Martin Honnen wrote:
Technically it is a question about XPath expressions, if you look at
the specification http://www.w3.org/TR/xpath#booleans then it clearly
says for 'and' expressions:
"The right operand is not evaluated if the left operand evaluates to
false."
And for 'or' expressions:
"The right operand is not evaluated if the left operand evaluates to
true."
So it is not question about optimization, the language specification
prescribes what to do.
Thank you.
It's good to know. This means that order of multiple conditions in
evaluation is important for optimization purposes, the one that is most
likely
to fail should be the first condition.
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