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Optimizer code cleanups, no logic changes

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- Updated comments
- Added some extra DEBUG
- Indentation changes and break long lines
- Trivial code changes like:
  - Combining 2 statements in one
  - Reorder DBUG lines
  - Use a variable to store a pointer that is used multiple times
- Moved declaration of variables to start of loop/function
- Removed dead or commented code
- Removed wrong DBUG_EXECUTE code in best_extension_by_limited_search()
This commit is contained in:
Monty
2021-10-06 12:31:19 +03:00
committed by Sergei Petrunia
parent 87d4d7232c
commit 4062fc28bd
12 changed files with 283 additions and 230 deletions
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6
sql/sql_update.cc
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@ -833,9 +833,9 @@ int mysql_update(THD *thd,
table->use_all_columns();
/*
We are doing a search on a key that is updated. In this case
we go trough the matching rows, save a pointer to them and
update these in a separate loop based on the pointer.
We are doing a search on a key that is updated. In this case
we go trough the matching rows, save a pointer to them and
update these in a separate loop based on the pointer.
*/
explain->buf_tracker.on_scan_init();
IO_CACHE tempfile;