Reintroduce :num_count variable in postgres query, as for oracle counterpart (for postgres, 15 was hardcoded)Notes: - :num_count comes from a parameter, defaulting to 100, instead of 15 - postgres 9.5 introduced table sampling, similar to what oracle does (but with different syntax) - this postgres query would be portable, except for random()... maybe the random value could come from tcl...
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