create trigger for insert update delete sql server

the insertonsubmit method to add a new employee to the Employees table and add the new territory to the Territories table, add the new employeeterritory object to the employeeterritories table that has a foreign key relationship with the new employee object and the new territory object. Call submitchanges to maintain these new objects and their relationships to the database.4. Override using dynamic cud) Note: cud is the abbreviation of create,

We will continue to explain the LINQ to SQL statements. In this article, we will discuss the Insert, Update, and Delete operations. This is the most common in our program. Let's look at the example.Insert/Update/Delete operation

Tags: SQLMySQL Database Basics (vi)--SQL INSERT, UPDATE, delete operation one, insert data 1, insert data for all fields of the tableInserting data using a basic INSERT statement requir

category 1 DML (Data Manipulation Language) trigger: indicates that the trigger is enabled when a DML event occurs in the database. DML events are the insert, update, and delete statements that modify data in tables or views. 2 DDL (Data Definition Language)

Tags: here update type DDL DCL Multi-column management Tcl otherObjectiveThe front of this series is all about querying select. But the SQL is very extensive, according to the different processing of data can be divided into: DML: Full data manipulation Language, as can be seen from the name, DML is the maintenance of the data management language, mainly to deal with the information itself; DDL

I used the SPRINGMVC integration MyBatis to perform the insert operation in the Sqlmapper configuration file and found that the program did not error, but the database table did not have the record just inserted. Looked up a lot of information, and finally found the answer on a blog: After the completion of the method, must have Session.commit (), this sentence to commit the transaction. Because the transaction is turned on when the

SQL Serveri without cursors, suitable for instance instances of cyclic DML (update delete insert) Use TEMPDBGOIF exists (SELECT * from tempdb. sysobjects where id=object_id (' tempdb. #tbl_Cursor ')) DROP TABLE #tbl_Cursorif exists (SELECT * from tempdb. sysobjects where id=object_id (' tempdb. #tbl_Value ')) DROP tabl

a),First of all, let's say the error phenomenon:Most of the popular Ecshop templates on the market need to execute a paragraph or a few SQL statements to modify the data structure or initialize some of it.Most Ecshop administrators will execute these SQL statements through the Ecshop backend database management SQL query for the sake of convenience.The problem is

UPDATE 1, the first backup data (security, improve performance). 2, batch update, small batch submission, to prevent the lock table. 3, if the updated automatically indexed, the amount of updated data is very large, the first to cancel the index, and then recreate. 4, the whole table data update, if the table is very large, it is recommended to

(10))From Sys.user_col_comments tWhere t.table_name = a.table_name) | | ' From ' | | A.table_name | |AFrom User_col_comments AWhere a.table_name = Upper (' Com_employee ')and Rownum = 1;--Query statement, Memo fieldSelect (SELECT ' Select ' | |Wm_concat (' A. ' | | t.column_name | | ' As ' | |substr (NVL (Trim (t.comments), ' no Notes '), 0, 15) | | ' "' | |CHR (13) | | CHR (10))From Sys.user_col_comments twhere t.table_name = a.table_name) | | ' From ' | | A.table_name | |AFrom User_col_commen

trigger is activated. The After trigger can only be used for tables. Each modification action (insert, update, and delete) of a table or view can have an instead of trigger. Each modification action of a table can have multiple A

　1. A trigger is a special stored procedure. It cannot be explicitly called. Instead, it is automatically activated when a record is inserted, updated, or deleted into the table.Therefore, triggers can be used to implement complex integrity constraints on tables. 　　2. SQL Server creates two special tables for each trigger