mirror of
https://github.com/timescale/timescaledb.git
synced 2025-05-22 13:40:56 +08:00
0f3e74215a
This simplifies the code and the access to the min/max metadata. Before we used a custom type, but now the min/max are just the same type as the underlying column and stored as two columns. This also removes the custom type that was used before.
33 lines
1.3 KiB
SQL
33 lines
1.3 KiB
SQL
-- 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.
|
|
|
|
\set ECHO errors
|
|
|
|
SELECT 'NULL::'||:'TYPE' as "NULLTYPE" \gset
|
|
|
|
--compress the data
|
|
SELECT count(compress_chunk(chunk.schema_name|| '.' || chunk.table_name)) as count_compressed
|
|
FROM _timescaledb_catalog.chunk chunk
|
|
INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
|
|
WHERE hypertable.table_name like :'HYPERTABLE_NAME' and chunk.compressed_chunk_id IS NULL;
|
|
|
|
SELECT
|
|
comp_hypertable.schema_name AS "COMP_SCHEMA_NAME",
|
|
comp_hypertable.table_name AS "COMP_TABLE_NAME"
|
|
FROM _timescaledb_catalog.hypertable uc_hypertable
|
|
INNER JOIN _timescaledb_catalog.hypertable comp_hypertable ON (comp_hypertable.id = uc_hypertable.compressed_hypertable_id)
|
|
WHERE uc_hypertable.table_name like :'HYPERTABLE_NAME' \gset
|
|
|
|
SELECT
|
|
bool_and(:SEGMENT_META_COL_MIN = true_min) as min_correct,
|
|
bool_and(:SEGMENT_META_COL_MAX = true_max) as max_correct
|
|
FROM
|
|
:"COMP_SCHEMA_NAME".:"COMP_TABLE_NAME", LATERAL (
|
|
SELECT min(decomp) true_min, max(decomp) true_max, ((count(*)-count(decomp)) > 0) true_has_null
|
|
FROM _timescaledb_internal.decompress_forward(:"ORDER_BY_COL_NAME", :NULLTYPE) decomp
|
|
)
|
|
as m;
|
|
|
|
\set ECHO all
|