Example: air traffic controller
Subsetting
Found 1 free book(s)
257-30: An Introduction to SQL in SAS®
support.sas.compowerful data manipulation and query tool. Topics covered will include selecting, subsetting, sorting and grouping data--all without use of DATA step code or any procedures other than PROC SQL. THE STRUCTURE OF A SQL QUERY SQL is a language build on a very small number of keywords: • SELECT columns (variables) that you want