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I agree the readability is important, but I also agree with John that
Chuck's reply is, at the most, arguably harder to read.
In general it's better to convert the input variable and not the table
being searched.
Do this:
select customer_number, customer_name from customermaster where
customer_number=decimal(:custNumAsChar,6,0);
Not this:
select customer_number, customer_name from customermaster where
digits(customer_number)=:custNumAsChar;
If you have an index over customer number the former will use it but the
latter won't.
See if that's a simpler example to run by your coworkers. One is not more
readable than the other.
Rob Berendt
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