How can a sequence be created in Oracle?

1 year ago
Sophia Anderson
2 minutes

In Oracle database, you can use the following syntax to create a sequence:

Set up a sequence with the specified parameters, such as increment, start value, maximum and minimum values, cycling, and caching.

sequence_name is the name of the sequence to be created.

Here are some optional parameters available:

  1. INCREMENT BY: specifies the increment value for the sequence, default is 1.
  2. BEGIN WITH: The initial value of the specified sequence, by default is 1.
  3. MAXVALUE: Specifies the maximum value of the sequence. Once this value is reached, the sequence will stop incrementing. If not specified, the default maximum value is 10^27.
  4. MINVALUE: Specifies the minimum value for the sequence. If the sequence reaches the minimum value, it will stop decreasing. If not specified, the default minimum value is 1.
  5. If the sequence cycles back to the minimum value after reaching the maximum value, specify CYCLE. If not specified, the sequence will stop incrementing.
  6. CACHE: Specifies the number of values cached for a sequence. By default, Oracle caches 20 sequence values.

For example, the following statement will create a sequence named “my_sequence” with a starting value of 1 and an increment of 1 each time:

Create a sequence called “my_sequence” that starts at 1 and increments by 1.

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