mirror of
https://github.com/GreptimeTeam/greptimedb.git
synced 2026-10-30 15:36:59 +00:00
dennis zhuang
2e84833ac8
* feat(partition): support iceberg_hash in partition rules Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix(partition): reject partition column type changes and quote rule identifiers Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix(table): keep time index widening for partition columns Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * refactor(partition): replace PartitionFunction with IcebergHash Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * docs(partition): describe iceberg_hash in the function module Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix(meta): validate iceberg_hash partition bounds on ALTER and trim comments Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * test: quote partition rule identifiers in SHOW CREATE TABLE expectations Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * test(partition): check hash rules in information_schema and repartition target columns Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix(partition): coerce hash partition rules against the evaluation schema Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix(partition): keep quotes in partition column names when building filters Signed-off-by: Dennis Zhuang <killme2008@gmail.com> --------- Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
79 lines
2.1 KiB
SQL
79 lines
2.1 KiB
SQL
CREATE TABLE hash_routes (
|
|
host STRING,
|
|
tenant BIGINT UNSIGNED,
|
|
ts TIMESTAMP TIME INDEX,
|
|
v INT,
|
|
PRIMARY KEY (host, tenant)
|
|
)
|
|
PARTITION ON COLUMNS (host, tenant) (
|
|
iceberg_hash(host) < 0 AND tenant < 100,
|
|
iceberg_hash(host) < 0 AND tenant >= 100,
|
|
ICEBERG_HASH(host) >= 0 AND iceberg_hash(tenant) < 0,
|
|
0 <= iceberg_hash(host) AND iceberg_hash(tenant) >= 0
|
|
);
|
|
|
|
SHOW CREATE TABLE hash_routes;
|
|
|
|
SELECT partition_name, partition_description FROM information_schema.partitions WHERE table_name = 'hash_routes' ORDER BY partition_name;
|
|
|
|
INSERT INTO hash_routes VALUES
|
|
('a', 1, 1, 1),
|
|
('b', 100, 2, 2),
|
|
('server42', 18446744073709551615, 3, 3),
|
|
('中🙂', 0, 4, 4),
|
|
('', 7, 5, 5),
|
|
(NULL, 7, 6, 6),
|
|
('a', NULL, 7, 7);
|
|
|
|
SELECT * FROM hash_routes ORDER BY ts;
|
|
|
|
-- A filter on the hashed column must not prune the region holding the row.
|
|
SELECT * FROM hash_routes WHERE host = 'server42';
|
|
|
|
SELECT * FROM hash_routes WHERE host IS NULL;
|
|
|
|
DELETE FROM hash_routes WHERE host = 'a';
|
|
|
|
SELECT * FROM hash_routes ORDER BY ts;
|
|
|
|
DROP TABLE hash_routes;
|
|
|
|
CREATE TABLE hash_float (f DOUBLE, ts TIMESTAMP TIME INDEX, PRIMARY KEY (f))
|
|
PARTITION ON COLUMNS (f) (
|
|
iceberg_hash(f) < 0,
|
|
iceberg_hash(f) >= 0
|
|
);
|
|
|
|
CREATE TABLE hash_two_args (a STRING, b STRING, ts TIMESTAMP TIME INDEX, PRIMARY KEY (a, b))
|
|
PARTITION ON COLUMNS (a, b) (
|
|
iceberg_hash(a, b) < 0,
|
|
iceberg_hash(a, b) >= 0
|
|
);
|
|
|
|
CREATE TABLE hash_gap (a STRING, ts TIMESTAMP TIME INDEX, PRIMARY KEY (a))
|
|
PARTITION ON COLUMNS (a) (
|
|
iceberg_hash(a) < 0,
|
|
iceberg_hash(a) > 0
|
|
);
|
|
|
|
CREATE TABLE quoted_hash (
|
|
"host-name" STRING,
|
|
uid BIGINT,
|
|
ts TIMESTAMP TIME INDEX,
|
|
PRIMARY KEY ("host-name")
|
|
)
|
|
PARTITION ON COLUMNS ("host-name", uid) (
|
|
iceberg_hash("host-name") < 0,
|
|
iceberg_hash("host-name") >= 0 AND iceberg_hash(uid) < 0,
|
|
iceberg_hash("host-name") >= 0 AND iceberg_hash(uid) >= 0
|
|
);
|
|
|
|
SHOW CREATE TABLE quoted_hash;
|
|
|
|
-- A partition column keeps its type, even when nullable and outside the primary key.
|
|
ALTER TABLE quoted_hash MODIFY COLUMN uid DOUBLE;
|
|
|
|
ALTER TABLE quoted_hash MODIFY COLUMN uid STRING;
|
|
|
|
DROP TABLE quoted_hash;
|