I have a query that ran fine in our old MySQL database where there is a check:

```
WHERE column_x + column_y > 524288000

```

Now that we've migrated to Redshift, the query fails:

```
ERROR: Numeric data overflow (addition)
  Detail: 
  -----------------------------------------------
  error:  Numeric data overflow (addition)
  code:      1058
  context:   
  query:     915381
  location:  numeric.hpp:112
  process:   query4_s0_22 [pid=6421]
  ----------------------------------------------- [SQL State=XX000] 

```

Both columns are of type `bigint`. When running the query without adding the columns (just checking against one column or the other) the query executes fine. I'm assuming there are rows where `column_x + column_y` is greater than the max size of `bigint`.

What's the workaround here?