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MySQL 5.6.14 Source Code Document
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MySQL 5.6.14 Source Code Document
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#include <item.h>
Public Member Functions | |
| Item_empty_string (const char *header, uint length, const CHARSET_INFO *cs=NULL) | |
| void | make_field (Send_field *field) |
 Public Member Functions inherited from Item_partition_func_safe_string | |
| Item_partition_func_safe_string (const Name_string name, uint length, const CHARSET_INFO *cs=NULL) | |
| Public Member Functions inherited from Item_string | |
| Item_string (const char *str, uint length, const CHARSET_INFO *cs, Derivation dv=DERIVATION_COERCIBLE, uint repertoire=MY_REPERTOIRE_UNICODE30) | |
| Item_string (const CHARSET_INFO *cs, Derivation dv=DERIVATION_COERCIBLE) | |
| Item_string (const Name_string name_par, const char *str, uint length, const CHARSET_INFO *cs, Derivation dv=DERIVATION_COERCIBLE, uint repertoire=MY_REPERTOIRE_UNICODE30) | |
| void | set_str_with_copy (const char *str_arg, uint length_arg) |
| void | set_repertoire_from_value () |
| enum Type | type () const |
| double | val_real () |
| longlong | val_int () |
| String * | val_str (String *) |
| my_decimal * | val_decimal (my_decimal *) |
| bool | get_date (MYSQL_TIME *ltime, uint fuzzydate) |
| bool | get_time (MYSQL_TIME *ltime) |
| type_conversion_status | save_in_field (Field *field, bool no_conversions) |
| enum Item_result | result_type () const |
| enum_field_types | field_type () const |
| bool | basic_const_item () const |
| bool | eq (const Item *item, bool binary_cmp) const |
| Item * | clone_item () |
| Item * | safe_charset_converter (const CHARSET_INFO *tocs) |
| Item * | charset_converter (const CHARSET_INFO *tocs, bool lossless) |
| void | append (char *str, uint length) |
| virtual void | print (String *str, enum_query_type query_type) |
| bool | check_partition_func_processor (uchar *int_arg) |
| bool | is_cs_specified () const |
| void | set_cs_specified (bool cs_specified) |
| Public Member Functions inherited from Item_basic_constant | |
| void | set_used_tables (table_map map) |
| table_map | used_tables () const |
| void | cleanup () |
| Public Member Functions inherited from Item | |
| Item (THD *thd, Item *item) | |
| void | rename (char *new_name) |
| void | init_make_field (Send_field *tmp_field, enum enum_field_types type) |
| virtual Field * | make_string_field (TABLE *table) |
| virtual bool | fix_fields (THD *, Item **) |
| virtual void | fix_after_pullout (st_select_lex *parent_select, st_select_lex *removed_select) |
| void | quick_fix_field () |
| type_conversion_status | save_in_field_no_warnings (Field *field, bool no_conversions) |
| virtual void | save_org_in_field (Field *field) |
| virtual type_conversion_status | save_safe_in_field (Field *field) |
| virtual bool | send (Protocol *protocol, String *str) |
| virtual enum Item_result | numeric_context_result_type () const |
| enum Item_result | temporal_with_date_as_number_result_type () const |
| virtual Item_result | cast_to_int_type () const |
| virtual enum_field_types | string_field_type () const |
| virtual enum_monotonicity_info | get_monotonicity_info () const |
| virtual longlong | val_int_endpoint (bool left_endp, bool *incl_endp) |
| virtual longlong | val_date_temporal () |
| virtual longlong | val_time_temporal () |
| longlong | val_temporal_by_field_type () |
| longlong | val_temporal_with_round (enum_field_types type, uint8 dec) |
| ulonglong | val_uint () |
| virtual String * | val_str_ascii (String *str) |
| virtual bool | val_bool () |
| virtual String * | val_nodeset (String *) |
| type_conversion_status | save_time_in_field (Field *field) |
| type_conversion_status | save_date_in_field (Field *field) |
| type_conversion_status | save_str_value_in_field (Field *field, String *result) |
| virtual Field * | get_tmp_table_field () |
| virtual Field * | tmp_table_field (TABLE *t_arg) |
| virtual const char * | full_name () const |
| virtual double | val_result () |
| virtual longlong | val_int_result () |
| virtual longlong | val_time_temporal_result () |
| virtual longlong | val_date_temporal_result () |
| virtual String * | str_result (String *tmp) |
| virtual my_decimal * | val_decimal_result (my_decimal *val) |
| virtual bool | val_bool_result () |
| virtual bool | is_null_result () |
| virtual table_map | resolved_used_tables () const |
| virtual table_map | not_null_tables () const |
| virtual cond_result | eq_cmp_result () const |
| uint | float_length (uint decimals_par) const |
| virtual uint | decimal_precision () const |
| int | decimal_int_part () const |
| virtual uint | time_precision () |
| virtual uint | datetime_precision () |
| virtual bool | const_item () const |
| virtual bool | const_during_execution () const |
| void | print_item_w_name (String *, enum_query_type query_type) |
| void | print_for_order (String *str, enum_query_type query_type, bool used_alias) |
| virtual void | update_used_tables () |
| virtual void | split_sum_func (THD *thd, Ref_ptr_array ref_pointer_array, List< Item > &fields) |
| void | split_sum_func2 (THD *thd, Ref_ptr_array ref_pointer_array, List< Item > &fields, Item **ref, bool skip_registered) |
| virtual bool | get_timeval (struct timeval *tm, int *warnings) |
| virtual bool | get_date_result (MYSQL_TIME *ltime, uint fuzzydate) |
| virtual bool | is_null () |
| virtual void | update_null_value () |
| virtual void | top_level_item () |
| virtual void | set_result_field (Field *field) |
| virtual bool | is_result_field () |
| virtual bool | is_bool_func () |
| virtual void | save_in_result_field (bool no_conversions) |
| virtual void | no_rows_in_result () |
| virtual Item * | copy_or_same (THD *thd) |
| virtual Item * | copy_andor_structure (THD *thd, bool real_items=false) |
| virtual Item * | real_item () |
| virtual Item * | get_tmp_table_item (THD *thd) |
| virtual const CHARSET_INFO * | compare_collation () |
| virtual const CHARSET_INFO * | charset_for_protocol (void) const |
| virtual bool | walk (Item_processor processor, bool walk_subquery, uchar *arg) |
| virtual Item * | transform (Item_transformer transformer, uchar *arg) |
| virtual Item * | compile (Item_analyzer analyzer, uchar **arg_p, Item_transformer transformer, uchar *arg_t) |
| virtual void | traverse_cond (Cond_traverser traverser, void *arg, traverse_order order) |
| virtual bool | intro_version (uchar *int_arg) |
| virtual bool | remove_dependence_processor (uchar *arg) |
| virtual bool | remove_fixed (uchar *arg) |
| virtual bool | cleanup_processor (uchar *arg) |
| virtual bool | collect_item_field_processor (uchar *arg) |
| virtual bool | add_field_to_set_processor (uchar *arg) |
| virtual bool | remove_column_from_bitmap (uchar *arg) |
| virtual bool | find_item_in_field_list_processor (uchar *arg) |
| virtual bool | change_context_processor (uchar *context) |
| virtual bool | reset_query_id_processor (uchar *query_id_arg) |
| virtual bool | find_item_processor (uchar *arg) |
| virtual bool | register_field_in_read_map (uchar *arg) |
| virtual bool | inform_item_in_cond_of_tab (uchar *join_tab_index) |
| virtual bool | clean_up_after_removal (uchar *arg) |
| virtual bool | cache_const_expr_analyzer (uchar **arg) |
| virtual Item * | cache_const_expr_transformer (uchar *arg) |
| virtual bool | item_field_by_name_analyzer (uchar **arg) |
| virtual Item * | item_field_by_name_transformer (uchar *arg) |
| virtual bool | equality_substitution_analyzer (uchar **arg) |
| virtual Item * | equality_substitution_transformer (uchar *arg) |
| virtual bool | subst_argument_checker (uchar **arg) |
| virtual bool | explain_subquery_checker (uchar **arg) |
| virtual Item * | explain_subquery_propagator (uchar *arg) |
| virtual Item * | equal_fields_propagator (uchar *arg) |
| virtual bool | set_no_const_sub (uchar *arg) |
| virtual Item * | replace_equal_field (uchar *arg) |
| virtual bool | check_valid_arguments_processor (uchar *bool_arg) |
| virtual bool | find_function_processor (uchar *arg) |
| virtual Item * | this_item () |
| virtual const Item * | this_item () const |
| virtual Item ** | this_item_addr (THD *thd, Item **addr_arg) |
| virtual uint | cols () |
| virtual Item * | element_index (uint i) |
| virtual Item ** | addr (uint i) |
| virtual bool | check_cols (uint c) |
| virtual bool | null_inside () |
| virtual void | bring_value () |
| Field * | tmp_table_field_from_field_type (TABLE *table, bool fixed_length) |
| virtual Item_field * | field_for_view_update () |
| virtual Item * | neg_transformer (THD *thd) |
| virtual Item * | update_value_transformer (uchar *select_arg) |
| void | delete_self () |
| virtual bool | is_splocal () |
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virtual Settable_routine_parameter * | get_settable_routine_parameter () |
| bool | is_temporal_with_date () const |
| bool | is_temporal_with_date_and_time () const |
| bool | is_temporal_with_time () const |
| bool | is_temporal () const |
| bool | has_compatible_context (Item *item) const |
| virtual Field::geometry_type | get_geometry_type () const |
| String * | check_well_formed_result (String *str, bool send_error=0) |
| bool | eq_by_collation (Item *item, bool binary_cmp, const CHARSET_INFO *cs) |
| virtual bool | is_expensive () |
| virtual bool | can_be_evaluated_now () const |
| uint32 | max_char_length () const |
| void | fix_length_and_charset (uint32 max_char_length_arg, const CHARSET_INFO *cs) |
| void | fix_char_length (uint32 max_char_length_arg) |
| void | fix_char_length_ulonglong (ulonglong max_char_length_arg) |
| void | fix_length_and_charset_datetime (uint32 max_char_length_arg) |
| void | fix_length_and_dec_and_charset_datetime (uint32 max_char_length_arg, uint8 dec_arg) |
| virtual bool | is_outer_field () const |
| bool | is_blob_field () const |
| virtual bool | has_subquery () const |
| virtual bool | has_stored_program () const |
| virtual bool | created_by_in2exists () const |
| Whether this Item was created by the IN->EXISTS subquery transformation. | |
Additional Inherited Members | |
| Public Types inherited from Item | |
| enum | Type { FIELD_ITEM = 0, FUNC_ITEM, SUM_FUNC_ITEM, STRING_ITEM, INT_ITEM, REAL_ITEM, NULL_ITEM, VARBIN_ITEM, COPY_STR_ITEM, FIELD_AVG_ITEM, DEFAULT_VALUE_ITEM, PROC_ITEM, COND_ITEM, REF_ITEM, FIELD_STD_ITEM, FIELD_VARIANCE_ITEM, INSERT_VALUE_ITEM, SUBSELECT_ITEM, ROW_ITEM, CACHE_ITEM, TYPE_HOLDER, PARAM_ITEM, TRIGGER_FIELD_ITEM, DECIMAL_ITEM, XPATH_NODESET, XPATH_NODESET_CMP, VIEW_FIXER_ITEM } |
| enum | cond_result { COND_UNDEF, COND_OK, COND_TRUE, COND_FALSE } |
| enum | traverse_order { POSTFIX, PREFIX } |
| Static Public Member Functions inherited from Item | |
| static void * | operator new (size_t size) throw () |
| static void * | operator new (size_t size, MEM_ROOT *mem_root) throw () |
| static void | operator delete (void *ptr, size_t size) |
| static void | operator delete (void *ptr, MEM_ROOT *mem_root) |
| static const CHARSET_INFO * | default_charset () |
| Public Attributes inherited from Item | |
| uint | rsize |
| String | str_value |
| Item_name_string | item_name |
| Item_name_string | orig_name |
| Item * | next |
| uint32 | max_length |
| int | marker |
| uint8 | decimals |
| my_bool | maybe_null |
| my_bool | null_value |
| my_bool | unsigned_flag |
| my_bool | with_sum_func |
| my_bool | fixed |
| DTCollation | collation |
| Item_result | cmp_context |
| Protected Member Functions inherited from Item | |
| String * | val_string_from_real (String *str) |
| String * | val_string_from_int (String *str) |
| String * | val_string_from_decimal (String *str) |
| String * | val_string_from_date (String *str) |
| String * | val_string_from_datetime (String *str) |
| String * | val_string_from_time (String *str) |
| my_decimal * | val_decimal_from_real (my_decimal *decimal_value) |
| my_decimal * | val_decimal_from_int (my_decimal *decimal_value) |
| my_decimal * | val_decimal_from_string (my_decimal *decimal_value) |
| my_decimal * | val_decimal_from_date (my_decimal *decimal_value) |
| my_decimal * | val_decimal_from_time (my_decimal *decimal_value) |
| longlong | val_int_from_decimal () |
| longlong | val_int_from_date () |
| longlong | val_int_from_time () |
| longlong | val_int_from_datetime () |
| double | val_real_from_decimal () |
| bool | get_date_from_string (MYSQL_TIME *ltime, uint flags) |
| bool | get_date_from_real (MYSQL_TIME *ltime, uint flags) |
| bool | get_date_from_decimal (MYSQL_TIME *ltime, uint flags) |
| bool | get_date_from_int (MYSQL_TIME *ltime, uint flags) |
| bool | get_date_from_time (MYSQL_TIME *ltime) |
| bool | get_date_from_numeric (MYSQL_TIME *ltime, uint fuzzydate) |
| bool | get_date_from_non_temporal (MYSQL_TIME *ltime, uint fuzzydate) |
| bool | get_time_from_string (MYSQL_TIME *ltime) |
| bool | get_time_from_real (MYSQL_TIME *ltime) |
| bool | get_time_from_decimal (MYSQL_TIME *ltime) |
| bool | get_time_from_int (MYSQL_TIME *ltime) |
| bool | get_time_from_date (MYSQL_TIME *ltime) |
| bool | get_time_from_datetime (MYSQL_TIME *ltime) |
| bool | get_time_from_numeric (MYSQL_TIME *ltime) |
| bool | get_time_from_non_temporal (MYSQL_TIME *ltime) |
| Protected Attributes inherited from Item | |
| my_bool | with_subselect |
| my_bool | with_stored_program |
| bool | tables_locked_cache |
Item_empty_string – is a utility class to put an item into List<Item> which is then used in protocol.send_result_set_metadata() when sending SHOW output to the client.
1.8.1.2 
