TABLES_EXTENSIONS 表提供关于为主存储引擎和辅助存储引擎定义的表属性的信息。The TABLES_EXTENSIONS table provides
information about table attributes defined for primary and
secondary storage engines.
TABLES_EXTENSIONS 表保留以供将来使用。The TABLES_EXTENSIONS table is
reserved for future use.
TABLES_EXTENSIONS 表具有以下列:The TABLES_EXTENSIONS table has these
columns:
TABLE_CATALOG表所属的目录名称。该值始终为
def。The name of the catalog to which the table belongs. This value is alwaysdef.TABLE_SCHEMA表所属的模式(数据库)名称。The name of the schema (database) to which the table belongs.
TABLE_NAMETABLE_NAME表的名称。The name of the table.
ENGINE_ATTRIBUTEENGINE_ATTRIBUTE为主存储引擎定义的表属性。保留以供将来使用。Table attributes defined for the primary storage engine. Reserved for future use.
SECONDARY_ENGINE_ATTRIBUTESECONDARY_ENGINE_ATTRIBUTE为辅助存储引擎定义的表属性。保留以供将来使用。Table attributes defined for the secondary storage engine. Reserved for future use.