Why use a READ UNCOMMITTED isolation level?
stackoverflow.com
Why use a READ UNCOMMITTED isolation level?
数据库基本支持五种标准 SQL 事务级别：未提交读取、已提交读取、可重复读取、快照隔离和可序列化
#database #transaction
By putting the database changes inside of a transaction, we can ensure that we either get all of the records or none of the records. We call that an atomic transaction: it happens completely or not at all.