MySQL Escape Character Issue

问题

While I was trying to solve This Question. I created the dummy records in a table

create table mytable(data CHAR(30));

INSERT INTO mytable VALUES('d\\one'),('d\\two'),('d\\three');

SELECT * FROM mytable;
+---------+
| data    |
+---------+
| d\one   |
| d\two   |
| d\three |
+---------+
3 rows in set (0.00 sec)

Now when i am selecting records, I am getting no result, I have tried many combination with like but no luck.

Ex :

SELECT * FROM mytable WHERE data LIKE "d\\%";
Empty set (0.00 sec)


SELECT * FROM mytable WHERE data LIKE 'd\\%';
Empty set (0.00 sec)

回答1:

Use triple slash:

SELECT * FROM mytable WHERE data LIKE "d\\\%"

回答2:

Or use INSTR() instead

SELECT * FROM mytable WHERE instr(data, 'd\\') = 1

来源：https://stackoverflow.com/questions/21903887/mysql-escape-character-issue