Update a column in table using SQL*Loader - sql

Question

I have written an SQL script having the below query. The query works fine.
update partner set is_seller_buyer=1 where id in (select id from partner
where names in
(
'A','B','C','D','E',... -- Around 100 names.
));
But now instead of writing around 100 names in a query itself, I want to fetch all the names from the CSV file. I read about SQL*Loader on the Internet, but I did not get much on an update query.
My CSV file only contain names.
I have tried
load data
infile 'c:\data\mydata.csv'
into table partner set is_wholesaler_reseller=1
where id in (select id from partner
where names in
(
'A','B','C','D','E',... -- Around 100 names.
));
fields terminated by "," optionally enclosed by '"'
( names, sal, deptno )
How can I achieve this?

Answer 1

SQL*Loader does not perform updates, only inserts. So, you should insert your names into a separate table, say names, and run your update from that:
update partner set is_seller_buyer=1 where id in (select id from partner
where names in
(
select names from names
));
Your loader script can be changed to:
load data
infile 'c:\data\mydata.csv'
into table names
fields terminated by "," optionally enclosed by '"'
( names, sal, deptno )
An alternate to this is to use External Tables which allows Oracle to treat a flat file like it is a table. An example to get you started can be found here.