For example this is myTable
:
| i | data |
+---+---------+
| 1 | d\one |
| 2 | d\two |
| 3 | d\three |
But I want to change it to:
| i | data |
+---+-------+
| 1 | one |
| 2 | two |
| 3 | three |
I know how to find a specific part of a string with a backslash in a field:
SELECT * FROM myTable WHERE data LIKE 'd%\%'
I know how to find & replace a field a value, only this query won't work:
UPDATE myTable SET data=REPLACE(data,'d\','') WHERE data LIKE 'd%\%'
You need to escape the backslash
UPDATE myTable
SET data = REPLACE(data,'d\\','')
WHERE data INSTR('d\\') = 1
试试这个......
UPDATE myTable SET `data`=REPLACE(`data`,'d\','');
I hope you should put triple slash \\\\\\
instead of double slash \\\\
in Like Clause
. As I have tried I am unable to pick data from using \\\\
SELECT * FROM mytable WHERE data LIKE 'd\\%';
Empty set (0.00 sec)
mysql> SELECT * FROM mytable WHERE data LIKE 'd\\\%';
+---------+
| data |
+---------+
| d\one |
| d\two |
| d\three |
+---------+
3 rows in set (0.00 sec)
mysql> SELECT REPLACE(data,'d\\','') FROM mytable WHERE data LIKE 'd\\\%';
+------------------------+
| REPLACE(data,'d\\','') |
+------------------------+
| one |
| two |
| three |
+------------------------+
3 rows in set (0.00 sec)
mysql> UPDATE mytable SET data = REPLACE(data,'d\\','') WHERE data LIKE 'd\\\%';
Query OK, 3 rows affected (0.06 sec)
Rows matched: 3 Changed: 3 Warnings: 0
mysql> SELECT * FROM mytable;
+-------+
| data |
+-------+
| one |
| two |
| three |
+-------+
3 rows in set (0.00 sec)
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