diff options
Diffstat (limited to 'sql/sql_class.h')
| -rw-r--r-- | sql/sql_class.h | 44 |
1 files changed, 38 insertions, 6 deletions
diff --git a/sql/sql_class.h b/sql/sql_class.h index 56dca05854e..aaa7bcf8104 100644 --- a/sql/sql_class.h +++ b/sql/sql_class.h @@ -1920,6 +1920,7 @@ class select_result :public Sql_alloc { protected: THD *thd; SELECT_LEX_UNIT *unit; + uint nest_level; public: select_result(); virtual ~select_result() {}; @@ -1956,6 +1957,12 @@ public: */ virtual void cleanup(); void set_thd(THD *thd_arg) { thd= thd_arg; } + /** + The nest level, if supported. + @return + -1 if nest level is undefined, otherwise a positive integer. + */ + int get_nest_level() { return nest_level; } #ifdef EMBEDDED_LIBRARY virtual void begin_dataset() {} #else @@ -2042,7 +2049,14 @@ class select_export :public select_to_file { bool is_unsafe_field_sep; bool fixed_row_size; public: - select_export(sql_exchange *ex) :select_to_file(ex) {} + /** + Creates a select_export to represent INTO OUTFILE <filename> with a + defined level of subquery nesting. + */ + select_export(sql_exchange *ex, uint nest_level_arg) :select_to_file(ex) + { + nest_level= nest_level_arg; + } ~select_export(); int prepare(List<Item> &list, SELECT_LEX_UNIT *u); bool send_data(List<Item> &items); @@ -2051,7 +2065,15 @@ public: class select_dump :public select_to_file { public: - select_dump(sql_exchange *ex) :select_to_file(ex) {} + /** + Creates a select_export to represent INTO DUMPFILE <filename> with a + defined level of subquery nesting. + */ + select_dump(sql_exchange *ex, uint nest_level_arg) : + select_to_file(ex) + { + nest_level= nest_level_arg; + } int prepare(List<Item> &list, SELECT_LEX_UNIT *u); bool send_data(List<Item> &items); }; @@ -2062,17 +2084,17 @@ class select_insert :public select_result_interceptor { TABLE_LIST *table_list; TABLE *table; List<Item> *fields; - ulonglong last_insert_id; + ulonglong autoinc_value_of_last_inserted_row; // not autogenerated + ulonglong autoinc_value_of_first_inserted_row; // autogenerated COPY_INFO info; bool insert_into_view; - bool is_bulk_insert_mode; select_insert(TABLE_LIST *table_list_par, TABLE *table_par, List<Item> *fields_par, List<Item> *update_fields, List<Item> *update_values, enum_duplicates duplic, bool ignore); ~select_insert(); int prepare(List<Item> &list, SELECT_LEX_UNIT *u); - int prepare2(void); + virtual int prepare2(void); bool send_data(List<Item> &items); virtual void store_values(List<Item> &values); void send_error(uint errcode,const char *err); @@ -2107,6 +2129,7 @@ public: void send_error(uint errcode,const char *err); bool send_eof(); void abort(); + int prepare2(void) { return 0; } }; #include <myisam.h> @@ -2468,7 +2491,16 @@ class select_dumpvar :public select_result_interceptor { ha_rows row_count; public: List<my_var> var_list; - select_dumpvar() { var_list.empty(); row_count= 0;} + /** + Creates a select_dumpvar to represent INTO <variable> with a defined + level of subquery nesting. + */ + select_dumpvar(uint nest_level_arg) + { + var_list.empty(); + row_count= 0; + nest_level= nest_level_arg; + } ~select_dumpvar() {} int prepare(List<Item> &list, SELECT_LEX_UNIT *u); bool send_data(List<Item> &items); |