Search results
11 lis 2015 · You could use the SQL%ROWCOUNT Oracle variable: UPDATE table1 SET field2 = value2, field3 = value3 WHERE field1 = value1; IF (SQL%ROWCOUNT = 0) THEN INSERT INTO table (field1, field2, field3) VALUES (value1, value2, value3); END IF;
19 lip 2022 · update customers_dim cd set ( full_name, update_datetime ) = ( select cs.full_name, systimestamp from customers_stage cs where cs.customer_id = cd.customer_id ) where exists ( select null from customers_stage ce where ce.customer_id = cd.customer_id )
The Oracle UPDATE statement is used to update existing records in a table in an Oracle database. There are 2 syntaxes for an update query in Oracle depending on whether you are performing a traditional update or updating one table with data from another table.
15 kwi 2019 · I want a trigger to do an UPDATE instead of an INSERT. A trigger could be something like: create trigger test_trg before insert on test_tbl for each row begin if exists (select * from test_tbl where id = :new.id) then -- update record else -- insert into table end if; end;
11 cze 2020 · You issue a select statement to find if the record exists and then do an update if the record exists OR directly update and check with sql%rowcount if sql%rowcount <= 0 then raise exception... end if; there is no FK relationships or checks during update
19 lip 2022 · UPDATE-if-exists INSERT-if-not-exists (aka UPSERT) data with MERGE Scripts. Often when loading data you want to add new rows and change the existing ones. So you need "update if exists, insert if not exists" logic, aka UPSERT.
Use the UPDATE statement to change existing values in a table or in the base table of a view or the master table of a materialized view. Prerequisites. For you to update values in a table, the table must be in your own schema or you must have the UPDATE object privilege on the table. For you to update values in the base table of a view:
