甲骨文差异:如何比较两个表? [英] oracle diff: how to compare two tables?

问题描述

假设我有两个表t1和t2，它们的布局相同，但是可能包含不同的数据.

Suppose I have two tables, t1 and t2 which are identical in layout but which may contain different data.

区分这两个表的最佳方法是什么?

What's the best way to diff these two tables?

推荐答案

尝试一下:

(select * from T1 minus select * from T2) -- all rows that are in T1 but not in T2
union all
(select * from T2 minus select * from T1)  -- all rows that are in T2 but not in T1
;

没有外部工具. union all没有性能问题.

No external tool. No performance issues with union all.

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