Sometimes you need quick answers to questions about your data. You might want to query
(retrieve data from) a single SAS data set or a combination of data sets to
• examine relationships between data values
• view a subset of your data
• compute values quickly.
The SQL procedure (PROC SQL) provides an easy, flexible way to query and combine your data.
This lesson shows you how to create a basic query using one or more tables (data sets). You'll
also learn how to create a new table from your query.
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发表于 2010-12-5 16:08:00
发表于 2011-5-11 14:55:39