delta/mariadb-git.git/sql/sql_delete.cc, branch 10.2-connector-c-integ

Removed TABLE->sort to make it possible to have multiple active calls to

2016-03-22T21:44:52+00:00

filesort and init_read_record() for the same table.
This will simplify code for WINDOW FUNCTIONS (MDEV-6115)

- Filesort_info renamed to SORT_INFO and moved to filesort.h
- filesort now returns SORT_INFO
- init_read_record() now takes a SORT_INFO parameter.
- unique declaration is moved to uniques.h
- subselect caching of buffers is now more explicit than before
- filesort_buffer is now reusable even if rec_length has changed.
- filsort_free_buffers() and free_io_cache() calls are removed
- Remove one malloc() when using get_addon_fields()

Other things:
- Added --debug-assert-on-not-freed-memory option to make it easier to
  debug some not-freed-memory issues.

Merge branch '10.0' into 10.1

2015-11-19T14:52:14+00:00

Fixed MDEV-8408

2015-10-23T15:49:02+00:00

Assertion `inited==INDEX' failed in int handler::ha_index_first(uchar*)

The crash was because errors from init_read_record_idx() was not taken care of.

MDEV-6152: Remove calls to current_thd while creating Item

2015-08-27T19:29:11+00:00

- Part 4: Removing calls to sql_alloc() and sql_calloc()

Other things:
- Added current_thd in some places to make it clear that it's called (easier to remove later)
- Move memory allocation from Item_func_case::fix_length_and_dec() to Item_func_case::fix_fields()
- Added mem_root to some new calls
- Fixed some wrong UNINIT_VAR() calls
- Fixed a bug in generate_partition_syntax() in case of errors
- Added mem_root to argument to new thread_info
- Simplified my_parse_error() call in sql_yacc.yy

Make ANALYZE FORMAT=JSON show execution time for filesort element.

2015-08-07T14:41:35+00:00

- Renaming variables so that they don't shadow others (After this patch one can compile with -Wshadow and get much fewer warnings)

2015-07-06T17:24:14+00:00

- Changed ER(ER_...) to ER_THD(thd, ER_...) when thd was known or if there was many calls to current_thd in the same function.
- Changed ER(ER_..) to ER_THD_OR_DEFAULT(current_thd, ER...) in some places where current_thd is not necessary defined.
- Removing calls to current_thd when we have access to thd

Part of this is optimization (not calling current_thd when not needed),
but part is bug fixing for error condition when current_thd is not defined
(For example on startup and end of mysqld)

Notable renames done as otherwise a lot of functions would have to be changed:
- In JOIN structure renamed:
   examined_rows -> join_examined_rows
   record_count -> join_record_count
- In Field, renamed new_field() to make_new_field()

Other things:
- Added DBUG_ASSERT(thd == tmp_thd) in Item_singlerow_subselect() just to be safe.
- Removed old 'tab' prefix in JOIN_TAB::save_explain_data() and use members directly
- Added 'thd' as argument to a few functions to avoid calling current_thd.

MDEV-8282: crash in filesort() with simple ordered delete

2015-06-19T22:24:06+00:00

Handle the case where the optimizer decides to use
handler->delete_all_rows(), but then this call returns
HA_ERR_UNSUPPORTED and execution switches to regular
row-by-row deletion.

Merge tag 'mariadb-10.0.19' into 10.1

2015-06-01T13:51:25+00:00

[MDEV-8063]: Fix incorrect commit.

2015-05-19T12:04:09+00:00

The previous commit did not contain the reviewed changes
and introduced a behaviour problem for the explain statement.
This fixes the issue.

MDEV-8063: Unconditional ANALYZE DELETE does not delete rows

2015-05-19T11:57:47+00:00

When detecting a statement that can make use of ha_delete_all_rows(),
we refrained from running the statement when being presented
with the analyze or explain prefix.