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Teodor Sigaev 8224de4f42 Indexes with INCLUDE columns and their support in B-tree ... This patch introduces INCLUDE clause to index definition. This clause specifies a list of columns which will be included as a non-key part in the index. The INCLUDE columns exist solely to allow more queries to benefit from index-only scans. Also, such columns don't need to have appropriate operator classes. Expressions are not supported as INCLUDE columns since they cannot be used in index-only scans. Index access methods supporting INCLUDE are indicated by amcaninclude flag in IndexAmRoutine. For now, only B-tree indexes support INCLUDE clause. In B-tree indexes INCLUDE columns are truncated from pivot index tuples (tuples located in non-leaf pages and high keys). Therefore, B-tree indexes now might have variable number of attributes. This patch also provides generic facility to support that: pivot tuples contain number of their attributes in t_tid.ip_posid. Free 13th bit of t_info is used for indicating that. This facility will simplify further support of index suffix truncation. The changes of above are backward-compatible, pg_upgrade doesn't need special handling of B-tree indexes for that. Bump catalog version Author: Anastasia Lubennikova with contribition by Alexander Korotkov and me Reviewed by: Peter Geoghegan, Tomas Vondra, Antonin Houska, Jeff Janes, David Rowley, Alexander Korotkov Discussion: https://www.postgresql.org/message-id/flat/56168952.4010101@postgrespro.ru		8 years ago
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access	Indexes with INCLUDE columns and their support in B-tree	8 years ago
bootstrap	Indexes with INCLUDE columns and their support in B-tree	8 years ago
catalog	Indexes with INCLUDE columns and their support in B-tree	8 years ago
commands	Indexes with INCLUDE columns and their support in B-tree	8 years ago
executor	Indexes with INCLUDE columns and their support in B-tree	8 years ago
foreign	Remove bogus "extern" annotations on function definitions.	8 years ago
jit	Fix a boatload of typos in C comments.	8 years ago
lib	Fix non-portable use of round().	8 years ago
libpq	Make be-secure-common.c more consistent for future SSL implementations	8 years ago
main	Update copyright for 2018	8 years ago
nodes	Indexes with INCLUDE columns and their support in B-tree	8 years ago
optimizer	Indexes with INCLUDE columns and their support in B-tree	8 years ago
parser	Indexes with INCLUDE columns and their support in B-tree	8 years ago
partitioning	Document partprune.c a little better	8 years ago
po	Translation updates	8 years ago
port	Fix and improve pg_atomic_flag fallback implementation.	8 years ago
postmaster	Allow on-line enabling and disabling of data checksums	8 years ago
regex	Update copyright for 2018	8 years ago
replication	Logical replication support for TRUNCATE	8 years ago
rewrite	Improve parse representation for MERGE	8 years ago
snowball	Avoid unnecessary use of pg_strcasecmp for already-downcased identifiers.	8 years ago
statistics	Fast ALTER TABLE ADD COLUMN with a non-NULL default	8 years ago
storage	Predicate locking in hash indexes.	8 years ago
tcop	Allow background workers to bypass datallowconn	8 years ago
tsearch	Add json(b)_to_tsvector function	8 years ago
utils	Indexes with INCLUDE columns and their support in B-tree	8 years ago
.gitignore	Add .gitignore entries for AIX-specific intermediate build artifacts.	10 years ago
Makefile	Faster partition pruning	8 years ago
common.mk	Remove PARTIAL_LINKING build mode.	8 years ago
nls.mk	Translation updates	8 years ago