sql - 如何区分并仅显示 2 个长字符串的确切差异

Question

我有 2 个文件 - a 和 b。

一个

1,"abc","( @docid =""00123"" or @docid =""00456"") AND a_number is not NULL"

b

1,"abc","( @docid =""00123"" or @docid =""00456"") AND @a_number is not NULL"

如何区分这两个文件并仅显示 a_number 中的部分更改而不是整个字符串？

Answer 1

我喜欢用

$ wdiff a b

# 1,"abc","( @docid =""00123"" or @docid =""00456"") AND [-a_number-] {+@a_number+} is not NULL"