diff options
Diffstat (limited to 'sql/table.h')
| -rw-r--r-- | sql/table.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/sql/table.h b/sql/table.h new file mode 100644 index 00000000000..7fe3e5de601 --- /dev/null +++ b/sql/table.h @@ -0,0 +1,136 @@ +/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + + +/* Structs that defines the TABLE */ + +class Item; /* Needed by ORDER */ +class GRANT_TABLE; + +/* Order clause list element */ + +typedef struct st_order { + struct st_order *next; + Item **item; /* Point at item in select fields */ + bool asc; /* true if ascending */ + bool free_me; /* true if item isn't shared */ + bool in_field_list; /* true if in select field list */ + Field *field; /* If tmp-table group */ + char *buff; /* If tmp-table group */ + table_map used,depend_map; +} ORDER; + +typedef struct st_grant_info +{ + GRANT_TABLE *grant_table; + uint version; + uint privilege; + uint want_privilege; +} GRANT_INFO; + +/* Table cache entry struct */ + +class Field_timestamp; +class Field_blob; + +struct st_table { + handler *file; + Field **field; /* Pointer to fields */ + Field_blob **blob_field; /* Pointer to blob fields */ + HASH name_hash; /* hash of field names */ + byte *record[3]; /* Pointer to records */ + uint fields; /* field count */ + uint reclength; /* Recordlength */ + uint rec_buff_length; + uint keys,key_parts,primary_key,max_key_length,max_unique_length; + uint uniques; + uint null_fields; /* number of null fields */ + uint blob_fields; /* number of blob fields */ + key_map keys_in_use, keys_in_use_for_query; + KEY *key_info; /* data of keys in database */ + TYPELIB keynames; /* Pointers to keynames */ + ha_rows max_rows; /* create information */ + ha_rows min_rows; /* create information */ + ulong avg_row_length; /* create information */ + ulong raid_chunksize; + TYPELIB fieldnames; /* Pointer to fieldnames */ + TYPELIB *intervals; /* pointer to interval info */ + enum db_type db_type; /* table_type for handler */ + enum row_type row_type; /* How rows are stored */ + uint db_create_options; /* Create options from database */ + uint db_options_in_use; /* Options in use */ + uint db_record_offset; /* if HA_REC_IN_SEQ */ + uint db_stat; /* mode of file as in handler.h */ + uint raid_type,raid_chunks; + uint status; /* Used by postfix.. */ + uint system; /* Set if system record */ + ulong time_stamp; /* Set to offset+1 of record */ + uint timestamp_field_offset; + uint next_number_index; + uint blob_ptr_size; /* 4 or 8 */ + uint next_number_key_offset; + int current_lock; /* Type of lock on table */ + my_bool copy_blobs; /* copy_blobs when storing */ + my_bool null_row; /* All columns are null */ + my_bool maybe_null,outer_join; /* Used with OUTER JOIN */ + my_bool distinct,tmp_table,const_table; + my_bool key_read; + my_bool crypted; + my_bool db_low_byte_first; /* Portable row format */ + my_bool locked_by_flush; + Field *next_number_field, /* Set if next_number is activated */ + *found_next_number_field, /* Set on open */ + *rowid_field; + Field_timestamp *timestamp_field; + my_string comment; /* Comment about table */ + REGINFO reginfo; /* field connections */ + MEM_ROOT mem_root; + GRANT_INFO grant; + + char *table_cache_key; + char *table_name,*real_name,*path; + uint key_length; /* Length of key */ + uint tablenr,used_fields,null_bytes; + table_map map; + ulong version,flush_version; + uchar *null_flags; + IO_CACHE *io_cache; /* If sorted trough file*/ + byte *record_pointers; /* If sorted in memory */ + ha_rows found_records; /* How many records in sort */ + ORDER *group; + key_map quick_keys,used_keys; + ha_rows quick_rows[MAX_KEY]; + uint quick_key_parts[MAX_KEY]; + key_part_map const_key_parts[MAX_KEY]; + ulong query_id; + + THD *in_use; /* Which thread uses this */ + struct st_table *next,*prev; +}; + + +typedef struct st_table_list { + struct st_table_list *next; + char *db,*name,*real_name; + thr_lock_type lock_type; + bool straight; /* optimize with prev table */ + bool outer_join; + TABLE *table; + Item *on_expr; /* Used with outer join */ + struct st_table_list *natural_join; /* natural join on this table*/ + List<String> *use_index,*ignore_index; + GRANT_INFO grant; +} TABLE_LIST; |