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replication. the database fields in the forum and mailbox are greatly different. You still need to change a lot of code! Use a trigger to update the user table of the forum database! After careful consideration of the preceding three methods, the Forum authentication method compiled by PHP has been changed to the salt authentication method adapted to the mailbox within the capability scope, the user name and password of the imported mailbox are verif
Create MySql stored procedures and triggers (Lite version) bitsCN.com 1. CREATE a stored procedure delimiter // drop procedure if exists 'proc _ test' // create procedure 'proc _ test' (TABLE_NAME VARCHAR (20), num int) begin select * FROM TABLE_NAME limit num; END // DELIMITER; CALL the stored procedure: CALL PROC_TEST ('user', 20); delete the stored procedure: drop procudure productpricing 2. create a trigger
Mysql storage program, function, trigger program and replication: FAQs: bitsCN.com Does MySQL 5.1 storage programs and functions work for replication?Yes, the standard behavior executed in the storage program and function is copied from the master MySQL server to the slave server. There are a few limitations, which are
. automatically calculates the data value, if the value of the data meets certain requirements, the specific processing. For example, if the company's account has less than $50,000 in money, it immediately sends warning data to the financial officer.The MySQL trigger syntax is detailed.㈠create Trigger SyntaxCREATE TRIGGER
The Mysql database has three tables: order, orderitem, and goods. the order and orderitem are associated with the orderid field of orderitem through the order ID field; goods and orderitem are associated with the goodsid field of orderitem through the ID field of goods. now you want to create a trigger. When an order is confirmed, the remaining quantity and sale quantity of all products in this order are ch
Tags: summary display technology sharing rules transactional replication table insert data count-through index MySQL seems to be starting from 5.0.2 version to support the function of the trigger, this blog to introduce the trigger, first of all, or talk about the concept of something:What is a triggerA trigger is a da
the Hot Management ID table to determine 3. Hot Table ID Update 4.chinese Table Hot field auto-fill; Three. Code logic and implementation: Database write operation, for WEX5 is relatively simple, here only to say the use of triggers and considerations 1. Create a trigger: In the Heidisql database management tool provided by WEX5, right-click. 2. Writing SQL statements Description: 1. Name, which is the trigg
trigger_event on tb_name for each ROW trigger_stmttrigger_name: Name of the trigger Tirgger_ Time: Trigger, for before or aftertrigger_event: Trigger event, INSERT, delete, or updatetb_name: Indicates that a trigger is established, which is the table on which the trigger is
. The classification level is two levels, that is, there are two levels of directories similar to this: News --> Domestic news --> International news Tutorial --> Asp tutorial --> C # tutorial --> Jsp tutorial Download --> Tool download --> Source code download Each article belongs to one of the above directories. In t
Main Category Table Name: Navtion_TopSubject primary key fTopID Char (36)Sub-category table name: the foreign key of Navtion_NodeSubject is the sameContent table name: The tText foreign key is the same as aboveCopy codeThe Code is as follows:// ------------- Code start --------------------Create trigger [RemoveTopAndNodeText] ON [dbo]. [Navtion_TopSubject]INSTEAD OF DELETEAS/* Define the variables used by the trig
Use bitsCN.com for MYSQL triggers Mysql triggers are in the format of create trigger trigger_name after/before insert/update/delete on one_table for each row your_ SQL. the red part is named by yourself, and the blue part is a value. The Black part is required, the final green part is the SQL statement you want to run. the update method for the two table join op
`capacity_pm` FOR EACH ROW beginset new.cpu_core_total=new.host_total * new.templete_cpu_core;set new.cpu_core_used=new.host_used * new.templete_cpu_core;set new.cpu_core_free=new.cpu_core_total - new.cpu_core_used;set new.cpu_core_util=new.cpu_core_used / new.cpu_core_total;end;CREATE TRIGGER `pm_before_update_trigger` BEFORE UPDATE ON `capacity_pm` FOR EACH ROW beginset new.cpu_core_total=new.host_total * old.templete_cpu_core;set new.cpu_core_used
Tags: root 1.0 rac Delete MySQL operation ... Confusion type It's Reprint Please specify source: http://blog.csdn.net/l1028386804/article/details/46763665 A trigger is a special stored procedure, in which the stored procedure is called with call, and the trigger does not need to use the calling It does not need to be started manually. Only when a pre-defined eve
This article describes how to solve the problem of setting the trigger permission in MYSQL. you can refer to the example in this article to describe how to set the trigger permission in MYSQL. it is very useful for permission errors. The specific analysis is as follows: When importing data from
Create a trigger for mysql bitsCN.com. The trigger creation syntax is as follows: Create trigger trigger_name trigger_time trigger_event ON tbl_name for each row trigger_stmt Trigger_name indicates the trigger name, which you can specify; Trigger_time indicates the
Tags: MySQL triggerLin Bingwen Evankaka Original works. Reprint please specify the source Http://blog.csdn.net/evankakaA trigger (TRIGGER) is an action triggered by an event. These events include INSERT statements, UPDATE statements, and DELETE statements. When the database system executes these events, the trigger is
updates to table relationships. When a new integer is added to the database domain, the code segment that automatically updates the total number of operations is a trigger. The SQL command block that automatically records changes to a special database table is also a trigger instance. The trigger is a new feature of MySQL
Mysql trigger newold details bitsCN.com Mysql trigger new old Mysql trigger new old: "NEW. column_name" or "OLD. column_name". Technically, NEW | OLD. column_name and OLD The column name belongs to the created transition
I have set a trigger in Mysql. if the user has not modified the user name, the uid can be used as the default user name: entercodehere trigger, so you cannot modify your own table... DELIMITER | createtriggerdefault_nameafterinsertonuserforeachrowbeginupdateusersetnew.user_namene1_uid; END | a data entry is inserted and the following error occurs: can #39; tupda
Solve field Redundancy 3 2 Tank Simpler code Here, there is a redundant field name. We can use joint searches to find the name in the user table when reading comments. Why should we have redundant fields? Because simple SQL statements are more efficient to execute, but the more redundant fields, the better. The more redundant fields, the more database burden. What I want to do is: When I update the name of the user table and the t
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