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Refactor Sort_param::init_for_filesort

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No logic changes.
Extract some of init_for_filesort logic into a separate function:
* Sort_param::setup_lengths_and_limit can be used to fill in the various
  xxx_length members of Sort_param, without having to allocate any of the
  other buffers.

Reviewer: Monty
This commit is contained in:
Vicențiu Ciorbaru
2022-07-02 22:43:22 +03:00
committed by Sergei Petrunia
parent 50e9f7aee5
commit b70290869e
2 changed files with 44 additions and 21 deletions
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10
sql/sql_sort.h
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@@ -590,10 +590,14 @@ public:
*/
tmp_buffer.set_charset(&my_charset_bin);
}
void init_for_filesort(uint sortlen, TABLE *table,
ha_rows maxrows, Filesort *filesort);
void (*unpack)(TABLE *);
void init_for_filesort(TABLE *table, Filesort *filesort,
uint sortlen, ha_rows limit_rows_arg);
void setup_lengths_and_limit(TABLE *table,
uint sortlen,
uint addon_length,
ha_rows limit_rows_arg);
void (*unpack)(TABLE *);
/// Enables the packing of addons if possible.
void try_to_pack_addons(ulong max_length_for_sort_data);