Something like the following: (I am at home at present so do not have access to my work development computer)
Basic query:
SELECT column_name(s)
FROM table_name
WHERE column_name IN (value1,value2,...)
One way: (using the upper function)
SELECT column_name(s)
FROM table_name
WHERE upper(column_name) IN (value1,value2,...)
Another way:
SELECT column_name(s)
FROM table_name
WHERE upper(column_name) IN (upper(value1), upper(value2),...)
I am off to watch the Olympic opening ceremony!