“Specified cast is not valid” when populating DataTable from OracleDataAdapter.Fill()

Question

I can\'t seem to find this question anywhere on Google (or StackOverflow), which really surprised me, so I\'m putting it on here to help others in the same situation.

I

Answer 1

I know this has been answered already, but I also found another alternative that I use as well. I used a CAST on the field that was giving me troubles.

Based on OP's SELECT command:

SELECT acct_no, CAST((market_value/mv_total) AS DECIMAL(14,4))  -- CAST to decimal here
FROM myTable
WHERE NVL(market_value, 0) != 0
AND NVL(mv_total, 0) != 0