In PROC SQL terminology, a row in a table is the same as an observation in a SAS data set. A column is the same as a variable. Note: In this chapter, the term table refers to PROC SQL tables, ...

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The DICTIONARY tables component is specified in the FROM clause of a SELECT statement. DICTIONARY is a reserved libref for use only in PROC SQL. Data from DICTIONARY tables are generated at run time.

Learn the benefits and drawbacks of using proc sql for complex joins and aggregations in SAS. Compare proc sql with data steps and SQL pass-through.