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Document BRIN a bit more thoroughly

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The chapter "Interfacing Extensions To Indexes" and CREATE OPERATOR
CLASS reference page were missed when BRIN was added.  We document
all our other index access methods there, so make sure BRIN complies.

Author: Álvaro Herrera
Reported-By: Julien Rouhaud, Tom Lane
Reviewed-By: Emre Hasegeli
Discussion: https://www.postgresql.org/message-id/56CF604E.9000303%40dalibo.com
Backpatch: 9.5, where BRIN was introduced
This commit is contained in:
Alvaro Herrera
2016-03-10 13:15:08 -03:00
parent 9d90388247
commit a3a8309d45
2 changed files with 106 additions and 4 deletions
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4
doc/src/sgml/ref/create_opclass.sgml
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@@ -172,7 +172,7 @@ CREATE OPERATOR CLASS <replaceable class="parameter">name</replaceable> [ DEFAUL
the input data type(s) of the function (for B-tree comparison functions
and hash functions)
or the class's data type (for B-tree sort support functions and all
functions in GiST, SP-GiST and GIN operator classes). These defaults
functions in GiST, SP-GiST, GIN and BRIN operator classes). These defaults
are correct, and so <replaceable
class="parameter">op_type</replaceable> need not be specified in
<literal>FUNCTION</> clauses, except for the case of a B-tree sort
@@ -232,7 +232,7 @@ CREATE OPERATOR CLASS <replaceable class="parameter">name</replaceable> [ DEFAUL
<para>
The data type actually stored in the index. Normally this is
the same as the column data type, but some index methods
(currently GiST and GIN) allow it to be different. The
(currently GiST, GIN and BRIN) allow it to be different. The
<literal>STORAGE</> clause must be omitted unless the index
method allows a different type to be used.
</para>