MySQL :: MySQL 8.4 参考手册 :: 15.1.28 DROP LOGFILE GROUP 语句

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MySQL 8.4 参考手册 / 15 条 SQL 语句 / 15.1 数据定义语句 / 15.1.28 DROP LOGFILE GROUP 语句

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15.1.28 DROP LOGFILE GROUP 语句15.1.28 DROP LOGFILE GROUP Statement

DROP LOGFILE GROUP logfile_group
    ENGINE [=] engine_name

的日志文件组logfile_group. The log file group must already exist or an error results. (For information on creating log file groups, see 第 15.1.16 节，“CREATE LOGFILE GROUP 语句”.)This statement drops the log file group named logfile_group. The log file group must already exist or an error results. (For information on creating log file groups, see Section 15.1.16, “CREATE LOGFILE GROUP Statement”.)

Important

在丢弃日志文件组之前，必须删除所有使用该日志文件组的表空间，用于UNDO 日志。Before dropping a log file group, you must drop all tablespaces that use that log file group for UNDO logging.

所需的 ENGINE 子句提供了日志文件组将被丢弃的存储引擎名称。engine_name 唯一允许的值是 NDB 和 NDBCLUSTERThe required ENGINE clause provides the name of the storage engine used by the log file group to be dropped. The only permitted values for engine_name are NDB and NDBCLUSTER.

DROP LOGFILE GROUP 仅适用于 NDB 集群的磁盘数据存储。参见第 25.6.11 节，“NDB 集群磁盘表”。DROP LOGFILE GROUP is useful only with Disk Data storage for NDB Cluster. See Section 25.6.11, “NDB Cluster Disk Data Tables”.

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