I said:
>> symbol_data | symbol_name | 0 | 7 | 152988 |
>> {EBALX,ELTE,LIT,OEX,RESC,BS,ESH,HOC,IBC,IDA} |
>> {0.0183333,0.0173333,0.00166667,0.00166667,0.00166667,0.00133333,0.00133333,0.00133333,0.00133333,0.00133333}
>> | {A,BMO,DBD,FSCHX,IIX,MAS,NSANY,PTEC,SR,UTIL,_^^VPM} | 0.128921
>> (1 row)
> What this says is that in the last ANALYZE, EBALX accounted for 18% of
> the sample, and ELTE for 17%.
Argh, make that 1.8% and 1.7%.
That's still orders of magnitude away from what you say the correct
frequency is, however: 687 out of 20+ million. I'd like to think that
the statistical sampling would be unlikely to make such a large error.
regards, tom lane