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| -rw-r--r-- | doc/src/sgml/btree.sgml | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/doc/src/sgml/btree.sgml b/doc/src/sgml/btree.sgml index 336d026ea16..8bd0badb280 100644 --- a/doc/src/sgml/btree.sgml +++ b/doc/src/sgml/btree.sgml @@ -433,23 +433,6 @@ returns bool </sect1> -<sect1 id="btree-included-attributes"> - <title>Included attributes in B-tree indexes</title> - - <para> - As of <productname>PostgreSQL</productname> 11.0 there is an optional - INCLUDE clause, which allows to add non-key (included) attributes to index. - Those included attributes allow more queries to benefit from index-only scans. - We never use included attributes in ScanKeys for search. That allows us to - include into B-tree any datatypes, even those which don't have suitable - operator classes. Included columns only stored in regular tuples on leaf - pages. All pivot tuples on non-leaf pages and highkey tuples are truncated - to contain only key attributes. That helps to slightly reduce the size of - index. - </para> - -</sect1> - <sect1 id="btree-implementation"> <title>Implementation</title> |