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A derived table is a nested SELECT in the FROM clause, i.e. it can be used as a table expression. As such, it works differently from a scalar subquery, which is a column expression.
SELECT nested.* FROM ( SELECT AUTHOR_ID, count(*) books FROM BOOK GROUP BY AUTHOR_ID ) nested ORDER BY nested.books DESC
Table<?> nested = create.select(BOOK.AUTHOR_ID, count().as("books")) .from(BOOK) .groupBy(BOOK.AUTHOR_ID).asTable("nested"); create.select(nested.fields()) .from(nested) .orderBy(nested.field("books")) .fetch();
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