diff options
Diffstat (limited to 'sql/sql_window.h')
| -rw-r--r-- | sql/sql_window.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/sql/sql_window.h b/sql/sql_window.h index 6a56fc84392..e9e86e7c9ef 100644 --- a/sql/sql_window.h +++ b/sql/sql_window.h @@ -195,14 +195,20 @@ class Window_funcs_sort : public Sql_alloc public: bool setup(THD *thd, SQL_SELECT *sel, List_iterator<Item_window_func> &it, st_join_table *join_tab); - bool exec(JOIN *join); + /* + Execute the window functions requiring the previously set up sort order. + + @param keep_filesort_result: Do not delete the filesort_result after + sorting the table if it is set to true. + Otherwise free it. + */ + bool exec(JOIN *join, bool keep_filesort_result); void cleanup() { delete filesort; } +private: friend class Window_funcs_computation; -private: Window_func_runner runner; - /* Window functions can be computed over this sorting */ Filesort *filesort; }; @@ -225,7 +231,7 @@ class Window_funcs_computation : public Sql_alloc List<Window_funcs_sort> win_func_sorts; public: bool setup(THD *thd, List<Item_window_func> *window_funcs, st_join_table *tab); - bool exec(JOIN *join); + bool exec(JOIN *join, bool keep_final_sort_result); Explain_aggr_window_funcs *save_explain_plan(MEM_ROOT *mem_root, bool is_analyze); void cleanup(); |