https://stackoverflow.com › questions › 18232714

SELECT nextval('person_id_seq'); This will output an integer value which will be the next id added to the table. You can turn this into a single command as mentioned in the accepted answer above. SELECT nextval(pg_get_serial_sequence('person','id'));

https://postgresql-tutorial.com › postgresql-how-to-get-current-and-next-values-of-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://database.guide › how-nextval-works-in-postgresql

We can use the nextval() function when inserting data into a table. This allows us to have a column that contains sequential values across all rows. Let’s create a table, then use an INSERT statement with the nextval() function:

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.

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://www.postgresql.org › docs › current › sql-altersequence.html

ALTER SEQUENCE changes the parameters of an existing sequence generator. Any parameters not specifically set in the ALTER SEQUENCE command retain their prior settings. You must own the sequence to use ALTER SEQUENCE. To change a sequence's schema, you must also have CREATE privilege on the new schema.

https://www.postgresql.org › docs › current › sql-expressions.html

The expression syntax allows the calculation of values from primitive parts using arithmetic, logical, set, and other operations. A value expression is one of the following: A constant or literal value. A column reference. A positional parameter reference, in the body of a function definition or prepared statement.

https://dba.stackexchange.com › questions › 253090

It looks like select nextval('table_name') actually does the value increment. My goal is to "predict" the nextval value on all tables in the database without actually making any incrementation. This should be a read-only operation.

https://www.delftstack.com › howto › postgres › nextval-postgres

NEXTVAL() tends to advance an object to another value and return it. SEQUENCE OBJECTS are just single-row tables created from SEQUENCES in PostgreSQL. The NEXTVAL() function is defined under the SEQUENCE MANIPULATION FUNCTIONS.