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| author | Alexander Korotkov <akorotkov@postgresql.org> | 2024-05-06 14:35:58 +0300 |
|---|---|---|
| committer | Alexander Korotkov <akorotkov@postgresql.org> | 2024-05-06 14:36:36 +0300 |
| commit | d1d286d83c0eed695910cb20d970ea9bea2e5001 (patch) | |
| tree | 3efaf5b6598e109bdf24b81c5d9b165ce17ec9fe /doc/src | |
| parent | 81b2252e609cfa74550dd6804949485c094e4b85 (diff) | |
| download | postgresql-d1d286d83c0eed695910cb20d970ea9bea2e5001.tar.gz postgresql-d1d286d83c0eed695910cb20d970ea9bea2e5001.zip | |
Revert: Remove useless self-joins
This commit reverts d3d55ce5713 and subsequent fixes 2b26a694554, 93c85db3b5b,
b44a1708abe, b7f315c9d7d, 8a8ed916f73, b5fb6736ed3, 0a93f803f45, e0477837ce4,
a7928a57b9f, 5ef34a8fc38, 30b4955a466, 8c441c08279, 028b15405b4, fe093994db4,
489072ab7a9, and 466979ef031.
We are quite late in the release cycle and new bugs continue to appear. Even
though we have fixes for all known bugs, there is a risk of throwing many
bugs to end users.
The plan for self-join elimination would be to do more review and testing,
then re-commit in the early v18 cycle.
Reported-by: Tom Lane
Discussion: https://postgr.es/m/2422119.1714691974%40sss.pgh.pa.us
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index ffb6b023fd6..e93208b2e6a 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -5586,22 +5586,6 @@ ANY <replaceable class="parameter">num_sync</replaceable> ( <replaceable class=" </listitem> </varlistentry> - <varlistentry id="guc-enable_self_join_removal" xreflabel="enable_self_join_removal"> - <term><varname>enable_self_join_removal</varname> (<type>boolean</type>) - <indexterm> - <primary><varname>enable_self_join_removal</varname> configuration parameter</primary> - </indexterm> - </term> - <listitem> - <para> - Enables or disables the query planner's optimization which analyses - the query tree and replaces self joins with semantically equivalent - single scans. Takes into consideration only plain tables. - The default is <literal>on</literal>. - </para> - </listitem> - </varlistentry> - <varlistentry id="guc-enable-seqscan" xreflabel="enable_seqscan"> <term><varname>enable_seqscan</varname> (<type>boolean</type>) <indexterm> |