MySQL SUM longtext field with $1.000.00 as 1000

Question

I have a column meta_entry of type longtext with two entries in it $1.000.00 and $54.00
When I run SUM(SUBSTRING(meta_value, 2)) I get 55 because it doesn't read the first entry as 1000 rather it reads it as 1 because of the . after the 1
How can i write a query that will ignore the periods, while still keeping the period at the end of the number (before the cents)?

Answer 1

Given:

mysql> select * from stuff;
+------------+
| meta_entry |
+------------+
| $1.000.00  |
| $54.00     |
+------------+
2 rows in set (0.00 sec)

The following query yields:

mysql> select sum(replace(substring(meta_entry, 2), '.', '')) / 100 from stuff;
+-------------------------------------------------------+
| sum(replace(substring(meta_entry, 2), '.', '')) / 100 |
+-------------------------------------------------------+
|                                                  1054 |
+-------------------------------------------------------+
1 row in set (0.00 sec)

Of course you'll need a bit more if you have to have those cents on the end, in which case this big ole long ugly thing would do what you need:

mysql> select format(cast(sum(replace(substring(meta_entry, 2), '.', '')) as decimal) / 100, 2) as sum from stuff;
+----------+
| sum      |
+----------+
| 1,054.00 |
+----------+
1 row in set (0.00 sec)