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| author | Alexander Korotkov | 2024-04-06 21:58:09 +0000 |
|---|---|---|
| committer | Alexander Korotkov | 2024-04-06 22:18:44 +0000 |
| commit | 87c21bb9412c8ba2727dec5ebcd74d44c2232d11 (patch) | |
| tree | 3ce4f8e030b40814f251997793066a6bac115f1f /src/test/modules | |
| parent | 1adf16b8fba45f77056d91573cd7138ed9da4ebf (diff) | |
Implement ALTER TABLE ... SPLIT PARTITION ... command
This new DDL command splits a single partition into several parititions.
Just like ALTER TABLE ... MERGE PARTITIONS ... command, new patitions are
created using createPartitionTable() function with parent partition as the
template.
This commit comprises quite naive implementation which works in single process
and holds the ACCESS EXCLUSIVE LOCK on the parent table during all the
operations including the tuple routing. This is why this new DDL command
can't be recommended for large partitioned tables under a high load. However,
this implementation come in handy in certain cases even as is.
Also, it could be used as a foundation for future implementations with lesser
locking and possibly parallel.
Discussion: https://postgr.es/m/c73a1746-0cd0-6bdd-6b23-3ae0b7c0c582%40postgrespro.ru
Author: Dmitry Koval
Reviewed-by: Matthias van de Meent, Laurenz Albe, Zhihong Yu, Justin Pryzby
Reviewed-by: Alvaro Herrera, Robert Haas, Stephane Tachoires
Diffstat (limited to 'src/test/modules')
| -rw-r--r-- | src/test/modules/test_ddl_deparse/test_ddl_deparse.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c index 69920757b21..265ef2a5470 100644 --- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c +++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c @@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS) case AT_DetachPartitionFinalize: strtype = "DETACH PARTITION ... FINALIZE"; break; + case AT_SplitPartition: + strtype = "SPLIT PARTITION"; + break; case AT_MergePartitions: strtype = "MERGE PARTITIONS"; break; |