Chatting usa online sex show gratis - Updating a sequence
This can be useful when you need to create a unique number to act as a primary key. The first sequence number that it would use is 1 and each subsequent number would increment by 1 (ie: 2,3,4,...}. If you omit the MAXVALUE option, your sequence will automatically default to: Now that you've created a sequence object to simulate an autonumber field, we'll cover how to retrieve a value from this sequence object.
To retrieve the next value in the sequence order, you need to use option specifies how many sequence values will be stored in memory for faster access.
Let’s say we have a sequence and its value is 1000, and we want to set it to 500.
A sequence is a user-defined schema bound object that generates a sequence of numeric values according to a specification.
New values are generated from a sequence by calling the NEXT VALUE FOR function.
For example, if the last value used by the Oracle sequence was 100 and you would like to reset the sequence to serve 225 as the next value.
Oracle does not let you change the value of a sequence.
For information about the options, see CREATE SEQUENCE.