Should any right be infringed, it is totally unintentional.
Drop me an email and I will promptly and gladly rectify it.
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.
You can also perform more complicated updates in Oracle.
You may wish to update records in one table based on values in another table.
This means that you have to select on all the fields which comprise a unique key -- a non-unique primary key is not sufficient.
Without uniqueness, you are reduced to something like @Paul Karr's loop -- and if there is not a unique correlation, then more than one target row may be updated for each source row.
CREATE SEQUENCE gokhan.sample_seq START WITH 1000; SELECT last_number FROM user_sequences WHERE sequence_name = 'SAMPLE_SEQ'; LAST_NUMBER ----------- 1000 ALTER SEQUENCE gokhan.sample_seq INCREMENT BY -500; SELECT gokhan.sample_seq.
Oracle Database returns a set of columns in the order in which the columns were specified when the object was created.
A query that selects rows from two or more tables, views, or materialized views is a join.
If you need to change its value, you should re-create the sequence.
On the other hand, we can use a trick to change the value of a sequence without recreating it.