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SAP Sybase SQL Anywhere 16.0 » SQL Anywhere Server - SQL Usage » Queries and data modification » Summarizing, grouping, and sorting query results » The GROUP BY clause: Organizing query results into groups


WHERE clause and GROUP BY

You can use a WHERE clause in a statement with GROUP BY. The WHERE clause is evaluated before the GROUP BY clause. Rows that do not satisfy the conditions in the WHERE clause are eliminated before any grouping is done. Here is an example:

SELECT  Name, AVG( UnitPrice )
   FROM Products
   WHERE ID > 400
   GROUP BY Name;

Only the rows with ID values of more than 400 are included in the groups that are used to produce the query results.