sg3 trigger

Trigger-when table 1 inserts data, Table 1 inserts data into table 2, and trigger inserts data. -- Trigger Learning ALTER trigger name on table 1For insertAsBeginIf (select count (1) from table 1) = 0Print 'data not inserted'ElseInsert into Table 2 (field) select field from insertedEnd -- Stored procedure Learning (1)

First, there is a table:CREATE TABLE T_salary ( name VARCHAR2, age number (2), SALARY number (5)), insert into t_salary (name, age, SALARY) VALUES (' Wyl ', Th, 63000), insert into t_salary (name, age, SALARY) VALUES (' Werxiao ', +, 6012); Insert I Nto t_salary (name, age, salary) VALUES (' Lisi ', si, 7000), insert into t_salary (name, age, salary) VALUES (' Zhangsan ', 42, 4521);Trigger Scenario 1: Complex security checks, as follows　　CREATE

SQL Server uses Trigger to monitor the stored procedure change script instance, trigger Stored Procedure The following triggers are used to monitor changes to stored procedures.Create a monitoring table: Create table AuditStoredProcedures (DatabaseName sysname, ObjectName sysname, LoginName sysname, ChangeDate datetime, EventType sysname, EventDataXml xml ); Create monitoring

IOS click notification in the notification bar to enter the program trigger event, ios trigger When you click the notification in the notification bar to enter the program, the method in App Delegate will be triggered, which can be divided into the following two situations: 1. When the program is not started (that is, there is no process in the taskbar at the bottom:In this case, clicking the notification

[Data Center reconstruction]-view, trigger, use of stored procedure, trigger Stored Procedure In the data room charging system, it is very troublesome to write multiple SQL statements to query multiple tables. To facilitate code writing, code decoupling and, we reference views, triggers, and stored procedures. 1. What is it? ViewVirtual tables constructed from several basic tables and other views. The view

Python uses the time module to implement a specified time trigger example, python trigger This example describes how to use the time module to implement a specified time trigger in Python. We will share this with you for your reference. The details are as follows: In fact, it is very easy to specify a time for the script to process an event, such as a get request

When insert, update, and delete exist in a trigger, how does one trigger different triggers based on different operations?However, we didn't write Three triggers separately in terms of efficiency. Let's look at different requirements! Tables A and B are available. Records in Table B are taken from Table.A:ID (PK), name, sex, job, addressB:ID (PK), name, addressThe Code is as follows: Create

Tags: when end except To_char trigger LDL conf _id for1 CREATE OR REPLACE TRIGGERTrgregisterpregroup2BeforeUPDATE3 ontblregisterusers4 forEach ROW5 6 DECLARE7sort_idvarchar2( -);8E_codeVARCHAR2( +);9 BEGINTen IF: New.fldleftmoney: Old.fldleftmoney Then One SelectTo_char (Systimestamp (3),'YYYYMMDDHH24MISSFF') intosort_id fromdual; AE_code:= NULL; - forRinch(SelectA.fldusergroupid, - A.FLDX, the A.fldy, - A.fldz, - A.fldser

Copy codeThe Code is as follows:Create trigger TR_MasterTable_UpdateOn MasterTableAfter updateAsIf update ([Type]) -- this trigger is triggered only when the Type field is updated.Insert into MasterLogTableSelectId, (Case [Type] when 1 then 'type1'When 2 then 'type2'When 3 then 'type3'When 4 then 'type4'Else 'typedefault'End), NameFrom insertedGo In addition, the insert and update data are stored in the tem

Copy Code code as follows: Create Trigger Tr_mastertable_update On mastertable After update As If update ([Type])--triggers this trigger when the Type field is updated INSERT INTO masterlogtable Select Id , (case [Type] when 1 Then ' Type1 ' When 2 Then ' Type2 ' When 3 Then ' Type3 ' When 4 Then ' Type4 ' Else ' Typedefault ' End , Name From inserted Go Add another: Insert and upd

"1"When you click the Submit button, the "I'm trying to load ..." is displayed.Trigger Ajaxstart when Ajax starts executing () | Trigger Ajaxstop after Ajax execution ()

HS Series Data acquisition card can not only achieve high-speed data acquisition, but also through the (Multi channel) multi-channel measurement and analysis software, to achieve a variety of complex triggering function of the logic relationship, capture the transient high-speed signal and display the corresponding trigger curve.HS4, HS5, HS6 USB high-speed data acquisition cardVarious advanced triggering functionsIn order to control the USB series hi

Label:Triggers using tutorials and naming conventions DirectoryTriggers using tutorials and naming conventions 11, Trigger Introduction 12, trigger Example 23, trigger syntax and features 34, example one: row level trigger 145, example two: row level trigger 246, example thr

If there are constraints on the trigger table, check these constraints AFTER the INSTEADOF trigger is executed but before the AFTER trigger is executed. If the constraints are damaged, roll back the INSTEADOF trigger operation without executing the AFTER trigger. If there ar

CREATE TRIGGER trigger_name ON { table | view } [ WITH ENCRYPTION ] {{ { FOR | AFTER | INSTEAD OF } { [ INSERT ] [ , ] [ UPDATE ] }[ WITH APPEND ][ NOT FOR REPLICATION ]AS[ { IF UPDATE ( column )[ { AND | OR } UPDATE ( column ) ][ ...n ]| IF ( COLUMNS_UPDATED ( ) { bitwise_operator } updated_bitmask ){ comparison_operator } column_bitmask [ ...n ]} ] sql_statement [ ...n ] } } Parameters Trigger_name Is the name of the

Triggers can do a lot of things, but it also brings a lot of problems. The right use is to use it at the right time and not to use it when it is inappropriate.Some common uses for triggers are as follows:[1] Elastic referential integrity: implements many operations that DRI cannot achieve (for example, referential integrity across databases or servers, and many complex relationship types).[2] Create an audit trail: This means that the written records not only track most of the current data, but

SQL trigger syntaxSyntaxCreate trigger trigger_nameON {table | view}[With encryption]{{FOR | AFTER | instead of} {[INSERT] [DELETE] [UPDATE]}[With append][Not for replication]AS[{If update (column)[{AND | OR} UPDATE (column)][... N]| IF (COLUMNS_UPDATED () updated_bitmask)Column_bitmask [... n]}]SQL _statement [... n]}}ParametersTrigger_nameIs the name of the trigger