IT Nursery
Can the mutate be used when the mutation is conditional (depending on the values of certain column values)? This example helps showing what I mean. structure(list(a = c(1, 3,...
The OR operator in the WHEN clause of a CASE statement is not supported. How can I do this? CASE ebv.db_no WHEN 22978 OR 23218 OR 23219 THEN 'WECS...