Details, details: Updates to The Little SAS Book

Earlier this year we quietly updated The Little SAS Book, Sixth Edition.  While these changes didn’t get a lot of attention, they are, in our opinion, critical to keeping The Little SAS Book useful and accurate. This is especially important for beginners who can’t be expected to know the history of SAS software or how […]

Unexpected results from missing values with PROC SQL

SAS SQL handles missing values differently than the ANSI standard for SQL. PROC SQL follows the SAS convention for handling missing values: numerical missing values are always interpreted as less or smaller than all nonmissing values. My first blog showed that missing values can be troublemakers in non-grouped descriptive statistics. […]

Unexpected results from missing values with PROC SQL was published on SAS Users.