I've tried count(iif(expr)) and multiple variations, but can't seem get this to work.
Table one has 500 lines with a date in each line. Lets say line one = 5/19/15
Table two has a list of dates (holidays, vacation, etc.). This table has 10 dates, say:
1/1/15
2/8/15
5/19/15
...
I'm trying to...