difference between two strings mysql [closed]

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Closed 5 years ago.

I want to find the difference between two strings in MySQL. Say, if two strings like nishant and nisha are input, then 'nt' should be output.

回答1:

set @string2 :="nishant";
Query OK, 0 rows affected (0.00 sec)

set @string1 := "nisha";
Query OK, 0 rows affected (0.00 sec)

select @string1, @string2;
+----------+----------+
| @string1 | @string2 |
+----------+----------+
| nisha    | nishant  |
+----------+----------+
1 row in set (0.00 sec)

select if(length(@string1)>length(@string2), replace(@string1, @string2,""), replace(@string2, @string1, "")) as "The Difference";
+----------------+
| The Difference |
+----------------+
| nt             |
+----------------+
1 row in set (0.00 sec)

来源：https://stackoverflow.com/questions/21931763/difference-between-two-strings-mysql