diff options
Diffstat (limited to 'sql/sql_table.h')
| -rw-r--r-- | sql/sql_table.h | 92 |
1 files changed, 72 insertions, 20 deletions
diff --git a/sql/sql_table.h b/sql/sql_table.h index 9d5e768a5a3..5e836602b0d 100644 --- a/sql/sql_table.h +++ b/sql/sql_table.h @@ -20,6 +20,7 @@ #include "my_sys.h" // pthread_mutex_t class Alter_info; +class Alter_table_ctx; class Create_field; struct TABLE_LIST; class THD; @@ -31,7 +32,6 @@ typedef struct st_key KEY; typedef struct st_key_cache KEY_CACHE; typedef struct st_lock_param_type ALTER_PARTITION_PARAM_TYPE; typedef struct st_order ORDER; -class Alter_table_change_level; enum ddl_log_entry_code { @@ -63,10 +63,19 @@ enum ddl_log_action_code DDL_LOG_REPLACE_ACTION: Rename an entity after removing the previous entry with the new name, that is replace this entry. + DDL_LOG_EXCHANGE_ACTION: + Exchange two entities by renaming them a -> tmp, b -> a, tmp -> b. */ DDL_LOG_DELETE_ACTION = 'd', DDL_LOG_RENAME_ACTION = 'r', - DDL_LOG_REPLACE_ACTION = 's' + DDL_LOG_REPLACE_ACTION = 's', + DDL_LOG_EXCHANGE_ACTION = 'e' +}; + +enum enum_ddl_log_exchange_phase { + EXCH_PHASE_NAME_TO_TEMP= 0, + EXCH_PHASE_FROM_TO_NAME= 1, + EXCH_PHASE_TEMP_TO_FROM= 2 }; @@ -75,6 +84,7 @@ typedef struct st_ddl_log_entry const char *name; const char *from_name; const char *handler_name; + const char *tmp_name; uint next_entry; uint entry_pos; enum ddl_log_entry_code entry_type; @@ -113,11 +123,15 @@ enum enum_explain_filename_mode #define WFRM_KEEP_SHARE 8 /* Flags for conversion functions. */ -#define FN_FROM_IS_TMP (1 << 0) -#define FN_TO_IS_TMP (1 << 1) -#define FN_IS_TMP (FN_FROM_IS_TMP | FN_TO_IS_TMP) -#define NO_FRM_RENAME (1 << 2) -#define FRM_ONLY (1 << 3) +static const uint FN_FROM_IS_TMP= 1 << 0; +static const uint FN_TO_IS_TMP= 1 << 1; +static const uint FN_IS_TMP= FN_FROM_IS_TMP | FN_TO_IS_TMP; +static const uint NO_FRM_RENAME= 1 << 2; +static const uint FRM_ONLY= 1 << 3; +/** Don't remove table in engine. Remove only .FRM and maybe .PAR files. */ +static const uint NO_HA_TABLE= 1 << 4; +/** Don't resolve MySQL's fake "foo.sym" symbolic directory names. */ +static const uint SKIP_SYMDIR_ACCESS= 1 << 5; uint filename_to_tablename(const char *from, char *to, uint to_length #ifndef DBUG_OFF @@ -131,38 +145,73 @@ uint build_table_filename(char *buff, size_t bufflen, const char *db, const char *table, const char *ext, uint flags); uint build_table_shadow_filename(char *buff, size_t bufflen, ALTER_PARTITION_PARAM_TYPE *lpt); +uint build_tmptable_filename(THD* thd, char *buff, size_t bufflen); bool check_table_file_presence(char *old_path, char *path, const char *db, const char *table_name, const char *alias, bool issue_error); bool mysql_create_table(THD *thd, TABLE_LIST *create_table, HA_CREATE_INFO *create_info, Alter_info *alter_info); +/* + mysql_create_table_no_lock can be called in one of the following + mutually exclusive situations: + + - Just a normal ordinary CREATE TABLE statement that explicitly + defines the table structure. + + - CREATE TABLE ... SELECT. It is special, because only in this case, + the list of fields is allowed to have duplicates, as long as one of the + duplicates comes from the select list, and the other doesn't. For + example in + + CREATE TABLE t1 (a int(5) NOT NUL) SELECT b+10 as a FROM t2; + + the list in alter_info->create_list will have two fields `a`. + + - ALTER TABLE, that creates a temporary table #sql-xxx, which will be later + renamed to replace the original table. + + - ALTER TABLE as above, but which only modifies the frm file, it only + creates an frm file for the #sql-xxx, the table in the engine is not + created. + + - Assisted discovery, CREATE TABLE statement without the table structure. + + These situations are distinguished by the following "create table mode" + values, where a CREATE ... SELECT is denoted by any non-negative number + (which should be the number of fields in the SELECT ... part), and other + cases use constants as defined below. +*/ +#define C_CREATE_SELECT(X) ((X) > 0 ? (X) : 0) +#define C_ORDINARY_CREATE 0 +#define C_ALTER_TABLE -1 +#define C_ALTER_TABLE_FRM_ONLY -2 +#define C_ASSISTED_DISCOVERY -3 + bool mysql_create_table_no_lock(THD *thd, const char *db, const char *table_name, HA_CREATE_INFO *create_info, - Alter_info *alter_info, - bool tmp_table, uint select_field_count, - bool *is_trans); + Alter_info *alter_info, bool *is_trans, + int create_table_mode); + +int mysql_discard_or_import_tablespace(THD *thd, + TABLE_LIST *table_list, + bool discard); bool mysql_prepare_alter_table(THD *thd, TABLE *table, HA_CREATE_INFO *create_info, - Alter_info *alter_info); + Alter_info *alter_info, + Alter_table_ctx *alter_ctx); bool mysql_trans_prepare_alter_copy_data(THD *thd); bool mysql_trans_commit_alter_copy_data(THD *thd); bool mysql_alter_table(THD *thd, char *new_db, char *new_name, HA_CREATE_INFO *create_info, TABLE_LIST *table_list, Alter_info *alter_info, - uint order_num, ORDER *order, bool ignore, - bool require_online); + uint order_num, ORDER *order, bool ignore); bool mysql_compare_tables(TABLE *table, Alter_info *alter_info, HA_CREATE_INFO *create_info, - uint order_num, - Alter_table_change_level *need_copy_table, - KEY **key_info_buffer, - uint **index_drop_buffer, uint *index_drop_count, - uint **index_add_buffer, uint *index_add_count, - uint *candidate_key_count); + bool *metadata_equal); bool mysql_recreate_table(THD *thd, TABLE_LIST *table_list); bool mysql_create_like_table(THD *thd, TABLE_LIST *table, TABLE_LIST *src_table, @@ -181,7 +230,7 @@ bool mysql_rm_table(THD *thd,TABLE_LIST *tables, my_bool if_exists, int mysql_rm_table_no_locks(THD *thd, TABLE_LIST *tables, bool if_exists, bool drop_temporary, bool drop_view, bool log_query); -bool quick_rm_table(handlerton *base,const char *db, +bool quick_rm_table(THD *thd, handlerton *base, const char *db, const char *table_name, uint flags); void close_cached_table(THD *thd, TABLE *table); void sp_prepare_create_field(THD *thd, Create_field *sql_field); @@ -205,6 +254,9 @@ bool sync_ddl_log(); void release_ddl_log(); void execute_ddl_log_recovery(); bool execute_ddl_log_entry(THD *thd, uint first_entry); +bool validate_comment_length(THD *thd, const char *comment_str, + size_t *comment_len, uint max_len, + uint err_code, const char *comment_name); bool check_duplicate_warning(THD *thd, char *msg, ulong length); template<typename T> class List; |