after insert

Oracle trigger (1): Generally, trigger is similar to procedure and function, but it cannot be displayed and called. It can only be triggered by an event and then automatically called by oracle. generally, you can create a trigger for a table or view

1-Hierarchical inheritance2-Variable and immutable concepts3-string3.1-string is a very special class3.2-string literals vs. String objectsMethods of 3.3-string3.3.1-length ()3.3.2-concat (String)3.3.3-indexof (..)3.3.4-substring (..)3.3.5-replace3.3

Values (name, type, create_time, operation) values (new. name, new. type, DELIMITER // drop trigger if exists t_after_insert_test // create trigger t_after_insert_test after insert on test for each row begin if new. type = '1' THEN insert into test_

Using triggers to realize the materialized view on the e-commerce platform, we sometimes need to perform some aggregate calculations on user orders, such as the total number of orders, the total amount, and the average price, there are several ways

The following articles mainly describe the detailed usage and case analysis of MySQL triggers. At the same time, this article also lists some code in the actual operations of MySQL triggers, the following is a detailed description of the article.

Test Table 1? 1 2 3 4 5 6 7 8 Drop table if exists test; Create table test ( Id bigint (11) unsigned not null AUTO_INCREMENT, Name varchar (100) not null default '', Type varchar (100 ), Create_time datetime, Primary key (ID) )

I can see the post on "http/rest client" on the blog of Zhang banquet. I will skip all the installation steps. Next I will go directly to the test stage: virtual machine.Copy codeThe Code is as follows:[Root @ localhost ~] # Uname-Linux sunss 2.6.18-

1 Introduction Like the stored procedure, Mysql triggers are embedded into a mysql program. The trigger is a new function of mysql5. Currently, the online fengchao system, Beidou system, and Columbus system use the database of mysql5.0.45. Many

/*llist.cpp* Author:qiang xiao* time:2015-07-12*/#includeusing namespacestd;classnode{ Public: intdata; Node*ptr; Node (intelem=0, node* node= NULL) { This->data= Elem; This->ptr=NULL;}};classllist{Private: Node*Head; Node*tail; intlength;

Mysql triggers are a very important concept. The following describes the three statuses of mysql triggers for your reference. We hope you can have a deeper understanding of mysql triggers. CREATE TRIGGER 'user1 _ user2' after insert on 'user1'

Database trigger details bitsCN. com1 introduction Like the stored procedure, Mysql triggers are embedded into a mysql program. The trigger is a new function of mysql5. Currently, the online Fengchao system, Beidou system, and Columbus system use

Materialized view using triggers bitsCN.com Using triggers to realize the Materialized view on the e-commerce platform, we sometimes need to perform some aggregate calculations on user orders, such as the total number of orders, the total amount,

The method for creating a triggering program for MYSQL has just understood how to create a triggering program for MYSQL. Syntax: create trigger trigger_name trigger_time trigger_eventON tbl_name for each row trigger_stmt The text description is not

Quick understanding of the application of triggers in MySQL database tips: when a new integer is added to the database domain, the code segment that automatically updates the total number of running tasks is a trigger. The SQL command block that

Today colleagues let me see a trigger why always error, when the execution DML statement trigger trigger, will be reported ORA-04091 errors: ora-04091:table xxxx is mutating, trigger/function might not see it. The corresponding Chinese error prompt

In an oracle trigger, once data is inserted, you cannot use afterinsert to change the inserted data. If the data already exists, the trigger will not be executed. If you want to insert the queried data into the database, splice the data first, and

Document directory EXAMPLE 1: EXAMPLE 2: The post is referenced only by FSO. You can write it in PDF format, just like the markup language:Creating a PDF from a Stored

This article discusses the combined application of MySQL and memcached. The future trend has been gradually clarified. The combination of the two can make MySQL stronger. Almost a year ago, I wrote an article about ing Mysql Data to memcached. At

ArticleDirectory February 6 th, 2009 You may also like Map Mysql Data to memcached February 6 th, 2009 Author: Zhang LibingSource:

PL/SQL programmingOverview: it is an extension of Oracle in the standard SQL language. It supports not only embedding SQL languages, but also customizing constants and variables.Conditional statements, loop statements, logical control statements,