I't unnI don't understand this:
The UNION operator specifies a table derived from a Cartesian product.
The two tables that represent the direct operands of the UNION must
have the same number of columns, and corresponding columns must be
of compatible data types.</para>
Why do you call it a cartesian product. I thought a cartesian product
was tableA x tableB, while UNION is really tableA + tableB, right?
If I am right, can you change the docs? I will leave it as is. Thanks.
Bruce Momjian | http://www.op.net/~candle
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