In PostgreSQL, when trying to get the current value of a sequence, the following errors occur:
select currval('SEQUENCE_NAME');
ERROR: currval of sequence "SEQUENCE_NAME" is not yet defined in this session
SQL state: 55000
SOLUTION
Query PG_SEQUENCES to get the last value of sequences.
=> \d pg_sequences
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 | | |
