Hi, How can I know if a string field in a table has a hash table or not? I am asking this because I noticed that string fields with millions of unique values run very slowly, and from your documentation I understood that if I add too many unique strings to a column, then internally Monet will stop using a hash-table, and performance will be affected. Thanks. -- View this message in context: http://www.nabble.com/String-performance-tp24256780p24256780.html Sent from the monetdb-users mailing list archive at Nabble.com.