I know this is an old thread and I just started working with triggers. I want to check if the data being inserted is already in the table and if not insert it:
create or replace trigger t_triggername before insert on tbl_tablename for each row begin if(:new.user_id <> :old.user_id) then insert into tbl_tablename(user_id, location) values (:new.user_id, :new.location); end if; end;
what if I wanted to keep the user but only update location if the user is already in the table. I've tried doing it this way:
create or replace trigger t_triggername before insert on tbl_tablename for each row begin if(:new.user_id <> :old.user_id) then insert into tbl_tablename(user_id, location)
i've a problem in using store procedure. My code is to get postcode id when i pass a postcode. First it will check the postcode that i pass if already exist it will get postcode id but if not it will insert new postcode and get a new postcode id created then pass into ASP system. When i try run this stock procedure i got error as below :-
SQL> exec INSERT_PCODE_GMDS BEGIN INSERT_PCODE_GMDS; END;
* ERROR at line 1: ORA-06550: line 1, column 7: PLS-00306: wrong number or types of arguments in call to 'INSERT_PCODE_GMDS' ORA-06550: line 1, column 7: PL/SQL: Statement ignored
( Postcode1 IN varchar2, citiID IN Number, county_ID IN number, city_name IN varchar2, sub_cityID IN number, pcode OUT number ) [code].......
in ASP to pass and get back the values i used code as below. but i think the problems occurs in my stock procedure
I wonder if there is some tiny technique to trace a duplicity on a block label without committing the records ( Maybe on Validate or new record instance)
I have one procedure to check duplicate but what I remember that there is something very smart provided from oracle to do that.
But i think if table CON_TEST doen't exist, an error message will appear. I know that in SQL Server we can check if table exists or not. So, i wonder if we can do that in Oracle?
By the way, is there any way to run a file script that contents TABLES, STORED, ... on a developed PC connect to oracle db server? (in case, i'm developing on PC, using Net Service Name to conect to Oracle DB Server)
How to check table properties? (desc only shows if it is null)If I do desc emp, it only shows the Employee description. But Doesnt tell if table is having primary key or not?
I created a table but I want to add the Unique check to it as I forgot to apply it to the table when I created it.Is it possible to make the field Unique after having created the table or do I have to drop the table and re-create it?
can a table level check constraints have conditional checking (if else clause or case conditional structures) and checks which are limited through something like a where clause which inside the table level check constraints.And can a table level check constraints refer to a column in another table column which should have a the same value.
Usually we check 1 row of data in table and compare if they exist, i want to compare different set of row all together to comapre and take the decisions
in the above example i have to check for d_key for set of row exist in target or not, so by above example d_key 1 and 3 has save value in 2 different rows so i want to check if the combination of rows
103499 1 99262 2
as a set appear in source then do nothing else insert so first time d_key 1 both records will insert but for d_key has same set in 2 rows will not be inseted. the number of row can be more than 2 also . so for the given key if we have 3 rows in source then i have to compare all the 3 same set of row in target exist of . in the target i don't have any extra column.
We have a primary and a standby (Physical Dataguard) site.
1. How do i check if the database is encrypted or not on primary as well as standby ? 2. If primary and standby are encrypted, does the data that gets replicated from primary to standby also in encrypted form ? If not, does it make sense to encrypt that ?
Is there a seeded function by which I can check all the rows which stored dates in varchar column.
I have a table say test (test_data varchar2(100));
Now I will insert all types of records into the table varchar,number dates and then i will write q query to etch all those records only which has dates only
INSERT INTO test(1); INSERT INTO test('ABC'); INSERT INTO test(SYSDATE); INSERT INTO test(TO_CHAR(SYSDATE,'DD-MON-YYYY')); INSERT INTO test(TO_CHAR(SYSDATE,'DD-MON-YYYY HH24:MI:SS')); INSERT INTO test('15/01/2012'); ... commit;
I have a block based on a view. The view is a join on 2 tables, the first table always brings back 4 records for each parameter passed to it in the where clause. The second table is outer joined to the first table and may contain no matched records or some matched records. In some cases there will be a 1:1 match to the first table.
The problem is how to create the table handler procedure correctly. I need to update 2 tables in the table handler procedure.
The block is only enabled for update (to preserve the 4 rows), however some values on the block correspond to values from the second table. When you update a row in the block, how do you know if you are actually inserting a row into the second table or updating an already existing record on the 2nd table.
i have a field in my table office i got field office_code ,this field is been used in diffirent tables as foreign key is there a sql i can wirte to see all tables who have used this field as foreign key.
I have 20 or so tables, partitioned by range, indexed etc...soon these tables will be gone and i have to recreate them with the same definitions. I have to write a procedure(or script, it's up to me) which must:
1- check if table A exist in the scheme 2- if not create the table as the original ddl.
for 1 i've used smth like ------------------------- SELECT count(*) INTO a FROM user_objects WHERE object_name='A';
[code]....
so my question is how and what is the cleanest and fastest way to do this.? it's a lot DDLs,
By default the DBMS_STATS package runs once every 24 hours to collect statistics for database objects and Oracle collects new statistics when enough of the data (about 10%) has changed.
My question here is how to check the table has changed 10% in database?
I'm new to oracle DB,i've been given access to Oracle as a user. when i try to create a table under my default schema i get the insufficient privileges error.
How do i check from the system views if i have create table privilege under my own schema?
when i press when button pressed trigger, i want first the form will delete all the previous data and then populate the data from the table, that's why i used clear_block first, but this clear_code is not working here. my coding is given below
go_block('show'); clear_block(NO_VALIDATE); declare cursor c1 is select * from qtr_demand order by 1; begin [code]..........
Let us say, if i enter empno 10 (which is not there in database) in FIND Screen --> press FIND Button, it's showing up 'QUERY CAUSED NO RECORDS', Till this point it's working fine;. But after this, if i press CTR+F11 in block A, it's not pulling records. only this case it's not pulling records.
But if i enter something else in FIND Screen, if it returns any data, then if i press CTR+F11,it's pulling all records.
why it's failing to pull records if i try to query data in first case only.
