly be a lot of brothers who are not satisfied. Isn't it an

MySQL Update field value prompts you is using Safe update mode and you tried to update a table without a WHERE is uses a KEY column to Disab Le Safe mode

Tags: you key error option Col NEC post error code Mys1 IntroductionWhen the where statement is missing from the update field, MySQL prompts for the error code:Error code:1175. You is using Safe update mode and you tried to update a table without a WHERE is uses a KEY column to disable safe mode , toggle the option in Preferences, SQL Queries and reconnect. 0.000

JQuery implements real-time update of the drop-down menu (the content is time) and the method of following-up update of charts, jquery real-time update

JQuery implements real-time update of the drop-down menu (the content is time) and the method of following-up update of charts, jquery real-time update Project sharing: Module 1: real-time display of the drop-down menu for the last week: // Display date drop-down box for (var I = 0; I The output format is year-month-day. In the project, select the corresponding

Update associate other tables to Update data in batches-Cross-database-Cross-Server update

. The following method may be used when a synchronization program is required in a project or when a large amount of data is updated automatically. 3. for analysis, we need to integrate some data into a table, which involves associating multiple tables with the primary key to obtain the values of some of the fields. We can simply implement it through update. I found an article, pretty good: When updating tables in batches, when updating columns in a

SQL Update multi-table joint Update method, sqlupdate joint Update

SQL Update multi-table joint Update method, sqlupdate joint Update Sometimes we need to update the data in multiple tables at the same time, then we need to use the following method: (1) sqlite multi-Table update Method Copy codeThe Code is as follows://---------------------

How to view update records, win10 update history, and win10 update records in win10 System

How to view update records, win10 update history, and win10 update records in win10 System How to view win10 system update records? After the Windows 10 system is updated, how can I view the updated content? In fact, it can be viewed in Windows Update. Open the win10 oper

COCOS2D-JS Online Update Code script Dynamic update script hot update

First, the basic idea of COCOS2D-JS dynamic update The official beta release provides the Assetsmanager class to complete the dynamic update steps, Description: Https://github.com/chukong/cocos-docs/blob/master/manual/framework/html5/v3/assets-manager/zh.md COCOS2D program, take Android as an example, the program exists in 2 places: APK installation directory (/data/ Dalvik-c

Two tables A and B, each with a field, update time A.MODIFIED_TM and B.modified_tm,a table as the main table, update time is not empty, but the B table update time may be empty, now to take a, B two table time the newest one, b.modified

Problem Description:Two Tables A and B, each with a field, update time A.MODIFIED_TM and B.modified_tm,a table as the main table, update time is not empty, but the B table update time may be empty, now to take a, B two table time the newest one, b.modified_ If the TM is empty, take A.modified_tm, for example:Table AID Modified_tm1 2013/3/10 18:07:122 2013/4/10 18

Insert on Dumplicate Update when the primary key is the same update, the contents of the update change to 1

Insert on Dumplicate Update when the primary key is the same update, the contents of the update change to 1 Multiple contents of update are separated by commas ... And notmysql> insert INTO ' 200702 ' (' Domain ', ' 2nd_domain ', ' TLD ', ' query_ns1 ', ' query_ns2 ', ' report_date ') VALUES (' DNSPOD.C Om ', ' dnspo

SQL UPDATE statement, Error code:1175. You are using Safe update (encountered when making a view update)

Forwarded on: Http://blog.csdn.net/qq_26684469/article/details/51105188?locationNum=5fps=1The original set sql_safe_updates = 1;If the conditional attributive clause is followed by a non-primary key, the above error will be reported, the above security level is set lower, as follows:SET sql_safe_updates = 0;Then execute the UPDATE statement, asSet sql_safe_updates = 0;update Project.demand Set title= "The h

An update 80070002 error occurred when the computer tried to update Windows 10 o'clock using Windows Update

If the win system comes with a Windows Update upgrade feature, we can use it to upgrade the Windows 10 operating system, but there is a part of the Web page that uses it to prompt for error 80070002 errors when it is upgraded: Solutions, as follows First, stop the update service In your system into the computer's "Control Panel" and then find the list of "management tools" this different system, th

Differences between for update and for update nowait in Oracle

Http://www.cnblogs.com/quanweiru/archive/2012/11/09/2762223.html 1,for update and for update nowait differences: First of all, if only Select,Oracle will not add any lock, that is, Oracle to Select read the data there is no limit, although it is possible that another process is modifying the data in the table, And the result of the modification may affect the result of your current SELECT statement, but bec

"JAVA" for update and for update NOWAIT differences

1. The difference between for update and for update nowait:First of all, if only select, Oracle will not add any lock, that is, Oracle to select read the data there is no limit, although it is possible that another process is modifying the data in the table, And the result of the modification may affect the result of your current SELECT statement, but because there is no lock, the select result is the state

MySQL batch update and batch update multiple records of different values implementation method

In MySQL batch update we may use Update,replace into to operate, the following to give you detailed description of MySQL batch update and performance bar! MySQL UPDATE statement is simple, update a field of the data, generally write code as follows:

Differences between for update and for update nowait in Oracle

Original source http://bijian1013.iteye.com/blog/1895412 the difference between the for update and for update nowait First of all, if only select, Oracle will not add any locks, that is, Oracle to select There is no limit to the data read, although it is possible that another process is modifying the data in the table, and the result of the modification may affect the result of your current SELECT statem

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