Pre-Insert trigger Pre-Insert Fires during the Post and Commit Transactions process, before a row is inserted. It fires once for each record that is marked for insert. Example This example assigns aprimary keyfield based on asequencenumber, and then writes a row into an auditing table, flag...
-- row级before trigger CREATEORREPLACETRIGGERrestrict_salary BEFOREINSERTORUPDATEOFsalaryONemployees FOREACH ROW BEGIN IFNOT(:NEW.job_idIN('AD_PRES','AD_VP'))AND:NEW.salary > 15000THEN RAISE_APPLICATION_ERROR(-20202,'Error'); ENDIF; END; -- row级after trigger,注意:new和:old的用法 CREATE...
-- statement级before trigger CREATEORREPLACETRIGGERsecure_emp BEFOREINSERTORDELETEORUPDATEONemployees BEGIN IF (TO_CHAR(SYSDATE,'DY')IN('SAT','SUN'))OR (TO_CHAR(SYSDATE,'HH24:MI')NOTBETWEEN'08:00'AND'18:00')THEN RAISE_APPLICATION_ERROR(-20500, 'You may modify EMPLOYEES table only on we...
CREATE OR REPLACE TRIGGER trg_example. BEFORE INSERT. ON my_table. FOR EACH ROW. WHEN (new_column > 100)。 BEGIN. -触发器操作。 END; 在上面的例子中,触发器trg_example将在满足条件new_column > 100时触发,触发器操作将被执行。 需要注意的是,触发器的条件必须是一个有效的SQL表达式,并且必须返回...
Example:禁止在周四,周五修改emp表数据 CREATEORREPLACETRIGGERemp_trigger BEFOREUPDATEORDELETEORINSERTONempBEGINIFto_char(sysdate,'day')IN('星期四','星期五')THENRAISE_APPLICATION_ERROR(-20008,'不允许在周四周五修改emp表');ENDIF;END; updateempsetsal=800; ...
Example:禁止在周四,周五修改emp表数据 CREATE OR REPLACE TRIGGER emp_trigger BEFORE UPDATE OR DELETE OR INSERT ON emp BEGIN IF to_char(sysdate,'day') IN ('星期四','星期五') THEN RAISE_APPLICATION_ERROR(-20008,'不允许在周四周五修改emp表'); END IF; END; ...
1、ORACLE SID查看设置 查看SID、用户名 $ env|grep SID 、select * from v$instance、select instance_name,host_name from v$instance; 查看数据库所有用户及用户状态: SQL> select usernames,account_status from dba_users; 设置SID $ export ORACLE_SID=hisvhfs ...
createorreplaceTRIGGERAFTERDELETEORINSERTORUPDATEON"PK","c1","c2"OFmy_name.my_tableFOREACHROW... 完成修改后,右键单击触发器名称并选择编译以编译修订后的触发器。 确保生成的触发器在编译后标识为有效。 如何还原已发布表或其关联的表空间以读取写入: ...
新增對基本ALTER TRIGGER/ALTER INDEXDDL 的支援 (啟用/停用等) 改進資料行轉換,以便更符合內建函式名稱。 為支持NULL的資料行生成篩選後的唯一索引 改進Azure Synapse Analytics 的變數宣告轉換 修正專案名稱中特殊字元的問題 SSMA v8.8 SSMA for Oracle v8.8 版本包含: ...
TRIGGER -o triggers.sql -b %namespace%/schema/triggers -c %namespace%/config/ora2pg.conf ora2pg -p -t TYPE -o types.sql -b %namespace%/schema/types -c %namespace%/config/ora2pg.conf ora2pg -p -t VIEW -o views.sql -b %namespace%/schema/views -c %namespace%/config/ora...