Can we PLEASE have some examples with Intersect that use more than one column in the Select statement? Many, many of the examples throughout the SQL help documentation use only the most trivial examples. Some programmers naturally think "how does this work with more than one column?". Specifically, do the values in all of the columns have to match (in the same records)? It's not always clear how that works, from the very simple examples that are given. Thanks.
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