diff options
Diffstat (limited to 'sql/sql_lex.h')
| -rw-r--r-- | sql/sql_lex.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sql/sql_lex.h b/sql/sql_lex.h index a8bee9bb59b..9e98ba0673d 100644 --- a/sql/sql_lex.h +++ b/sql/sql_lex.h @@ -527,6 +527,8 @@ public: ulong table_join_options; uint in_sum_expr; uint select_number; /* number of select (used for EXPLAIN) */ + int nest_level; /* nesting level of select */ + Item_sum *inner_sum_func_list; /* list of sum func in nested selects */ uint with_wild; /* item list contain '*' */ bool braces; /* SELECT ... UNION (SELECT ... ) <- this braces */ /* TRUE when having fix field called in processing of this SELECT */ @@ -770,12 +772,23 @@ typedef struct st_lex SQL_LIST proc_list, auxilliary_table_list, save_list; create_field *last_field; + Item_sum *in_sum_func; udf_func udf; HA_CHECK_OPT check_opt; // check/repair options HA_CREATE_INFO create_info; LEX_MASTER_INFO mi; // used by CHANGE MASTER USER_RESOURCES mqh; ulong type; + /* + This variable is used in post-parse stage to declare that sum-functions, + or functions which have sense only if GROUP BY is present, are allowed. + For example in a query + SELECT ... FROM ...WHERE MIN(i) == 1 GROUP BY ... HAVING MIN(i) > 2 + MIN(i) in the WHERE clause is not allowed in the opposite to MIN(i) + in the HAVING clause. Due to possible nesting of select construct + the variable can contain 0 or 1 for each nest level. + */ + nesting_map allow_sum_func; enum_sql_command sql_command, orig_sql_command; thr_lock_type lock_option; enum SSL_type ssl_type; /* defined in violite.h */ @@ -794,6 +807,7 @@ typedef struct st_lex uint grant, grant_tot_col, which_columns; uint fk_delete_opt, fk_update_opt, fk_match_option; uint slave_thd_opt, start_transaction_opt; + int nest_level; /* In LEX representing update which were transformed to multi-update stores total number of tables. For LEX representing multi-delete |