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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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expected	Indexes with INCLUDE columns and their support in B-tree	8 years ago
input	Diagnose incompatible OpenLDAP versions during build and test.	11 years ago
output	Diagnose incompatible OpenLDAP versions during build and test.	11 years ago
sql	Indexes with INCLUDE columns and their support in B-tree	8 years ago
.gitignore	…
Makefile	Prevent accidental linking of system-supplied copies of libpq.so etc.	8 years ago
dblink--1.0--1.1.sql	Fix typo in update scripts for some contrib modules.	12 years ago
dblink--1.1--1.2.sql	Fix parallel-safety markings for contrib/dblink.	9 years ago
dblink--1.2.sql	Fix parallel-safety markings for contrib/dblink.	9 years ago
dblink--unpackaged--1.0.sql	Fix typos in some error messages thrown by extension scripts when fed to psql.	11 years ago
dblink.c	Indexes with INCLUDE columns and their support in B-tree	8 years ago
dblink.control	Update dblink extension for parallel query.	9 years ago
pg_service.conf	Diagnose incompatible OpenLDAP versions during build and test.	11 years ago