SQL结合在哪里和选择

Question

I have a string of data, House Electricity - 1234 , which i have stored in an SQL database.

I am attempting to restrict the string down to the four digit number code at the end, but when the data is put into the database it needs to have the descriptive terms first.

The environment I am working in lets me run SQL queries , however there is a catch.

It must begin with SELECT Nominal_Code FROM Housing WHERE

I can't change the order of these.

I have tried putting in a RIGHT ('House Electricity - 1234', 4) in afterwards, but it doesn't seem to do anything.

Is there any solution to this?

Edit for clarity.

The Column is called Nominal_Code

The Table is called Housing

The solution must start with SELECT Nominal_Code FROM Housing WHERE - as the software I am using (Docuware) requires it in that exact format to begin with.

The goal is to get House Electricity - 1234 to replace itself with 1234.

Answer 1

Too long for a comment...

Seems fine to me:

SELECT 'a123', RIGHT('a123',3);
+------+-----------------+
| a123 | RIGHT('a123',3) |
+------+-----------------+
| a123 | 123             |
+------+-----------------+