How to Fix the 'sequence must have same owner as table' Error When Adding an Auto-Increment Primary Key in PostgreSQL?

Adding Auto Increment Primary Key in PostgreSQL: Resolving the Sequence Owner Error

Question:

One seeks assistance in adding an auto increment primary key to an existing PostgreSQL table. An attempt to define a new column with BIGSERIAL data type resulted in an error stating, "sequence must have same owner as table it is linked to." The underlying issue is the discrepancy between the sequence owner and the table owner.

Answer:

To resolve this issue, it is recommended to execute the following command:

ALTER TABLE your_table ADD COLUMN key_column BIGSERIAL PRIMARY KEY;

Additional Considerations:

• Ensure that the command is executed using the same database user who created the table.
• The key_column placeholder should be replaced with the desired name for the new primary key column.

This modified command should successfully create the auto increment primary key without the need to recreate the table. It establishes the sequence with the same owner as the table, resolving the sequence owner mismatch error.

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