mirror of
https://github.com/timescale/timescaledb.git
synced 2025-05-15 01:53:41 +08:00
6019775ec5
The current hypertable creation interface is heavily focused on a time
column, but since hypertables are focused on partitioning of not only
time columns, we introduce a more generic API that support different
types of keys for partitioning.
The new interface introduced new versions of create_hypertable,
add_dimension, and a replacement function `set_partitioning_interval`
that replaces `set_chunk_time_interval`. The new functions accept an
instance of dimension_info that can be constructed using constructor
functions `by_range` and `by_hash`, allowing a more versatile and
future-proof API.
For examples:
SELECT create_hypertable('conditions', by_range('time'));
SELECT add_dimension('conditions', by_hash('device'));
The old API remains, but will eventually be deprecated.
13 lines
620 B
SQL
13 lines
620 B
SQL
-- This file and its contents are licensed under the Apache License 2.0.
|
|
-- Please see the included NOTICE for copyright information and
|
|
-- LICENSE-APACHE for a copy of the license.
|
|
|
|
-- Deprecated partition hash function
|
|
CREATE OR REPLACE FUNCTION _timescaledb_functions.get_partition_for_key(val anyelement)
|
|
RETURNS int
|
|
AS '@MODULE_PATHNAME@', 'ts_get_partition_for_key' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
|
|
|
|
CREATE OR REPLACE FUNCTION _timescaledb_functions.get_partition_hash(val anyelement)
|
|
RETURNS int
|
|
AS '@MODULE_PATHNAME@', 'ts_get_partition_hash' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
|