laverne_guo

摘要： SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL SERIALIZABLE; set default_transaction_isolation='repeatable read'; set transaction isolatio 阅读全文

摘要： 测试 每次执行时，都会增merge出 create table tabx as select * from dba_objects; create sequence pub_seq ; merge into tabx t1 using tabx t2 on (t1.object_id=t2.obje 阅读全文