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Warning:
As of November 12, 2021, CockroachDB v20.1 is no longer supported. For more details, refer to the Release Support Policy.
The RENAME TO statement is part of ALTER SEQUENCE, and changes the name of a sequence.
Warning:
You cannot rename a sequence that's being used in a table. To rename the sequence, drop the DEFAULT expressions that reference the sequence, rename the sequence, and add the DEFAULT expressions back.Note:
To understand how CockroachDB changes schema elements without requiring table locking or other user-visible downtime, see Online Schema Changes in CockroachDB.Required privileges
The user must have the CREATE privilege on the parent database.
Synopsis
Parameters
| Parameter | Description |
|---|---|
IF EXISTS |
Rename the sequence only if it exists; if it does not exist, do not return an error. |
current_name |
The current name of the sequence you want to modify. |
new_name |
The new name of the sequence, which must be unique to its database and follow these identifier rules. Name changes do not propagate to the table(s) using the sequence. |
Examples
Rename a Sequence
In this example, we will change the name of sequence customer_seq to customer_number.
> SELECT * FROM information_schema.sequences;
+------------------+-----------------+--------------------+-----------+-------------------+-------------------------+---------------+-------------+----------------------+---------------------+-----------+--------------+
| sequence_catalog | sequence_schema | sequence_name | data_type | numeric_precision | numeric_precision_radix | numeric_scale | start_value | minimum_value | maximum_value | increment | cycle_option |
+------------------+-----------------+--------------------+-----------+-------------------+-------------------------+---------------+-------------+----------------------+---------------------+-----------+--------------+
| def | db_2 | test_4 | INT | 64 | 2 | 0 | 1 | 1 | 9223372036854775807 | 1 | NO |
| def | test_db | customer_seq | INT | 64 | 2 | 0 | 101 | 1 | 9223372036854775807 | 2 | NO |
| def | test_db | desc_customer_list | INT | 64 | 2 | 0 | 1000 | -9223372036854775808 | -1 | -2 | NO |
| def | test_db | test_sequence3 | INT | 64 | 2 | 0 | 1 | 1 | 9223372036854775807 | 1 | NO |
+------------------+-----------------+--------------------+-----------+-------------------+-------------------------+---------------+-------------+----------------------+---------------------+-----------+--------------+
(4 rows)
> ALTER SEQUENCE test_db.customer_seq RENAME TO test_db.customer_number;
RENAME SEQUENCE
> SELECT * FROM information_schema.sequences;
+------------------+-----------------+--------------------+-----------+-------------------+-------------------------+---------------+-------------+----------------------+---------------------+-----------+--------------+
| sequence_catalog | sequence_schema | sequence_name | data_type | numeric_precision | numeric_precision_radix | numeric_scale | start_value | minimum_value | maximum_value | increment | cycle_option |
+------------------+-----------------+--------------------+-----------+-------------------+-------------------------+---------------+-------------+----------------------+---------------------+-----------+--------------+
| def | db_2 | test_4 | INT | 64 | 2 | 0 | 1 | 1 | 9223372036854775807 | 1 | NO |
| def | test_db | customer_number | INT | 64 | 2 | 0 | 101 | 1 | 9223372036854775807 | 2 | NO |
| def | test_db | desc_customer_list | INT | 64 | 2 | 0 | 1000 | -9223372036854775808 | -1 | -2 | NO |
| def | test_db | test_sequence3 | INT | 64 | 2 | 0 | 1 | 1 | 9223372036854775807 | 1 | NO |
+------------------+-----------------+--------------------+-----------+-------------------+-------------------------+---------------+-------------+----------------------+---------------------+-----------+--------------+
(4 rows)
Move a Sequence
In this example, we will move the sequence we renamed in the first example (customer_number) to a different database.
> SELECT * FROM information_schema.sequences;
+------------------+-----------------+--------------------+-----------+-------------------+-------------------------+---------------+-------------+----------------------+---------------------+-----------+--------------+
| sequence_catalog | sequence_schema | sequence_name | data_type | numeric_precision | numeric_precision_radix | numeric_scale | start_value | minimum_value | maximum_value | increment | cycle_option |
+------------------+-----------------+--------------------+-----------+-------------------+-------------------------+---------------+-------------+----------------------+---------------------+-----------+--------------+
| def | db_2 | test_4 | INT | 64 | 2 | 0 | 1 | 1 | 9223372036854775807 | 1 | NO |
| def | test_db | customer_number | INT | 64 | 2 | 0 | 101 | 1 | 9223372036854775807 | 2 | NO |
| def | test_db | desc_customer_list | INT | 64 | 2 | 0 | 1000 | -9223372036854775808 | -1 | -2 | NO |
| def | test_db | test_sequence3 | INT | 64 | 2 | 0 | 1 | 1 | 9223372036854775807 | 1 | NO |
+------------------+-----------------+--------------------+-----------+-------------------+-------------------------+---------------+-------------+----------------------+---------------------+-----------+--------------+
(4 rows)
> ALTER SEQUENCE test_db.customer_number RENAME TO db_2.customer_number;
RENAME SEQUENCE
> SELECT * FROM information_schema.sequences;
+------------------+-----------------+--------------------+-----------+-------------------+-------------------------+---------------+-------------+----------------------+---------------------+-----------+--------------+
| sequence_catalog | sequence_schema | sequence_name | data_type | numeric_precision | numeric_precision_radix | numeric_scale | start_value | minimum_value | maximum_value | increment | cycle_option |
+------------------+-----------------+--------------------+-----------+-------------------+-------------------------+---------------+-------------+----------------------+---------------------+-----------+--------------+
| def | db_2 | test_4 | INT | 64 | 2 | 0 | 1 | 1 | 9223372036854775807 | 1 | NO |
| def | db_2 | customer_number | INT | 64 | 2 | 0 | 101 | 1 | 9223372036854775807 | 2 | NO |
| def | test_db | desc_customer_list | INT | 64 | 2 | 0 | 1000 | -9223372036854775808 | -1 | -2 | NO |
| def | test_db | test_sequence3 | INT | 64 | 2 | 0 | 1 | 1 | 9223372036854775807 | 1 | NO |
+------------------+-----------------+--------------------+-----------+-------------------+-------------------------+---------------+-------------+----------------------+---------------------+-----------+--------------+
(4 rows)
See also
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