mirror of
https://github.com/timescale/timescaledb.git
synced 2025-05-23 06:22:03 +08:00
b4a7108492
This commit integrates the SegmentMetaMinMax into the compression logic. It adds metadata columns to the compressed table and correctly sets it upon compression. We also fix several errors with datum detoasting in SegmentMetaMinMax
24 lines
672 B
PL/PgSQL
24 lines
672 B
PL/PgSQL
-- This file and its contents are licensed under the Timescale License.
|
|
-- Please see the included NOTICE for copyright information and
|
|
-- LICENSE-TIMESCALE for a copy of the license.
|
|
|
|
--------------------------
|
|
-- cheap rand generator --
|
|
--------------------------
|
|
create table rand_minstd_state(i bigint);
|
|
|
|
create function rand_minstd_advance(bigint) returns bigint
|
|
language sql immutable as
|
|
$$
|
|
select (16807 * $1) % 2147483647
|
|
$$;
|
|
|
|
create function gen_rand_minstd() returns bigint
|
|
language sql security definer as
|
|
$$
|
|
update rand_minstd_state set i = rand_minstd_advance(i) returning i
|
|
$$;
|
|
|
|
-- seed the random num generator
|
|
insert into rand_minstd_state values (321);
|