database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-08-30 06:01:21 +03:00
Code Activity

Support INCLUDE'd columns in SP-GiST.

Browse Source 
Not much to say here: does what it says on the tin.
We steal a previously-always-zero bit from the nextOffset
field of leaf index tuples in order to track whether there
is a nulls bitmap.  Otherwise it works about like included
columns in other index types.

Pavel Borisov, reviewed by Andrey Borodin and Anastasia Lubennikova,
and rather heavily editorialized on by me

Discussion: https://postgr.es/m/CALT9ZEFi-vMp4faht9f9Junb1nO3NOSjhpxTmbm1UGLMsLqiEQ@mail.gmail.com
This commit is contained in:
Tom Lane
2021-04-05 18:41:09 -04:00
parent 49f49defe7
commit 09c1c6ab4b
21 changed files with 630 additions and 232 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
doc/src/sgml/ref/create_index.sgml
View File

@@ -187,8 +187,8 @@ CREATE [ UNIQUE ] INDEX [ CONCURRENTLY ] [ [ IF NOT EXISTS ] <replaceable class=
</para>
<para>
Currently, the B-tree and the GiST index access methods support this
feature. In B-tree and the GiST indexes, the values of columns listed
Currently, the B-tree, GiST and SP-GiST index access methods support
this feature. In these indexes, the values of columns listed
in the <literal>INCLUDE</literal> clause are included in leaf tuples
which correspond to heap tuples, but are not included in upper-level
index entries used for tree navigation.
@@ -695,7 +695,10 @@ Indexes:
<para>
Currently, only the B-tree, GiST, GIN, and BRIN index methods support
multicolumn indexes. Up to 32 fields can be specified by default.
multiple-key-column indexes. Whether there can be multiple key
columns is independent of whether <literal>INCLUDE</literal> columns
can be added to the index. Indexes can have up to 32 columns,
including <literal>INCLUDE</literal> columns.
(This limit can be altered when building
<productname>PostgreSQL</productname>.) Only B-tree currently
supports unique indexes.