https://stackoverflow.com › questions › 68809678

If you want to get the current value, you may want to try SELECT * FROM my_list_id_seq and use the corresponding value from the last_value column: postgres=# CREATE SEQUENCE my_list_id_seq; CREATE SEQUENCE postgres=# CREATE TABLE IF NOT EXISTS my_list (id int PRIMARY KEY UNIQUE NOT NULL DEFAULT nextval('my_list_id_seq'), mycardno int); CREATE ...

https://stackoverflow.com › questions › 18232714

If you want to claim an ID and return it, you can use nextval(), which advances the sequence without inserting any data. Note that if this is a SERIAL column, you need to find the sequence's name based on the table and column name, as follows: Select nextval(pg_get_serial_sequence('my_table', 'id')) as new_id; There is no cast-iron guarantee ...

https://stackoverflow.com › questions › 13393604

You can use pg_sequence_last_value() if you know the name of the sequence: SELECT pg_sequence_last_value('public.person_id_seq');

https://postgresql-tutorial.com › postgresql-how-to-get-current-and-next-values-of-sequence

SELECT currval('my_sequence'); Next Value (nextval): To get the next value of a sequence and increment the sequence, you can use the nextval function. Here’s the syntax: SELECT nextval('sequence_name'); Again, replace 'sequence_name' with the name of the sequence you want to retrieve the next value for.Example: SELECT nextval('my_sequence');

https://www.postgresql.org › docs › current › functions-sequence.html

The two-parameter form sets the sequence's last_value field to the specified value and sets its is_called field to true, meaning that the next nextval will advance the sequence before returning a value. The value that will be reported by currval is also set to the specified value.

https://database.guide › how-nextval-works-in-postgresql

In PostgreSQL, the nextval() function is used to advance sequence objects to their next value and return that value. We pass the name of the sequence when we call the function. This assumes that the sequence object exists. Syntax. The syntax goes like this: nextval ( regclass )

https://www.postgresqltutorial.com › postgresql-tutorial › postgresql-sequences

To get the next value from the sequence, you use the nextval() function: SELECT nextval ( 'mysequence' ); Code language: SQL (Structured Query Language) ( sql ) If you execute the statement again, you will get the next value from the sequence:

https://postgrespro.com › docs › postgresql › current › functions-sequence

The sequence functions, listed in Table 9.52, provide simple, multiuser-safe methods for obtaining successive sequence values from sequence objects. Table 9.52. Sequence Functions. Function. Description. nextval ( regclass ) → bigint. Advances the sequence object to its next value and returns that value.

https://www.postgresql.org › docs › current › view-pg-sequences.html

The view pg_sequences provides access to useful information about each sequence in the database. Table 54.23. pg_sequences Columns. The last_value column will read as null if any of the following are true: The sequence has not been read from yet. The current user does not have USAGE or SELECT privilege on the sequence.