In PG15, For GENERATED columns, all dependencies of the generation
expression are recorded as NORMAL dependencies of the column itself.
This requires CASCADE to drop generated cols with the original col.
PRE PG15, dependencies were recorded as AUTO, with which
generated columns are silently dropped with the original column.
Relevant PG commit:
cb02fcb4c95bae08adaca1202c2081cfc81a28b5
* Remove if conditions with PG_VERSION_NUM < 13
* Remove server_above_twelve(&eleven) checks from tests
* Fix tests
* Remove pg12 and pg11 alternative test output files
* Remove pg12 specific normalization rules
* Some more if conditions in the code
* Change RemoteCollationIdExpression and some pg12/pg13 comments
* Remove some more normalization rules
This PR makes all of the features open source that were previously only
available in Citus Enterprise.
Features that this adds:
1. Non blocking shard moves/shard rebalancer
(`citus.logical_replication_timeout`)
2. Propagation of CREATE/DROP/ALTER ROLE statements
3. Propagation of GRANT statements
4. Propagation of CLUSTER statements
5. Propagation of ALTER DATABASE ... OWNER TO ...
6. Optimization for COPY when loading JSON to avoid double parsing of
the JSON object (`citus.skip_jsonb_validation_in_copy`)
7. Support for row level security
8. Support for `pg_dist_authinfo`, which allows storing different
authentication options for different users, e.g. you can store
passwords or certificates here.
9. Support for `pg_dist_poolinfo`, which allows using connection poolers
in between coordinator and workers
10. Tracking distributed query execution times using
citus_stat_statements (`citus.stat_statements_max`,
`citus.stat_statements_purge_interval`,
`citus.stat_statements_track`). This is disabled by default.
11. Blocking tenant_isolation
12. Support for `sslkey` and `sslcert` in `citus.node_conninfo`
Columnar: support relation options with ALTER TABLE.
Use ALTER TABLE ... SET/RESET to specify relation options rather than
alter_columnar_table_set() and alter_columnar_table_reset().
Not only is this more ergonomic, but it also allows better integration
because it can be treated like DDL on a regular table. For instance,
citus can use its own ProcessUtility_hook to distribute the new
settings to the shards.
DESCRIPTION: Columnar: support relation options with ALTER TABLE.
Postgres doesn't allow inserting into columns having GENERATED ALWAYS
AS (...) STORED expressions.
For this reason, when executing undistribute_table or an alter_* udf,
we should skip copying such columns.
This is not bad since Postgres would already generate such columns.
When finding columns owning sequences, we shouldn't rely on atthasdef
since it might be true when column has GENERATED ALWAYS AS (...)
STORED expression.
If the generated column does not come at the end of the column list,
columnNameList doesn't line up with the column indexes. Seek past
CREATE TABLE test_table (
test_id int PRIMARY KEY,
gen_n int GENERATED ALWAYS AS (1) STORED,
created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);
SELECT create_distributed_table('test_table', 'test_id');
Would raise ERROR: cannot cast 23 to 1184
Use partition column's collation for range distributed tables
Don't allow non deterministic collations for hash distributed tables
CoPartitionedTables: don't compare unequal types
naisila
Naisila Puka
Jelte Fennema
jeff-davis
Halil Ozan Akgul
Marco Slot
Onur Tirtir
Nils Dijk
Philip Dubé
SaitTalhaNisanci
Hanefi Önaldı
Onder Kalaci