我正在尝试创建一个触发器，它将审核所有新旧列或更新，插入的每一行。这是表
ID NUMBER(10,0) No 1
ENTITY_ID NUMBER(10,0) No 2
LOCATION_ID NUMBER(10,0) Yes 3
NAME VARCHAR2(128 CHAR) No 4
CREATED_BY VARCHAR2(255 CHAR) No 'unknown' 5
UPDATED_BY VARCHAR2(255 CHAR) No 'unknown' 6
TS_CREATED TIMESTAMP(6) No "SYSTIMESTAMP
" 7
我不知道如何编写触发器。
CREATE OR REPLACE TRIGGER audit_security_zones
BEFORE DELETE OR INSERT OR UPDATE ON security_zones
FOR EACH ROW
DECLARE
BEGIN
END;
我还想从应用程序中使用客户端标识符senbt。这是我的审计跟踪表。
ID NUMBER(10,0) No 1
ACTION VARCHAR2(20 BYTE) Yes 2
TABLE_ID VARCHAR2(100 BYTE) Yes 3
OLD_VALUE VARCHAR2(1000 BYTE) Yes 4
NEW_VALUE VARCHAR2(1000 BYTE) Yes 5
USERNAME VARCHAR2(100 BYTE) Yes 6
TS_UPDATED TIMESTAMP(6) No systimestamp 7
这是一个很好的方法吗？然后，我将根据每个表为用户呈现一个视图，以向他们显示已更改的内容。
更新
我正在努力实现类似于以下内容的
CREATE OR REPLACE TRIGGER audit_security_zones
BEFORE DELETE OR INSERT OR UPDATE ON security_zones
FOR EACH ROW
DECLARE
var_action CHAR(1);
BEGIN
IF INSERTING THEN var_action := 'INSERT';
ELSIF UPDATING THEN var_action := 'UPDATE';
ELSE var_action := 'DELETE';
END IF;
/* loop eahc column in the update or insert or delete statement executed */
for each col in stmt/row{
INSERT INTO audit_table
(
ACTION,
TABLE_ID,
OLD_VALUE,
NEW_VALUE,
USERNAME,
TS_CREATED
) VALUES (
var_action,
:OLD.ID,
:OLD.columnVALUE,
:new.COLUMNVALUE,
ociidentifier,
systimestamp
)
}
END;
UPDATE2
CREATE OR REPLACE TRIGGER audit_security_zones
BEFORE DELETE OR INSERT OR UPDATE ON security_zones
FOR EACH ROW
DECLARE
var_action CHAR(6);
BEGIN
IF INSERTING THEN var_action := 'INSERT';
ELSIF UPDATING THEN var_action := 'UPDATE';
ELSE var_action := 'DELETE';
END IF;
IF var_action = 'DELETE' THEN
INSERT INTO audit_table
(
ACTION,
USERNAME,
ID,
O_ENTITY_ID,
O_LOCATION_ID,
O_NAME,
O_CREATED_BY,
O_UPDATED_BY,
O_TS_CREATED
) VALUES (
var_action,
USERNAME,
:OLD.ID,
:OLD.ENTITY_ID,
:OLD.LOCATION_ID,
:OLD.NAME,
:OLD.CREATED_BY,
:OLD.UPDATED_BY,
:OLD.TS_CREATED
);
ELSEIF var_action = 'INSERT' THEN
INSERT INTO audit_table
(
ACTION,
USERNAME,
ID,
N_ENTITY_ID,
N_LOCATION_ID,
N_NAME,
N_CREATED_BY,
N_UPDATED_BY
N_TS_CREATED
) VALUES (
var_action,
USERNAME,
:NEW.ID,
:NEW.ENTITY_ID,
:NEW.LOCATION_ID,
:NEW.NAME,
:NEW.CREATED_BY,
:NEW.UPDATED_BY,
:NEW.TS_CREATED
);
ELSEIF var_action = 'UPDATE' THEN
INSERT INTO audit_table
(
ACTION,
USERNAME,
ID,
O_ENTITY_ID,
O_LOCATION_ID,
O_NAME,
O_CREATED_BY,
O_UPDATED_BY,
O_TS_CREATED,
N_ENTITY_ID,
N_LOCATION_ID,
N_NAME,
N_CREATED_BY,
N_UPDATED_BY
N_TS_CREATED
) VALUES (
var_action,
USERNAME,
:OLD.ID,
:OLD.ENTITY_ID,
:OLD.LOCATION_ID,
:OLD.NAME,
:OLD.CREATED_BY,
:OLD.UPDATED_BY,
:OLD.TS_CREATED,
:NEW.ENTITY_ID,
:NEW.LOCATION_ID,
:NEW.NAME,
:NEW.CREATED_BY,
:NEW.UPDATED_BY,
:NEW.TS_CREATED
);
END IF;
END;
我收到以下错误
Error(31,9): PLS-00103: Encountered the symbol "VAR_ACTION" when expecting one of the following: := . ( @ % ;
Error(42,4): PLS-00103: Encountered the symbol "N_TS_CREATED" when expecting one of the following: . ) , @ The symbol "." was substituted for "N_TS_CREATED" to continue.
Error(54,12): PLS-00103: Encountered the symbol "VAR_ACTION" when expecting one of the following: := . ( @ % ;
Error(71,4): PLS-00103: Encountered the symbol "N_TS_CREATED" when expecting one of the following: . ) , @ The symbol "." was substituted for "N_TS_CREATED" to continue.
Error(90,4): PLS-00103: Encountered the symbol ";" when expecting one of the following: if
UPDATE3
CREATE OR REPLACE TRIGGER audit_security_zones
BEFORE DELETE OR INSERT OR UPDATE ON security_zones
FOR EACH ROW
DECLARE
var_action CHAR(6);
BEGIN
IF INSERTING THEN var_action := 'INSERT';
ELSIF UPDATING THEN var_action := 'UPDATE';
ELSE var_action := 'DELETE';
END IF;
IF var_action = 'DELETE' THEN
INSERT INTO audit_table
(
ACTION,
USERNAME,
ID,
O_ENTITY_ID,
O_LOCATION_ID,
O_NAME,
O_CREATED_BY,
O_UPDATED_BY,
O_TS_CREATED
) VALUES (
var_action,
USERNAME,
:OLD.ID,
:OLD.ENTITY_ID,
:OLD.LOCATION_ID,
:OLD.NAME,
:OLD.CREATED_BY,
:OLD.UPDATED_BY,
:OLD.TS_CREATED
);
ELSE IF var_action = 'INSERT' THEN
INSERT INTO audit_table
(
ACTION,
USERNAME,
ID,
N_ENTITY_ID,
N_LOCATION_ID,
N_NAME,
N_CREATED_BY,
N_UPDATED_BY,
N_TS_CREATED
) VALUES (
var_action,
USERNAME,
:NEW.ID,
:NEW.ENTITY_ID,
:NEW.LOCATION_ID,
:NEW.NAME,
:NEW.CREATED_BY,
:NEW.UPDATED_BY,
:NEW.TS_CREATED
);
ELSE IF var_action = 'UPDATE' THEN
INSERT INTO audit_table
(
ACTION,
USERNAME,
ID,
O_ENTITY_ID,
O_LOCATION_ID,
O_NAME,
O_CREATED_BY,
O_UPDATED_BY,
O_TS_CREATED,
N_ENTITY_ID,
N_LOCATION_ID,
N_NAME,
N_CREATED_BY,
N_UPDATED_BY,
N_TS_CREATED
) VALUES (
var_action,
USERNAME,
:OLD.ID,
:OLD.ENTITY_ID,
:OLD.LOCATION_ID,
:OLD.NAME,
:OLD.CREATED_BY,
:OLD.UPDATED_BY,
:OLD.TS_CREATED,
:NEW.ENTITY_ID,
:NEW.LOCATION_ID,
:NEW.NAME,
:NEW.CREATED_BY,
:NEW.UPDATED_BY,
:NEW.TS_CREATED
);
END IF;
END;
我现在得到的错误是
Error(90,4): PLS-00103: Encountered the symbol ";" when expecting one of the following: if
UPDATE4
CREATE OR REPLACE TRIGGER audit_security_zones
BEFORE DELETE OR INSERT OR UPDATE ON security_zones
FOR EACH ROW
DECLARE
var_action CHAR(6);
BEGIN
IF INSERTING THEN var_action := 'INSERT';
ELSIF UPDATING THEN var_action := 'UPDATE';
ELSE var_action := 'DELETE';
END IF;
IF var_action = 'DELETE' THEN
INSERT INTO audit_table
(
ACTION,
USERNAME,
ID,
O_ENTITY_ID,
O_LOCATION_ID,
O_NAME,
O_CREATED_BY,
O_UPDATED_BY,
O_TS_CREATED
) VALUES (
var_action,
'test',
:OLD.ID,
:OLD.ENTITY_ID,
:OLD.LOCATION_ID,
:OLD.NAME,
:OLD.CREATED_BY,
:OLD.UPDATED_BY,
:OLD.TS_CREATED
);
ELSIF var_action = 'INSERT' THEN
INSERT INTO audit_table
(
ACTION,
USERNAME,
ID,
N_ENTITY_ID,
N_LOCATION_ID,
N_NAME,
N_CREATED_BY,
N_UPDATED_BY,
N_TS_CREATED
) VALUES (
var_action,
'test',
:NEW.ID,
:NEW.ENTITY_ID,
:NEW.LOCATION_ID,
:NEW.NAME,
:NEW.CREATED_BY,
:NEW.UPDATED_BY,
:NEW.TS_CREATED
);
ELSIF var_action = 'UPDATE' THEN
INSERT INTO audit_table
(
ACTION,
USERNAME,
ID,
O_ENTITY_ID,
O_LOCATION_ID,
O_NAME,
O_CREATED_BY,
O_UPDATED_BY,
O_TS_CREATED,
N_ENTITY_ID,
N_LOCATION_ID,
N_NAME,
N_CREATED_BY,
N_UPDATED_BY,
N_TS_CREATED
) VALUES (
var_action,
'test',
:OLD.ID,
:OLD.ENTITY_ID,
:OLD.LOCATION_ID,
:OLD.NAME,
:OLD.CREATED_BY,
:OLD.UPDATED_BY,
:OLD.TS_CREATED,
:NEW.ENTITY_ID,
:NEW.LOCATION_ID,
:NEW.NAME,
:NEW.CREATED_BY,
:NEW.UPDATED_BY,
:NEW.TS_CREATED
);
END IF;
END;
我得到的新错误
Error(9,3): PL/SQL: SQL Statement ignored
Error(19,4): PL/SQL: ORA-00904: "O_TS_CREATED": invalid identifier
Error(32,3): PL/SQL: SQL Statement ignored
Error(42,4): PL/SQL: ORA-00904: "N_TS_CREATED": invalid identifier
Error(55,9): PL/SQL: SQL Statement ignored
Error(71,4): PL/SQL: ORA-00904: "N_TS_CREATED": invalid identifier
答案 0 :(得分：1)
你不能“循环”通过OLD和NEW值，你必须明确地引用每一个，即
INSERT INTO audit_table
(
ACTION,
TABLE_ID,
OLD_VALUE,
NEW_VALUE,
USERNAME,
TS_CREATED
) VALUES (
var_action,
:OLD.ID,
:OLD.column1VALUE,
:new.COLUMN1VALUE,
ociidentifier,
systimestamp
);
INSERT INTO audit_table
(
ACTION,
TABLE_ID,
OLD_VALUE,
NEW_VALUE,
USERNAME,
TS_CREATED
) VALUES (
var_action,
:OLD.ID,
:OLD.column2VALUE,
:new.COLUMN2VALUE,
ociidentifier,
systimestamp
);
... etc.
您可以通过编写一个过程来包装INSERT语句并多次调用而不是INSERT语句本身来简化代码。