对SQL ORDER BY查询进行排序，转义字符前不加斜杠

Question

I am trying to figure out how to sort an SQL query by Last Name. This is working except in the case of where a customers last name has a special character.

For example O'Maley.

If this last name is sorted with a last name of "Omar" for example the order should be:

O'Maley Omar

BUT since I use addslashes() in PHP before adding it into the database the sort is actually happening on O\\'Maley and so the sort ends up being.

Omar O'Maley

Of course the \\ is removed with stripslashes() before being displayed to the user.

How can I make this properly sort?

Answer 1

Look into using either the REPLACE() or TRANSLATE() sql functions. For example:

ORDER BY REPLACE(REPLACE(last_name, '\\', ''), ''', '')

The above REPLACE() functions will remove the backslashes and single quotes before doing the order by.

ORDER BY TRANSLATE(last_name, '\\'', '')

The above TRANSLATE() function will also remove the backslashes and single quotes. This might be a better format for specifying many more characters to remove from a string.

Note: You don't mention a database, so I'm assuming Oracle. Most databases have equivalent functions.