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MDEV-6107 merge default_tmp_storage_engine

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Adapt default_tmp_storage_engine implementation from mysql-5.6
New feature (as compared to 5.6), default_tmp_storage_engine=NULL
means that temporary tables will use default_storage_engine value.
This makes the behavior backward compatible.
This commit is contained in:
Sergei Golubchik
2014-06-14 22:15:52 +02:00
parent 2edcf8f9ff
commit cf1a09e42f
17 changed files with 516 additions and 68 deletions
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10
sql/handler.h
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@ -1360,6 +1360,8 @@ static inline sys_var *find_hton_sysvar(handlerton *hton, st_mysql_sys_var *var)
return find_plugin_sysvar(hton2plugin[hton->slot], var);
}
handlerton *ha_default_handlerton(THD *thd);
handlerton *ha_default_tmp_handlerton(THD *thd);
/* Possible flags of a handlerton (there can be 32 of them) */
#define HTON_NO_FLAGS 0
@ -1632,6 +1634,11 @@ struct HA_CREATE_INFO
bool table_was_deleted;
bool tmp_table() { return options & HA_LEX_CREATE_TMP_TABLE; }
void use_default_db_type(THD *thd)
{
db_type= tmp_table() ? ha_default_tmp_handlerton(thd)
: ha_default_handlerton(thd);
}
};
@ -3961,8 +3968,7 @@ extern const char *myisam_stats_method_names[];
extern ulong total_ha, total_ha_2pc;
/* lookups */
handlerton *ha_default_handlerton(THD *thd);
plugin_ref ha_resolve_by_name(THD *thd, const LEX_STRING *name);
plugin_ref ha_resolve_by_name(THD *thd, const LEX_STRING *name, bool tmp_table);
plugin_ref ha_lock_engine(THD *thd, const handlerton *hton);
handlerton *ha_resolve_by_legacy_type(THD *thd, enum legacy_db_type db_type);
handler *get_new_handler(TABLE_SHARE *share, MEM_ROOT *alloc,