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Re: poll ideas quest 2012

by chacham (Vicar)
on Apr 19, 2012 at 23:58 UTC ( #966064=note: print w/ replies, xml ) Need Help??

in reply to poll ideas quest 2012

The (redundant) predicate in a SQL EXISTS() predicate should be "SELECT ?":

  • * -- Nothing says "i don't care" like a good asterisk
  • 1 -- "Everyone knows" asterisk causes a useless data dictionary lookup
  • '1' -- Characterizes a number one idea
  • NULL -- Why SELECT anything at all?
  • 'NULL' -- Null strings are best
  • '/dev/null' -- In case you nix the other ideas
  • 'NUL' -- Used in all Windows of opportunity
  • Avoid the issue by using IN() stead
  • Convolute the issue by doing a join

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