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| author | Teodor Sigaev <teodor@sigaev.ru> | 2016-04-08 19:31:49 +0300 |
|---|---|---|
| committer | Teodor Sigaev <teodor@sigaev.ru> | 2016-04-08 19:45:59 +0300 |
| commit | 386e3d7609c49505e079c40c65919d99feb82505 (patch) | |
| tree | dd8f434e5401588c2b4f9e2068f396c5ce198cf6 /src/include/access/amapi.h | |
| parent | 339025c68f95d3cb2c42478109cafeaf414c7fe0 (diff) | |
| download | postgresql-386e3d7609c49505e079c40c65919d99feb82505.tar.gz postgresql-386e3d7609c49505e079c40c65919d99feb82505.zip | |
CREATE INDEX ... INCLUDING (column[, ...])
Now indexes (but only B-tree for now) can contain "extra" column(s) which
doesn't participate in index structure, they are just stored in leaf
tuples. It allows to use index only scan by using single index instead
of two or more indexes.
Author: Anastasia Lubennikova with minor editorializing by me
Reviewers: David Rowley, Peter Geoghegan, Jeff Janes
Diffstat (limited to 'src/include/access/amapi.h')
| -rw-r--r-- | src/include/access/amapi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/include/access/amapi.h b/src/include/access/amapi.h index 35f1061b3a1..17e652c61b0 100644 --- a/src/include/access/amapi.h +++ b/src/include/access/amapi.h @@ -142,6 +142,8 @@ typedef struct IndexAmRoutine bool amclusterable; /* does AM handle predicate locks? */ bool ampredlocks; + /* does AM support columns included with clause INCLUDING? */ + bool amcaninclude; /* type of data stored in index, or InvalidOid if variable */ Oid amkeytype; |