pg_sequences is a system catalogue view providing human-readable information about sequences. It is based on the underlying system catalogue table pg_sequence.
pg_sequences was introduced in PostgreSQL 10 (commit 1753b1b0).
Notes
Some of the column names returned by pg_sequences match those contained in the sequence relation prior to PostgreSQL 10. See pg_sequence for further information.
Definition by PostgreSQL version
pg_sequences (PostgreSQL 13)
View "pg_catalog.pg_sequences"
Column | Type | Collation | Nullable | Default
---------------+---------+-----------+----------+---------
schemaname | name | | |
sequencename | name | | |
sequenceowner | name | | |
data_type | regtype | | |
start_value | bigint | | |
min_value | bigint | | |
max_value | bigint | | |
increment_by | bigint | | |
cycle | boolean | | |
cache_size | bigint | | |
last_value | bigint | | |
Documentation: pg_sequences
pg_sequences (PostgreSQL 12)
View "pg_catalog.pg_sequences"
Column | Type | Collation | Nullable | Default
---------------+---------+-----------+----------+---------
schemaname | name | | |
sequencename | name | | |
sequenceowner | name | | |
data_type | regtype | | |
start_value | bigint | | |
min_value | bigint | | |
max_value | bigint | | |
increment_by | bigint | | |
cycle | boolean | | |
cache_size | bigint | | |
last_value | bigint | | |
Documentation: pg_sequences
pg_sequences (PostgreSQL 11)
View "pg_catalog.pg_sequences"
Column | Type | Collation | Nullable | Default
---------------+---------+-----------+----------+---------
schemaname | name | | |
sequencename | name | | |
sequenceowner | name | | |
data_type | regtype | | |
start_value | bigint | | |
min_value | bigint | | |
max_value | bigint | | |
increment_by | bigint | | |
cycle | boolean | | |
cache_size | bigint | | |
last_value | bigint | | |
Documentation: pg_sequences
pg_sequences (PostgreSQL 10)
View "pg_catalog.pg_sequences"
Column | Type | Collation | Nullable | Default
---------------+---------+-----------+----------+---------
schemaname | name | | |
sequencename | name | | |
sequenceowner | name | | |
data_type | regtype | | |
start_value | bigint | | |
min_value | bigint | | |
max_value | bigint | | |
increment_by | bigint | | |
cycle | boolean | | |
cache_size | bigint | | |
last_value | bigint | | |
Documentation: pg_sequences
Change history
This view has not been modified since it was introduced in PostgreSQL 10.
- PostgreSQL 10
- added (commit 1753b1b0)
Examples
postgres=# CREATE SEQUENCE foo; CREATE SEQUENCE postgres=# SELECT * FROM pg_sequences WHERE sequencename='foo'; -[ RECORD 1 ]-+-------------------- schemaname | public sequencename | foo sequenceowner | postgres data_type | bigint start_value | 1 min_value | 1 max_value | 9223372036854775807 increment_by | 1 cycle | f cache_size | 1 last_value |
References
- PostgreSQL documentation: pg_sequences