Oracle Auto-Increment ID Guide

1 year ago
Jackson Davis
1 minute

In Oracle databases, the auto-increment ID is typically implemented using a Sequence. Below are the steps to add auto-increment ID data in Oracle.

  1. Create a Sequence object.
CREATE SEQUENCE sequence_name
    START WITH 1
    INCREMENT BY 1
    NOMAXVALUE;

– In this, sequence_name refers to the name of the sequence, START WITH specifies the initial value, INCREMENT BY specifies the increment step, and NOMAXVALUE indicates that the sequence has no maximum value limit.

  1. The following value.
INSERT INTO table_name (id, column1, column2, ...)
VALUES (sequence_name.NEXTVAL, value1, value2, ...);

table_name is the name of the table, id is the primary key column or a column that requires an auto-incremented ID, column1, column2, … are other columns, and value1, value2, … are the values for the corresponding columns.

  1. By executing the above SQL statement, you can add a data entry with an auto-incremented ID to the table.

Note: When executing the INSERT statement, each call to sequence_name.NEXTVAL will return a unique incremental ID.

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