PROC SQL follows most of the guidelines set by the American National Standards Institute (ANSI) in its implementation of SQL. However, it is not fully compliant with the current ANSI Standard for SQL.

Note: The SQL procedure displays the variable labels as stored in the view. However, because you are referencing a view descriptor, you must use the SAS variable names in the WHERE clause, not the ...

https://github.com/rogerjdeangelis/utl-key-differences-between-sas-proc-sql-and-sqllite-in-r-sqldf-and-python-pdsql-packages https://communities.sas.com/t5/SAS ...

The SQL procedure is the Base SAS implementation of Structured Query Language. PROC SQL is part of Base SAS software, and you can use it with any SAS data set (table). Often, PROC SQL can be an ...