|
| | Create_field_wrapper (const Create_field *fld) |
| |
| Item_result | result_type () const final |
| |
| Item_result | numeric_context_result_type () const final |
| | Returns Item_result type of a field when it appears in numeric context such as: SELECT time_column + 1; SELECT SUM(time_column); Examples: More...
|
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| enum_field_types | type () const final |
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| uint32 | max_display_length () const final |
| |
| const CHARSET_INFO * | charset () const final |
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| uint32 | pack_length () const final |
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| type_conversion_status | store (const char *, size_t, const CHARSET_INFO *) final |
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| type_conversion_status | store (double) final |
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| type_conversion_status | store (longlong, bool) final |
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| type_conversion_status | store_decimal (const my_decimal *) final |
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| double | val_real (void) const final |
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| longlong | val_int (void) const final |
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| my_decimal * | val_decimal (my_decimal *) const final |
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| String * | val_str (String *, String *) const final |
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| int | cmp (const uchar *, const uchar *) const final |
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| void | sql_type (String &) const final |
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| size_t | make_sort_key (uchar *, size_t) const final |
| | Writes a copy of the current value in the record buffer, suitable for sorting using byte-by-byte comparison. More...
|
| |
| Field * | clone (MEM_ROOT *mem_root) const final |
| | Makes a shallow copy of the Field object. More...
|
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| bool | is_wrapper_field () const final |
| | If true, it's a Create_field_wrapper (a sub-class of Field used during CREATE/ALTER that we mustn't cast to other sub-classes of Field that aren't on a direct path of inheritance, e.g. More...
|
| |
| virtual size_t | make_sort_key (uchar *buff, size_t length) const=0 |
| | Writes a copy of the current value in the record buffer, suitable for sorting using byte-by-byte comparison. More...
|
| |
| virtual size_t | make_sort_key (uchar *buff, size_t length, size_t trunc_pos) const |
| | Writes a copy of the current value in the record buffer, suitable for sorting using byte-by-byte comparison. More...
|
| |
| | Field (const Field &)=default |
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| void | operator= (Field &)=delete |
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| bool | has_insert_default_general_value_expression () const |
| | Checks if the field is marked as having a general expression to generate default values. More...
|
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| bool | has_insert_default_datetime_value_expression () const |
| | Checks if the field is marked as having a datetime value expression to generate default values on inserts. More...
|
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| bool | has_update_default_datetime_value_expression () const |
| | Checks if the field is marked as having a datetime value expression to generate default values on updates. More...
|
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| bool | has_insert_default_constant_expression () const |
| | Checks if the field is marked as having a constant expression to generate default values. More...
|
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| uchar * | get_null_ptr () |
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| virtual void | set_field_length (uint32 length) |
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| virtual void | add_to_cost (CostOfItem *cost) const |
| | Update '*cost' with the fact that this Field is accessed. More...
|
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| bool | is_flag_set (unsigned flag) const |
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| void | set_flag (unsigned flag) |
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| void | clear_flag (unsigned flag) |
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| uint32 | all_flags () const |
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| virtual bool | is_unsigned () const |
| | Whether the field is signed or not. More...
|
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| bool | is_gcol () const |
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| bool | is_virtual_gcol () const |
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| void | set_hidden (dd::Column::enum_hidden_type hidden) |
| | Sets the hidden type for this field. More...
|
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| dd::Column::enum_hidden_type | hidden () const |
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| bool | is_hidden () const |
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| bool | is_hidden_by_system () const |
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| bool | is_hidden_by_user () const |
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| bool | is_field_for_functional_index () const |
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| | Field (uchar *ptr_arg, uint32 length_arg, uchar *null_ptr_arg, uchar null_bit_arg, uchar auto_flags_arg, const char *field_name_arg) |
| | This is used as a table name when the table structure is not set up. More...
|
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| virtual | ~Field ()=default |
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| void | reset_warnings () |
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| void | set_tmp_nullable () |
| | Turn on temporary nullability for the field. More...
|
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| void | reset_tmp_nullable () |
| | Turn off temporary nullability for the field. More...
|
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| void | reset_tmp_null () |
| | Reset temporary NULL value for field. More...
|
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| void | set_tmp_null () |
| | Set field to temporary value NULL. More...
|
| |
| bool | is_tmp_nullable () const |
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| bool | is_tmp_null () const |
| |
| virtual type_conversion_status | store_packed (longlong nr) |
| | Store a temporal value in packed longlong format into a field. More...
|
| |
| virtual type_conversion_status | store_time (MYSQL_TIME *ltime, uint8 dec_arg) |
| | Store MYSQL_TIME value with the given amount of decimal digits into a field. More...
|
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| type_conversion_status | store_time (MYSQL_TIME *ltime) |
| | Store MYSQL_TYPE value into a field when the number of fractional digits is not important or is not know. More...
|
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| type_conversion_status | store (const char *to, size_t length, const CHARSET_INFO *cs, enum_check_fields check_level) |
| |
| virtual longlong | val_time_temporal () const |
| | Returns TIME value in packed longlong format. More...
|
| |
| virtual longlong | val_date_temporal () const |
| | Returns DATE/DATETIME value in packed longlong format. More...
|
| |
| virtual longlong | val_time_temporal_at_utc () const |
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| virtual longlong | val_date_temporal_at_utc () const |
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| longlong | val_temporal_by_field_type () const |
| | Returns "native" packed longlong representation of a TIME or DATE/DATETIME field depending on field type. More...
|
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| String * | val_str (String *str) const |
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| String * | val_int_as_str (String *val_buffer, bool unsigned_flag) const |
| | Interpret field value as an integer but return the result as a string. More...
|
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| virtual bool | str_needs_quotes () const |
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| virtual Item_result | cmp_type () const |
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| virtual Item_result | cast_to_int_type () const |
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| bool | gcol_expr_is_equal (const Create_field *field) const |
| | Check whether generated columns' expressions are the same. More...
|
| |
| virtual bool | eq (const Field *field) const |
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| virtual bool | eq_def (const Field *field) const |
| |
| virtual uint32 | pack_length_in_rec () const |
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| virtual bool | compatible_field_size (uint metadata, Relay_log_info *, uint16, int *order) const |
| | Check to see if field size is compatible with destination. More...
|
| |
| virtual uint | pack_length_from_metadata (uint field_metadata) const |
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| virtual uint | row_pack_length () const |
| |
| int | save_field_metadata (uchar *first_byte) |
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| virtual uint32 | data_length (ptrdiff_t row_offset=0) const |
| |
| virtual uint32 | max_data_length () const |
| | Get the maximum size of the data in packed format. More...
|
| |
| virtual type_conversion_status | reset () |
| |
| virtual bool | get_timestamp (my_timeval *tm, int *warnings) const |
| | Returns a UTC component in struct timeval format. More...
|
| |
| virtual void | store_timestamp (const my_timeval *) |
| | Stores a timestamp value in timeval format in a field. More...
|
| |
| virtual void | set_default () |
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| void | evaluate_insert_default_function () |
| | Evaluates the INSERT default function and stores the result in the field. More...
|
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| void | evaluate_update_default_function () |
| | Evaluates the UPDATE default function, if one exists, and stores the result in the record buffer. More...
|
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| virtual bool | binary () const |
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| virtual bool | zero_pack () const |
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| virtual enum ha_base_keytype | key_type () const |
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| virtual uint32 | key_length () const |
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| virtual enum_field_types | real_type () const |
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| virtual enum_field_types | binlog_type () const |
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| int | cmp (const uchar *str) const |
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| virtual int | cmp_max (const uchar *a, const uchar *b, uint max_len) const |
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| virtual int | cmp_binary (const uchar *a, const uchar *b, uint32 max_length=~0L) const |
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| virtual int | cmp_offset (ptrdiff_t row_offset) const |
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| virtual int | cmp_binary_offset (ptrdiff_t row_offset) const |
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| virtual int | key_cmp (const uchar *a, const uchar *b) const |
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| virtual int | key_cmp (const uchar *str, uint length) const |
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| virtual uint | decimals () const |
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| virtual bool | is_text_key_type () const |
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| bool | is_null (ptrdiff_t row_offset=0) const |
| | Check whether the full table's row is NULL or the Field has value NULL. More...
|
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| bool | is_real_null (ptrdiff_t row_offset=0) const |
| | Check whether the Field has value NULL (temporary or actual). More...
|
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| bool | is_null_in_record (const uchar *record) const |
| | Check if the Field has value NULL or the record specified by argument has value NULL for this Field. More...
|
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| void | set_null (ptrdiff_t row_offset=0) |
| | Set field to value NULL. More...
|
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| void | set_notnull (ptrdiff_t row_offset=0) |
| | Set field to value NOT NULL. More...
|
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| type_conversion_status | check_constraints (int mysql_errno) |
| | Check NOT NULL constraint on the field after temporary nullability is disabled. More...
|
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| void | set_check_for_truncated_fields (enum_check_fields check_for_truncated_fields) |
| | Remember the value of THD::check_for_truncated_fields to handle possible NOT-NULL constraint errors after BEFORE-trigger execution is finished. More...
|
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| bool | is_nullable () const |
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| uint | null_offset (const uchar *record) const |
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| uint | null_offset () const |
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| void | set_null_ptr (uchar *p_null_ptr, uint p_null_bit) |
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| virtual void | make_send_field (Send_field *send_field) const |
| | Populates a Send_field object with metadata about the column represented by this Field object. More...
|
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| virtual bool | optimize_range (uint idx, uint part) const |
| | Whether this field can be used for index range scans when in the given keypart of the given index. More...
|
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| virtual bool | can_be_compared_as_longlong () const |
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| virtual void | mem_free () |
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| virtual Field * | new_field (MEM_ROOT *root, TABLE *new_table) const |
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| Field * | new_field (MEM_ROOT *root, TABLE *new_table, uchar *new_ptr, uchar *new_null_ptr, uint new_null_bit) const |
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| virtual Field * | new_key_field (MEM_ROOT *root, TABLE *new_table, uchar *new_ptr, uchar *new_null_ptr, uint new_null_bit) const |
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| Field * | new_key_field (MEM_ROOT *root, TABLE *new_table, uchar *new_ptr) const |
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| void | move_field (uchar *ptr_arg, uchar *null_ptr_arg, uchar null_bit_arg) |
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| virtual void | move_field_offset (ptrdiff_t ptr_diff) |
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| virtual void | get_image (uchar *buff, size_t length, const CHARSET_INFO *) const |
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| virtual void | set_image (const uchar *buff, size_t length, const CHARSET_INFO *) |
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| virtual size_t | get_key_image (uchar *buff, size_t length, imagetype type) const |
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| virtual void | set_key_image (const uchar *buff, size_t length) |
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| longlong | val_int_offset (ptrdiff_t row_offset) |
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| longlong | val_int (uchar *new_ptr) |
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| String * | val_str (String *str, uchar *new_ptr) |
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| virtual bool | send_to_protocol (Protocol *protocol) const |
| | Send the value of this field over the protocol using the correct Protocol::store*() function which matches the type of the field. More...
|
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| virtual uchar * | pack (uchar *to, const uchar *from, size_t max_length) const |
| | Pack the field into a format suitable for storage and transfer. More...
|
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| uchar * | pack (uchar *to) const |
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| virtual const uchar * | unpack (uchar *to, const uchar *from, uint param_data) |
| | Unpack a field from row data. More...
|
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| const uchar * | unpack (const uchar *from) |
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| virtual uchar * | pack_with_metadata_bytes (uchar *to, const uchar *from, uint max_length) const |
| | This function does the same thing as pack(), except for the difference that max_length does not mean the number of bytes in the output, but the maximum field length from the input (which must be exactly field->max_field_length()). More...
|
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| virtual bool | pack_diff (uchar **to, ulonglong value_options) const |
| | Write the field for the binary log in diff format. More...
|
| |
| virtual uint | max_packed_col_length () const |
| | This is a wrapper around pack_length() used by filesort() to determine how many bytes we need for packing "addon fields". More...
|
| |
| uint | offset (uchar *record) const |
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| void | copy_data (ptrdiff_t src_record_offset) |
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| virtual bool | get_date (MYSQL_TIME *ltime, my_time_flags_t fuzzydate) const |
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| virtual bool | get_time (MYSQL_TIME *ltime) const |
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| const CHARSET_INFO * | charset_for_protocol () const |
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| virtual const CHARSET_INFO * | sort_charset () const |
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| virtual bool | has_charset () const |
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| virtual bool | match_collation_to_optimize_range () const |
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| virtual enum Derivation | derivation () const |
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| virtual uint | repertoire () const |
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| virtual void | set_derivation (enum Derivation) |
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| bool | set_warning (Sql_condition::enum_severity_level level, unsigned int code, int cut_increment) |
| | Produce warning or note about data saved into field. More...
|
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| bool | set_warning (Sql_condition::enum_severity_level level, uint code, int cut_increment, const char *view_db, const char *view_name) |
| | Produce warning or note about data saved into field. More...
|
| |
| bool | warn_if_overflow (int op_result) |
| | Process decimal library return codes and issue warnings for overflow and truncation. More...
|
| |
| virtual void | init (TABLE *table_arg) |
| |
| virtual uint | is_equal (const Create_field *new_field) const |
| | Whether a field being created is type-compatible with an existing one. More...
|
| |
| longlong | convert_decimal2longlong (const my_decimal *val, bool unsigned_flag, bool *has_overflow) |
| | Conversion from decimal to longlong. More...
|
| |
| virtual uint32 | char_length () const |
| |
| virtual geometry_type | get_geometry_type () const |
| |
| void | dbug_print () const |
| |
| ha_storage_media | field_storage_type () const |
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| void | set_storage_type (ha_storage_media storage_type_arg) |
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| column_format_type | column_format () const |
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| void | set_column_format (column_format_type column_format_arg) |
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| virtual type_conversion_status | validate_stored_val (THD *thd) |
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| virtual void | hash (ulong *nr, ulong *nr2) const |
| |
| virtual ulonglong | get_max_int_value () const |
| | Get the upper limit of the MySQL integral and floating-point type. More...
|
| |
| virtual const uchar * | data_ptr () const |
| | Return a const pointer to the actual data in the record buffer. More...
|
| |
| const uchar * | field_ptr () const |
| | Return a const pointer to where the field is stored in the record buffer. More...
|
| |
| uchar * | field_ptr () |
| | Return a pointer to where the field is stored in the record buffer. More...
|
| |
| void | set_field_ptr (uchar *ptr_arg) |
| |
| virtual bool | is_updatable () const |
| | Checks whether a string field is part of write_set. More...
|
| |
| bool | is_part_of_actual_key (THD *thd, uint cur_index, KEY *cur_index_info) const |
| | Check whether field is part of the index taking the index extensions flag into account. More...
|
| |
| Key_map | get_covering_prefix_keys () const |
| | Get covering prefix keys. More...
|
| |
| virtual bool | is_array () const |
| | Whether the field is a typed array. More...
|
| |
| virtual uint32 | get_length_bytes () const |
| | Return number of bytes the field's length takes. More...
|
| |
| bool | handle_old_value () const |
| | Whether field's old valued have to be handled. More...
|
| |
| virtual void | set_field_index (uint16 field_index) |
| | Sets field index. More...
|
| |
| uint16 | field_index () const |
| | Returns field index. More...
|
| |
|
| enum | enum_auto_flags {
NONE = 0
, NEXT_NUMBER = 1
, DEFAULT_NOW = 2
, ON_UPDATE_NOW = 4
,
GENERATED_FROM_EXPRESSION = 8
} |
| | Flags for Field::auto_flags / Create_field::auto_flags bitmaps. More...
|
| |
| enum | geometry_type {
GEOM_GEOMETRY = 0
, GEOM_POINT = 1
, GEOM_LINESTRING = 2
, GEOM_POLYGON = 3
,
GEOM_MULTIPOINT = 4
, GEOM_MULTILINESTRING = 5
, GEOM_MULTIPOLYGON = 6
, GEOM_GEOMETRYCOLLECTION = 7
} |
| |
| enum | imagetype { itRAW
, itMBR
} |
| |
| static bool | type_can_have_key_part (enum_field_types) |
| | Check whether a field type can be partially indexed by a key. More...
|
| |
| static enum_field_types | field_type_merge (enum_field_types, enum_field_types) |
| | Return type of which can carry value of both given types in UNION result. More...
|
| |
| static Item_result | result_merge_type (enum_field_types) |
| | Detect Item_result by given field type of UNION merge result. More...
|
| |
| TABLE * | table |
| | Pointer to TABLE object that owns this field. More...
|
| |
| const char * | orig_db_name {nullptr} |
| | Pointer to original database name, only non-NULL for a temporary table. More...
|
| |
| const char * | orig_table_name {nullptr} |
| | Pointer to original table name, only non-NULL for a temporary table. More...
|
| |
| const char ** | table_name |
| |
| const char * | field_name |
| |
| LEX_CSTRING | comment |
| |
| Key_map | key_start |
| |
| Key_map | part_of_key |
| | Keys that includes this field except of prefix keys. More...
|
| |
| Key_map | part_of_prefixkey |
| | Prefix keys. More...
|
| |
| Key_map | part_of_sortkey |
| |
| Key_map | part_of_key_not_extended |
| | All keys that include this field, but not extended by the storage engine to include primary key columns. More...
|
| |
| uint32 | field_length |
| |
| uchar | null_bit |
| |
| uchar | auto_flags |
| | Bitmap of flags indicating if field value is auto-generated by default and/or on update, and in which way. More...
|
| |
| bool | is_created_from_null_item |
| | If true, this field was created in create_tmp_field_from_item from a NULL value. More...
|
| |
| bool | m_indexed |
| | True if this field belongs to some index (unlike part_of_key, the index might have only a prefix). More...
|
| |
| LEX_CSTRING | m_engine_attribute = EMPTY_CSTR |
| |
| LEX_CSTRING | m_secondary_engine_attribute = EMPTY_CSTR |
| |
| Value_generator * | gcol_info {nullptr} |
| |
| bool | stored_in_db |
| | Indication that the field is physically stored in tables rather than just generated on SQL queries. More...
|
| |
| Value_generator * | m_default_val_expr {nullptr} |
| | Holds the expression to be used to generate default values. More...
|
| |
| static constexpr size_t | MAX_VARCHAR_WIDTH {65535} |
| |
| static constexpr size_t | MAX_TINY_BLOB_WIDTH {255} |
| |
| static constexpr size_t | MAX_SHORT_BLOB_WIDTH {65535} |
| |
| static constexpr size_t | MAX_MEDIUM_BLOB_WIDTH {16777215} |
| |
| static constexpr size_t | MAX_LONG_BLOB_WIDTH {4294967295} |
| |
| uchar * | pack_int16 (uchar *to, const uchar *from, size_t max_length) const |
| |
| const uchar * | unpack_int16 (uchar *to, const uchar *from) const |
| |
| uchar * | pack_int24 (uchar *to, const uchar *from, size_t max_length) const |
| |
| const uchar * | unpack_int24 (uchar *to, const uchar *from) const |
| |
| uchar * | pack_int32 (uchar *to, const uchar *from, size_t max_length) const |
| |
| const uchar * | unpack_int32 (uchar *to, const uchar *from) const |
| |
| uchar * | pack_int64 (uchar *to, const uchar *from, size_t max_length) const |
| |
| const uchar * | unpack_int64 (uchar *to, const uchar *from) const |
| |
| uchar * | ptr |
| | Holds the position to the field in record. More...
|
| |
| static uchar | dummy_null_buffer = ' ' |
| |
This class is a substitute for the Field classes during CREATE TABLE.
When adding a functional index at table creation, we need to resolve the expression we are indexing. All functions that references one or more columns expect a Field to be available. But during CREATE TABLE, we only have access to Create_field. So this class acts as a substitute for the Field classes so that expressions can be properly resolved. Thus, trying to call store or val_* on this class will cause an assertion.
Public Member Functions inherited from Field
1.9.2