oracle trigger tutorial

1. Create a table in SYS mode that records the details of the client's login to the database serverCreate Tablelogon_logs (logon_time date,usernamevarchar2( -), machinevarchar2( -), Ipadrvarchar2( -), programvarchar2( -), modulevarchar2( -), terminalvarchar2( -));2. Create a trigger in SYS mode:Create or Replace TriggerLogusersconnectsafter Logon on Database beginInsert intoLogon_logsValues(Sysdate,User, Sys_context ('USERENV','HOST'), Sys_co

Document number generated by the oracle triggerCreate or replace trigger TRG_KC_SPRK_ IBefore insert on KC_SPRKFOR EACH ROWDECLAREVSCBH varchar2 (40 );ICount NUMBER;IFor number;BEGINSelect t. bhqz into vSCBH from xt_djbhgz t where t.gz id = 8; -- obtain a field of another table as the prefix, or assign a value directly to the field: vSCBH: = 'gxcb _'Select count (1) + 1 INTO iCount from KC_SPRK j where j. x

/hhhaaawwwkkk/archive/2009/05/06/269251.htmlReference content:---Create Dblink,dblink_test name, (A_test of synchronized database) ST10766 user name, ep password, ass100 connection stringCreate Public Databaselink dblink_test Connect toST10766 identified byEP using'ass100';---delete Dblink----drop Public database link dblink_test;----Create a tableCreate TableA_test (IDint, namevarchar( -), passvarchar( -))Select * froma_test;Insert intoA_test (Id,name,pass)Values(1,'ZZN','Shanshan')Insert i

Tags: com off oracl offic primary key self-increment insert ROM data triggerFirst, the data table name is T_office, its primary key is PID (number type)Second, create a sequence for the PID field of the data table firstSequence Name: S_t_office_pidSequence Details:Third, create the corresponding triggerTrigger Name: T_officetrigerTrigger Specific content:Create or replaceTRIGGERHymgs_industry_fq6. T_officetrigerBefore INSERT on Hymgs_industry_fq6. T_office for each ROWBEGINSelect S_t_office_pid.

The following is an example and description of creating an auto-incrementing sequence for a field in an Oracle table. /* ===================================================== ======================================= *//* Set auto-increment sequence: annual job plan execution object table *//* ===================================================== ======================================= */Drop sequence SEQ_TBL_Y_PLAN_ACT_OBJ;Create sequence SEQ_TBL_Y_PL

Oracle is not valid and is not re-validatedThe code is as follows:SQL Codeas follows: --创建中国地图表createtablechina_address(idnumbernotnullprimarykey,address_namevarchar2(30)notnull,parent_address_idnumber,foreignkey(parent_address_id)referenceschina_address(id));--创建中国地图序列createsequencechina_address_sequminvalue1maxvalue10000startwith1incrementby1nocyclecache5;--创建中国地图主键自增长触发器createtriggerchina_address_increase_trbeforeinsertonchina_addressf

Most people are used to the operations of other databases. One field is an auto-incrementing sequence field, but Oracle-related help is queried. View the relatedArticle, Repost this article to share with you // Create a sequenceCreate sequence car_guid increment by 1; // Create a tableCreate Table car(Guid number not null primary key,Phoneid char (11) not null,Username varchar (20) not null); // Add commentsComment on table car is 'positioning i

Label: 1 CREATE OR REPLACE TriggerTrig_solr_index_el_lesson2AfterUpdate ofLessonid, Lessonname, lessongoal, note, TeacherName, Teacherid, Classidname, ClassID, Crtime, statusOr Delete or Insert onEl_lesson3 forEach Row4 Declare 5 --Local Variables here 6New_status Number; 7 begin 8New_status:=: New.status;9 ifInserting Then Ten begin One INSERT intoSolr_index A (ID, docid, type) - VALUES -(Solr_index_seq. Nextval,: New.lessonid,'Add'); the End; - End if; -

During the work, sometimes this requirement is met, and a user's trigger query permission is granted to other users.How to grant a user's trigger query permission to other users?Method One:Grant the Create any trigger permission. This privilege is too large to be considered for granting this permissionMethod Two:Grant the Bebug permissions of the table to other u

Object entry and exit triggering is a common scenario for a game, including simultaneous sound playbackFirst create the area, create a new cube, remove the mesh render, and select is trigger Allow accessThe example uses Unity3d's first-person view control, but, under unity5.3.4 and playmaker1.7.8, the control does not respond, it should be a bug.So, I used a sphere, I wrote the keyboard control to move the scriptOn the cube, add the state machine. Add

Because the project needs to have a written Java program that wants to be called in a trigger on a table in Oracle so that every time the data is updated, the Java program is called to modify the background data.The process is now documented as follows:1. Writing Java programs[Java]View PlainCopy Public class Main { public static void Modify (String stattime) { String datas = "/var/spool/cron/

, the best way to enforce referential integrity is to define primary key and foreign key constraints in related tables. If you use a database diagram, you can create relationships between tables to automatically create foreign key constraints. The only difference between a trigger and a stored procedure is that the trigger cannot execute the EXECUTE statement call, but instead automatically triggers executi

Create a stored procedure that adds food Create or Replace procedure Add_food_pro (name in Varchar,price in number,description on varchar) as Begininsert into food (f_name,f_price,description) values (name,price,description); commit;end;--The following code is called the stored procedure Beginadd_food_pro (' sweet and sour fish ', 12 , ' delicious '); end; Create a stored procedure with an output parameter, take a+b=c as an exampleCreate or Replace procedure Add_num_pro (a in int,b with