MDEV-33679 Spider group by handler: skip on multiple equalities
The spider group by handler is created in
JOIN::make_aggr_tables_info(), by which time calls to
substitute_for_best_equal_field() should have already removed all the
multiple equalities (i.e. Item_equal, with MULT_EQUAL_FUNC func_type).
Therefore, if there is still such items, it is deemed as an optimizer
bug and should be skipped.
MDEV-28992 Spider group by handler: Push down TIMESTAMPDIFF function
Also removed ITEM_FUNC_TIMESTAMPDIFF_ARE_PUBLIC.
Similar to pr#2225, with the testcase adapted from that patch:
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From 884f7c6df16236748ca975339e0b1c267e195309 Mon Sep 17 00:00:00 2001
From: "Norio Akagi (norakagi)" <email address hidden>
Date: Wed, 3 Aug 2022 23:30:34 -0700
Subject: [PATCH] [MDEV-28992] Push down TIMESTAMP_DIFF in spider
This changes so that TIMESTAMP_DIFF function in a query is pushed down and works natively in Spider.
Instead of directly accessing item's member, now we can rely on a public accessor method to make it work.
Unit tests are added under spider.pushdown_timestamp_diff.
All new code of the whole pull request, including one or several files
that are either new files or modified ones, are contributed under the
BSD-new license. I am contributing on behalf of my employer
Amazon Web Services, Inc.
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MDEV-20094 InnoDB blob allocation allocates extra extents
- InnoDB reserves the free extents unnecessarily during blob
page allocation even though btr_page_alloc() can handle
reserving the extent when the existing ran out of pages to be used.
MDEV-21102: Server crashes in JOIN_CACHE::write_record_data upon EXPLAIN with subqueries
JOIN_CACHE has a light-weight initialization mode that's targeted at
EXPLAINs. In that mode, JOIN_CACHE objects are not able to execute.
Light-weight mode was used whenever the statement was an EXPLAIN. However
the EXPLAIN can execute subqueries, provided they enumerate less than
@@expensive_subquery_limit rows.
Make sure we use light-weight initialization mode only when the select is
more expensive @@expensive_subquery_limit.
Also add an assert into JOIN_CACHE::put_record() which prevents its use
if it was initialized for EXPLAIN only.
a618ff2...
by
Daniele Sciascia <email address hidden>
MDEV-33216 stack-use-after-return in Wsrep_schema_impl::open_table()
Fix a case of stack-use-after-return reported by ASAN in
Wsrep_schema_impl::open_table(). This function has a stack allocated
TABLE_LIST object and return TABLE_LIST::table to the caller.
Changed the function to take a TABLE_LIST pointer as argument.
Signed-off-by: Julius Goryavsky <email address hidden>
c811393...
by
Dmitry Shulga <email address hidden>
MDEV-14959: the follow-up patch to turn on the option -DWITH_PROTECT_STATEMENT_MEMROOT by default
