postgres

History

Robert Haas f0e44751d7 Implement table partitioning. Table partitioning is like table inheritance and reuses much of the existing infrastructure, but there are some important differences. The parent is called a partitioned table and is always empty; it may not have indexes or non-inherited constraints, since those make no sense for a relation with no data of its own. The children are called partitions and contain all of the actual data. Each partition has an implicit partitioning constraint. Multiple inheritance is not allowed, and partitioning and inheritance can't be mixed. Partitions can't have extra columns and may not allow nulls unless the parent does. Tuples inserted into the parent are automatically routed to the correct partition, so tuple-routing ON INSERT triggers are not needed. Tuple routing isn't yet supported for partitions which are foreign tables, and it doesn't handle updates that cross partition boundaries. Currently, tables can be range-partitioned or list-partitioned. List partitioning is limited to a single column, but range partitioning can involve multiple columns. A partitioning "column" can be an expression. Because table partitioning is less general than table inheritance, it is hoped that it will be easier to reason about properties of partitions, and therefore that this will serve as a better foundation for a variety of possible optimizations, including query planner optimizations. The tuple routing based which this patch does based on the implicit partitioning constraints is an example of this, but it seems likely that many other useful optimizations are also possible. Amit Langote, reviewed and tested by Robert Haas, Ashutosh Bapat, Amit Kapila, Rajkumar Raghuwanshi, Corey Huinker, Jaime Casanova, Rushabh Lathia, Erik Rijkers, among others. Minor revisions by me.		9 years ago
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data	…
expected	Implement table partitioning.	9 years ago
input	Check that default_tablespace affects ALTER TABLE ADD UNIQUE/PRIMARY KEY.	9 years ago
output	Check that default_tablespace affects ALTER TABLE ADD UNIQUE/PRIMARY KEY.	9 years ago
sql	Implement table partitioning.	9 years ago
.gitignore	…
GNUmakefile	Fix misplacement of submake-generated-headers prerequisites.	9 years ago
Makefile	…
README	…
parallel_schedule	Add more tests for targetlist SRFs.	9 years ago
pg_regress.c	initdb pg_basebackup: Rename --noxxx options to --no-xxx	9 years ago
pg_regress.h	Update copyright for 2016	10 years ago
pg_regress_main.c	Set log_line_prefix and application name in test drivers	9 years ago
regress.c	Replace uses of SPI_modifytuple that intend to allocate in current context.	9 years ago
regressplans.sh	…
resultmap	…
serial_schedule	Add more tests for targetlist SRFs.	9 years ago
standby_schedule	…

README

Documentation concerning how to run these regression tests and interpret
the results can be found in the PostgreSQL manual, in the chapter
"Regression Tests".