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"be consistent"
 
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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

In reply to Re: poll ideas quest 2012 by chacham
in thread poll ideas quest 2012 by pollsters

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