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subqueries made printable

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new EXPLAIN parameter to show real query as it was interpreted
(SCRUM) (WL#1274)
This commit is contained in:
bell@sanja.is.com.ua
2003-10-16 15:54:47 +03:00
parent ddf4d1e529
commit a7bdd19707
18 changed files with 735 additions and 181 deletions
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14
sql/sql_lex.h
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@ -79,6 +79,10 @@ enum enum_sql_command {
SQLCOM_END
};
// describe/explain types
#define DESCRIBE_NORMAL 1
#define DESCRIBE_EXTENDED 2
typedef List<Item> List_item;
typedef struct st_lex_master_info
@ -321,7 +325,9 @@ public:
int prepare(THD *thd, select_result *result, bool tables_and_fields_initied);
int exec();
int cleanup();
void print(String *str);
friend void mysql_init_query(THD *thd);
friend int subselect_union_engine::exec();
private:
@ -462,6 +468,9 @@ public:
init_select();
}
bool setup_ref_array(THD *thd, uint order_group_num);
void print(THD *thd, String *str);
static void print_order(String *str, ORDER *order);
void print_limit(THD *thd, String *str);
};
typedef class st_select_lex SELECT_LEX;
@ -535,9 +544,10 @@ typedef struct st_lex
uint fk_delete_opt, fk_update_opt, fk_match_option;
uint param_count;
uint slave_thd_opt;
uint8 describe;
bool drop_primary, drop_if_exists, drop_temporary, local_file;
bool in_comment, ignore_space, verbose, simple_alter, no_write_to_binlog;
bool derived_tables, describe;
bool derived_tables;
bool safe_to_cache_query;
st_lex() {}
inline void uncacheable()