RE: A Trigger question
Jared , thanks a lot ! Yes , i did it a minute after i posted this question (just did not think of it earlier). But i'm still interested to know Is there a way to let the user insert into tableA , and capture the inserts into tableB that the trigger should perform , and do those inserts manually later . Thanks a lot ! -Original Message- Sent: Wednesday, August 22, 2001 7:34 PM To: Multiple recipients of list ORACLE-L Tsk, tsk Andrey, this doesn't even require RTFM. :) create table a; ( insert your columns here) create table b; ( insert your columns here) create trigger a_insert_b; ( your trigger code here ) alter trigger a_insert_b disable. insert into a(columns) values(your values). And, the docs are online in several places. www.oradoc.com otn.oracle.com Jared Andrey Bronfin andreyb@elrontel To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] esoft.com cc: Sent by:Subject: A Trigger question [EMAIL PROTECTED] 08/22/01 08:56 AM Please respond to ORACLE-L Dear gurus ! sorry for this RTFMable question , just don't have the docs in front of me here . Assume i have a trigger my_trig that performs an insert into tableB after an insert into tableA . The question is : what happens if the trigger gets broken (either disabled , invalid or unable to do what it should do (for example if the tableB has reached maxextents) ) ? Does the user that inserts into tableA receive an ORA- error ? Is there a way to let the user insert into tableA , and capture the inserts into tableB that the trigger should perform , and do those inserts manually later ? Thanks a lot. Andrey. -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Andrey Bronfin INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Andrey Bronfin INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: A Trigger question (LENGTHY!)
THANKS A LOT FOR ALL WHO REPLIED !
-Original Message-
Sent: Wednesday, August 22, 2001 7:12 PM
To: Multiple recipients of list ORACLE-L
Yes. I was curious, so I did a little test:
Create 3 tables. Note the different datatypes.
SQL create table dbm_1
2 (a varchar2(5) not null);
Table created.
SQL create table dbm_2
2 (a number not null);
Table created.
SQL create table dbm_3
2 (a varchar2(5) not null);
Table created.
Now create a trigger to populate dbm_2 with the values from dbm_1.
Note that the trigger will fail if the datatypes mismatch:
SQL create or replace trigger dbm_1_ariu
2 after insert or update
3 on dbm_1
4 for each row
5 begin
6insert into dbm_2(a) values (:NEW.a);
7 end;
8 create trigger dbm_1_ariu
9 after insert or update
10 on dbm_1
11 for each row
12 begin
13insert into dbm_2(a) values (:NEW.a);
14 exception
15when others then
16 raise;
17 end;
18 /
Trigger created.
Test the trigger:
SQL insert into dbm_1 values (1);
1 row created.
SQL select count(*) from dbm_1;
COUNT(*)
--
1
SQL select count(*) from dbm_2;
COUNT(*)
--
1
SQL insert into dbm_1 values ('A');
insert into dbm_1 values ('A')
*
ERROR at line 1:
ORA-01722: invalid number
ORA-06512: at DBM.DBM_1_ARIU, line 5
ORA-04088: error during execution of trigger 'DBM.DBM_1_ARIU'
SQL rollback;
Rollback complete.
Now, modify the trigger to insert values into dbm_3 if the insert fails.
SQL create or replace trigger dbm_1_ariu
2 after insert or update
3 on dbm_1
4 for each row
5 begin
6insert into dbm_2(a) values (:NEW.a);
7 exception
8when others then
9 insert into dbm_3(a) values (:NEW.a);
10 end;
11
12 /
Trigger created.
SQL insert into
2
SQL insert into dbm_1(a) values (1);
1 row created.
SQL select count(*) from dbm_1;
COUNT(*)
--
1
SQL select count(*) from dbm_2;
COUNT(*)
--
1
SQL select count(*) from dbm_3;
COUNT(*)
--
0
SQL insert into dbm_1(a) values ('Brian');
1 row created.
SQL select count(*) from dbm_1;
COUNT(*)
--
2
SQL select count(*) from dbm_2;
COUNT(*)
--
1
SQL select count(*) from dbm_3;
COUNT(*)
--
1
Notice that the trigger handled the exception perfectly. Of
course, you'd want to code the exception more accurately, but
I think this example proves that it is possible.
Brian
--
--
| Brian McGraw -- Oracle DBA |
| Central Alabama Oracle Users Group |
||
| mailto:[EMAIL PROTECTED] |
| http://bmcgraw.home.mindspring.com |
--
Andrey Bronfin wrote:
Dear gurus !
sorry for this RTFMable question , just don't have the docs in front of me
here .
Assume i have a trigger my_trig that performs an insert into tableB after
an
insert into tableA .
The question is : what happens if the trigger gets broken (either disabled
,
invalid or unable to do what it should do (for example if the tableB has
reached maxextents) ) ?
Does the user that inserts into tableA receive an ORA- error ?
Is there a way to let the user insert into tableA , and capture the
inserts
into tableB that the trigger should perform , and do those inserts
manually
later ?
Thanks a lot.
Andrey.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Andrey Bronfin
INET: [EMAIL PROTECTED]
Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051
San Diego, California-- Public Internet access / Mailing Lists
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Brian McGraw
INET: [EMAIL PROTECTED]
Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051
San Diego, California-- Public Internet access / Mailing Lists
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
--
Please see the official ORACLE-L FAQ:
Re: A Trigger question (LENGTHY!)
Yes. I was curious, so I did a little test:
Create 3 tables. Note the different datatypes.
SQL create table dbm_1
2 (a varchar2(5) not null);
Table created.
SQL create table dbm_2
2 (a number not null);
Table created.
SQL create table dbm_3
2 (a varchar2(5) not null);
Table created.
Now create a trigger to populate dbm_2 with the values from dbm_1.
Note that the trigger will fail if the datatypes mismatch:
SQL create or replace trigger dbm_1_ariu
2 after insert or update
3 on dbm_1
4 for each row
5 begin
6insert into dbm_2(a) values (:NEW.a);
7 end;
8 create trigger dbm_1_ariu
9 after insert or update
10 on dbm_1
11 for each row
12 begin
13insert into dbm_2(a) values (:NEW.a);
14 exception
15when others then
16 raise;
17 end;
18 /
Trigger created.
Test the trigger:
SQL insert into dbm_1 values (1);
1 row created.
SQL select count(*) from dbm_1;
COUNT(*)
--
1
SQL select count(*) from dbm_2;
COUNT(*)
--
1
SQL insert into dbm_1 values ('A');
insert into dbm_1 values ('A')
*
ERROR at line 1:
ORA-01722: invalid number
ORA-06512: at DBM.DBM_1_ARIU, line 5
ORA-04088: error during execution of trigger 'DBM.DBM_1_ARIU'
SQL rollback;
Rollback complete.
Now, modify the trigger to insert values into dbm_3 if the insert fails.
SQL create or replace trigger dbm_1_ariu
2 after insert or update
3 on dbm_1
4 for each row
5 begin
6insert into dbm_2(a) values (:NEW.a);
7 exception
8when others then
9 insert into dbm_3(a) values (:NEW.a);
10 end;
11
12 /
Trigger created.
SQL insert into
2
SQL insert into dbm_1(a) values (1);
1 row created.
SQL select count(*) from dbm_1;
COUNT(*)
--
1
SQL select count(*) from dbm_2;
COUNT(*)
--
1
SQL select count(*) from dbm_3;
COUNT(*)
--
0
SQL insert into dbm_1(a) values ('Brian');
1 row created.
SQL select count(*) from dbm_1;
COUNT(*)
--
2
SQL select count(*) from dbm_2;
COUNT(*)
--
1
SQL select count(*) from dbm_3;
COUNT(*)
--
1
Notice that the trigger handled the exception perfectly. Of
course, you'd want to code the exception more accurately, but
I think this example proves that it is possible.
Brian
--
--
| Brian McGraw -- Oracle DBA |
| Central Alabama Oracle Users Group |
||
| mailto:[EMAIL PROTECTED] |
| http://bmcgraw.home.mindspring.com |
--
Andrey Bronfin wrote:
Dear gurus !
sorry for this RTFMable question , just don't have the docs in front of me
here .
Assume i have a trigger my_trig that performs an insert into tableB after an
insert into tableA .
The question is : what happens if the trigger gets broken (either disabled ,
invalid or unable to do what it should do (for example if the tableB has
reached maxextents) ) ?
Does the user that inserts into tableA receive an ORA- error ?
Is there a way to let the user insert into tableA , and capture the inserts
into tableB that the trigger should perform , and do those inserts manually
later ?
Thanks a lot.
Andrey.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Andrey Bronfin
INET: [EMAIL PROTECTED]
Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051
San Diego, California-- Public Internet access / Mailing Lists
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Brian McGraw
INET: [EMAIL PROTECTED]
Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051
San Diego, California-- Public Internet access / Mailing Lists
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
Re: A Trigger question
Tsk, tsk Andrey, this doesn't even require RTFM. :) create table a; ( insert your columns here) create table b; ( insert your columns here) create trigger a_insert_b; ( your trigger code here ) alter trigger a_insert_b disable. insert into a(columns) values(your values). And, the docs are online in several places. www.oradoc.com otn.oracle.com Jared Andrey Bronfin andreyb@elrontel To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] esoft.com cc: Sent by:Subject: A Trigger question [EMAIL PROTECTED] 08/22/01 08:56 AM Please respond to ORACLE-L Dear gurus ! sorry for this RTFMable question , just don't have the docs in front of me here . Assume i have a trigger my_trig that performs an insert into tableB after an insert into tableA . The question is : what happens if the trigger gets broken (either disabled , invalid or unable to do what it should do (for example if the tableB has reached maxextents) ) ? Does the user that inserts into tableA receive an ORA- error ? Is there a way to let the user insert into tableA , and capture the inserts into tableB that the trigger should perform , and do those inserts manually later ? Thanks a lot. Andrey. -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Andrey Bronfin INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
