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Home >Online Product Documentation >Table of Contents >Obtaining a Union Obtaining a Union
Specify the
The result set can contain zero or more of each element that the The next query finds all books and all authors in the current context: The next query returns the first names, last names, and degrees of authors of books or magazines in the current context: A union can appear only as the first step in a location path expression. Consequently, the following is incorrect because there is a union specification that is not in the first step of a location path expression. The following query finds all books for which the author's first name is Bob and all magazines with prices less than 10 dollars: |
XML PRODUCTIVITY THROUGH INNOVATION ™
