create trigger for insert update delete sql server

Copy Code code as follows: Create Trigger Tri_wk_csvhead_history on Wk_csvhead_history --Declares a tri_wk_csvhead_history trigger, The instead of INSERT---insert operation is substituted for the following action As Begin DECLARE YB cursor--Declares a cursor For

Tags: crud mongodbThe database uses the Create read (find) update (UPDATE) Delete (remove), which is also used by MongoDB;First, createAdd the document to the collection with the Insert function. For exampleCreate a database blog, add the document to the collection post (the

Tags: io ar using for data on CTI as database--SQL SERVER determines if there is a trigger, stored procedure--Determine the storage process and delete if it existsIF (EXISTS (SELECT * from sysobjects WHERE name= ' procedurename ' and type= ' P '))DROP PROCEDURE procedurename--Judgment

": "LCQ"}The array is positioned using the $ character to update the value at a specific position in the array.> LCQ = Db.user.findOne () { "_id": ObjectId ("55024de2849b70a4f670f413"), "address": { "province": " Shandong ", " location ":" Zoupin " }, " Count ": 3, " Friends ": [ " Zhangsan ", " join ", " Xiaoming " ], " haha ":"

follows Copy Code Delete from a where exists (Select 1 from a where a=1) The above method only applies to the simple small data volume of bulk data deletion, if it is a large number of data removal we can refer to the following methods The code is as follows Copy Code Create PROCEDURE Batch_delete@TableName nvarchar (100),--table name@FieldName

Consider the following: When the update value is the same as the original value, does SQL Server actually update or ignore it? For example: UpdateTbnameSetName='ABC' --The original value of name is ABC.WhereID=1 Another example is: UpdateTbnameSetName='ABC' --The original value of name is ABC.WhereName='ABC' N

Tags: redis mongodb crudAfter you've installed MongoDB, you can try running the JavaScript shell.Under Mac, from the installation to the shell that can run MONGO, the steps are as follows:1. Find the website of MongoDB. Download the appropriate installation package. such as DMG under the Mac2. Unzip the installation.3. Configure the environment variables.The details will not be expanded, since another article has been mentioned. MongoDB crud, is a very basic database content, in the Turing serie

Label:First build the table: CREATE TABLE Lxt_user3 ( user_id int unsigned NOT NULL primary key auto_increment comment ' user ID ', qq_open_id varch AR (+) unique,---------------The table must have a unique field, otherwise the following SQL statement will not perform as expected role_id int unsigned not NULL, Category _id int unsigned, status int unsigned, name varchar (default '), img varchar (+) d

join [DBO]. ZHONGHE_TAB as z on f. Student ID = Z. Student ID8 order by f. Student ID ASC9 GO10. View the created view:3.2.1. Modify the information of multiple data tables through the view ???? :1 UPDATE [SQL-LI]. [dbo]. [SHITU_FFENSHU_XINXI]2 SET [name] = 'aaaaa', -- this field is in the [information table]3 [average score] = 111 -- this field is in [score]4 WHERE [student ID] = 60805 GO results:

Copy codeThe Code is as follows: Create trigger tri_wk_CSVHead_History on wk_CSVHead_History -- Declare a tri_wk_CSVHead_History trigger, Instead of insert --- the insert operation is replaced by the following Operation As Begin Declare YB cursor -- declare a cursor Fo