wavelab mastering

})//Transaction operations Db.ado.queryable　　Through this article I believe you can easily use the Sqlsugar ORM to achieve simple increase, delete, check and changeNote: The above example uses the default Initkey method, if the Initkey.attribute need to add a primary key tag on the entity's attributes, the connection database in this article is described in detail.If you don't understand it, you can download the Https://github.com/sunkaixuan/SqlSugar with detailed demo and build library scripts.

/versions/f52784fdd592_initial_migration.py ... doneThree. Updating the databaseAfter checking and correcting the migration script, we can use the DB Upgrade command to apply the migration to the database:python hello.py db upgradeinfo [Alembic.runtime.migration] Context impl mysqlimpl.info [alembic.runtime.migration] would assume non- Transactional Ddl.info [alembic.runtime.migration] Running upgrade , f52784fdd592, initial MigrationFor the first migration, the effect is the same as callin

statementEXEC sp_helptext ‘alter_data‘Results3.4.2.3. System stored Procedures sp_depends View information about stored proceduresExecute the following statementEXEC sp_depends ‘alter_data‘Results3.4.2.4. catalog view View stored ProceduresExecute the following statementSELECT * FROM sys.proceduresResults3.4.3. Modifying a stored procedureModify the stored procedure with the alter PROCEDURE statement, just modify the create in the example above to run as alter.3.4.4. Deleting a stored procedure

Tgr_valid_dataGoCreate Trigger Tgr_valid_dataOn studentAfter insertAs DECLARE @age int, @name varchar (20); Select @name = s.name, @age = s.age from inserted s; if (@age Begin RaisError (' Age of inserting new data ' is problematic ', 16, 1); Rollback Tran; EndGo--testINSERT into student values (' Forest ', 2, 0, 7);INSERT into student values (' Forest ', 22, 0, 7);SELECT * FROM student the order by ID;# example, action logif (object_id (' Log ', ' U ')

Stu_detail--second row description table connection on student.s_id = stu_detail.s_id; --The third line describes the conditions of the connection, usually the ID is equal 2. Full-Outer connection A full outer join, also known as a full outer join, returns all the record data in two connections. In the student table and the Stu_detail table, use the full outer join query, as in the following statement. Use test SELECT student.name,stu_detail.addr From student full OUTER JOIN Stu_detail on stud

fromMyUserInner JoinMyBook onMybook.userid=Myuser.userid;SelectMybook.bookname,myuser.username,myuser.userage fromMyUser Left JoinMyBook onMybook.userid=Myuser.userid;SelectMybook.bookname,myuser.username,myuser.userage fromMyUser Right JoinMyBook onMybook.userid=Myuser.userid;SelectMybook.bookname,myuser.username,myuser.userage fromMyUser Full JoinMyBook onMybook.userid=Myuser.userid; The difference between these joins can be clearly observed from the result, and the first connection will cre

: generally include the system kernel optimization, MySQL itself configuration file optimization. 16. mysql efficient architecture read/write separation configurationwith the increasing number of visits, based on the original MySQL master-slave architecture, all operations are done in the Lord, which will inevitably cause the main server pressure is very large, so in order to reduce the master read and write, we need to read and write, separate the architecture is: The Lord is responsible for wr

# #这里编辑/mnt is equivalent to editing/dev/sda1, and editing/dev/sda1 is equivalent to editing a server-shared diskPermanent Mount:Vim/etc/fstab/dev/sda1/mnt XFS Defaults,_netdev 0 0# #这个文件是在系统初始化之前启动的, so it means there is no network, it can not be mounted, so add _netdevMount-a3. Removing iSCSI information(1) Client:Yum Install Tree-ytree/var/lib/iscsi/Iscsi-m node-tiqn.com.westos:storage1-p 172.25.254.210-u # #撤销登陆iscsi-m node-tiqn.com.westos:storage1-p 172.25.254.210-o Delete # #删除tree/var/lib

information confirmation:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/72/CF/wKioL1XttdiBxsrFAAFBKMEw73s634.jpg "/>650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/72/D2/wKiom1Xts6_iMpRHAAFCt2NRZXs502.jpg "/>6. Click Finish to complete the configuration process:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/72/CF/wKioL1XttdnzJOyOAAD7G30KWBE014.jpg "/>7. After the configuration is successful, the following contents are displayed under Database column:650) this.

modify the specified - execsp_rename'Q_user.uismullogin','Upwds' - execsp_rename'Q_user.upwds','Uismullogin'--There's a constraint that doesn't seem to be renamed in - to Alter Table Book + AddBook_copy_novarchar(Ten), Publish_datesmalldatetime - the Alter TableQ_user * --add test nvarchar check (len (test) >6), SS Int--Add a column $ --Drop Column Test-when you delete a constrained column, you delete its subordinate columns (if this is done directly with visual action) Panax Notogi

"/>8. To view the Test OU information, the computer has joined the Test OU normally:650) this.width=650; "height=" 389 "title=" clip_image018 "style=" margin:0px;border:0px;padding-top:0px; Padding-right:0px;padding-left:0px;background-image:none, "alt=" clip_image018 "src=" http://s3.51cto.com/wyfs02/ M02/72/f1/wkiom1xv_kxqfmbnaadlboxfklq408.jpg "border=" 0 "/>9, view IE Home information configuration is normal:650) this.width=650; "height=" 419 "title=" clip_image020 "style=" border:0px;paddi

: Creating the Repodata of the current directory#vim Centos-local.repo[Xen4centos]Name=xen 4 CentOS 6baseurl=file:///yum/repo/Gpgcheck=0To install the httpd service using Yum:#yum Groupinstall "Server Platform development"-YExplanation: Install package Group "erver Platform Development" and automatically answer Yes when installing#cd httpd-2.2.29Explanation: Go to the httpd directory#./configure--prefix=/usr/local/apache2--SYSCONFDIR=/ETC/HTTPD2Explanation: The installation path of the program i

Mastering linear algebra in 10 days: astoundin Translator: mapleflying Recently, my friend Scott Young made an amazing feat: within a year, he completed all 33 of the legendary mit computer science curriculum, from Linear Algebra to Computational Theory. The most important thing is that he is self-taught. He watches online tutorial lectures and uses actual tests for self-evaluation. (Go to Scott's FAQ page to see how he can accomplish this challenge

Prior to the AIR4.0 version, r* could not be used within ANE, and operation Resources could use only Getresourceid (). This is especially frustrating for the SDK.However, after 4.0, you can use r* to access resources directly by specifying platform.xml at the time of packaging.Adobe website RELATED linksA video of the stickOne of the two points to note1 ' Android Project works to be set as library2 ' shot jar Package Delete r* related class One-click Script see: Ane from Getting started to

confidently as before.Guilty to a guilty conscience, things are always to do, cows are always going to blow. So what is the solution? That is rapid learning, rapid growth, quickly become old birds.So I picked up the book in sarcasm! JAVA from getting started to mastering. To tell the truth, after deciding on the shape, I have been quick to read a lot of Java books, but when I saw this from the introduction to mastery, I still look again. Think it is

Reprinted from: http://www.read.org.cn/html/2070-zhuan-zai-shi-tian-nei-zhang-wo-xian-xing-dai-shu-jing-ren-de-chao-su-xue-xi-shi-yan.html I just saw a very wonderful article in the translation, which was specially reproduced for sharing by more people. Source: calnewport.com Original article title: Mastering linear algebra in 10 days: astounding experiments in ultra-Learning Address: http://calnewport.com/blog/2012/10/26/maste Translator: maplef

Method 2 for improving learning efficiency -- Methods for mastering the connotation of complete concepts Liu Jianwen, http://blog.csdn.net/keminlau ) Key: learning methods logical conceptsIntroduction Concept is the basic unit of knowledge, a summary of people's understanding at a certain stage, and a crystallization of people's understanding. The results of any scientific research must be fixed in the form of concepts. The entity forms of fixed conce

Mastering JQuery UIwith browsers becoming + and more powerful, theJqueryUI Library provides tools that can is used to create feature rich and interactive applications without bearing the PAI N of writing numerous lines of JavaScript.mastering jquery UI would help you explore the depths of the jquery UI library. Right from the first chapter, you'll build your own projects while learning the intricacies of the library. Each chapter explores a new topic

] ~]$ Cat/var/log/sudo ... Jul 23:10:24 localhost sudo:foobar:tty=pts/1; Pwd=/home/foobar; User=root; Command=/bin/cat/etc/shadow Redirection is not documented! Why? Because the shell had done the redirection before the command was run, Sudo did not see the redirect at all. This also has a benefit, the following means will not succeed: [[email protected] ~]$ sudo ls/root >/etc/shadowbash:/etc/shadow: Insufficient permissions Sudo has its own way to protect securi

Today brings you crawling content about the client Wim template, and after this chapter is complete, the operations on the MDT general deployment are basically sufficient, and during a series of posts on the MDT 2013update1 Preview deployment Windows 10 Series, I hope you enjoy it. The latter will be immediately followed by the MDT 2013 from getting started to mastering the series of SQL Advanced Deployment and custom DIY series tutorials.Client Image