That is probably a blessing in disguise. There are very very good reasons never ever to allow a "NULL" (SQL's version of our undef) in any of the fields of a relational database. It can really screw up the logic of your code and give you unexpected (and wrong) results.

Ask yourself, what does a date with the value of "NULL" mean? Will it be equal, unequal, earlier or later than any other date? Can you do date arithmetic on it (what is "NULL" plus three days?)?

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

In reply to Re: DBI: passing undef as an argument by CountZero
in thread DBI: passing undef as an argument by fws

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