For one-off issues, there are several free CSV to SQL tools on the net which build the insert/update/delete/merge/select script from the CSV data (i.e. bfotool.com/csv-to-sql).  That generated script can then...

It looks like you are not taking the LOTOSMIS_RET_DAILY.gm_var=1 condition into account.

You would need to code it something like this:

Sum(T.SING_IND * P.GRS_AMN *

CASE

WHEN P.gm_cd in (1105, 2123, 2124, 2150, 2152,...

I too liked seeing the prior day's question's answer in the newsletter. I don't always have access to the web to look it up and often do not have...