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Fetching data in embedded SQL is done using the SELECT statement. There are two cases:
The SELECT statement returns at most one row Use an INTO clause to assign the returned values directly to host variables. See SELECT statements that return at most one row.
The SELECT statement may return multiple rows Use cursors to manage the rows of the result set. See Using cursors in embedded SQL.
SELECT statements that return at most one row
Using cursors in embedded SQL
Fetching more than one row at a time