Dear CommunityI was asked to deliver the number of unique customer IDs
year to date split by month, and I cannot myself figure out whether it
is possible to calculate this number. Example:In January 2019 I had the
following customer IDs visiting my website: AB12AC13AD14This give me 3
unique customers that month.In February 2019 I had the following
customer IDs visiting my website: AB12BA21This give me 2 unique
customers that month.In March 2019 I had the following customer IDs
visiting my websit...