PROC SQL is a procedural extension to the SQL language primarily used within the SAS (Statistical Analysis System) environment. It allows users to execute SQL queries against SAS datasets and external databases, enabling data manipulation, analysis, and reporting. It is commonly used for tasks such as data extraction, transformation, and loading (ETL), creating summary tables, joining data from multiple sources, and generating reports based on SQL queries. It differs from standard SQL in that it's embedded within SAS and leverages SAS-specific functions and features, although it supports a large subset of ANSI SQL.
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