LOCKTYPE_SELECT: value is 1; use the normal SELECT statement to do the query.
LOCKTYPE_SELECT：值为1，使用通常的select语句执行查询。
Online backups can run during normal SELECT, INSERT, DELETE, and UPDATE activity against the database.
在对数据库进行常规的SELECT、INSERT、DELETE和UPDATE活动的同时可以执行在线备份。
Online backups can run during normal SELECT, INSERT, DELETE, and UPDATE activity against the database.
在对数据库进行常规的SELECT、INSERT、DELETE和UPDATE活动的同时可以执行在线备份。
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