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Update CDB_QuantileBins.sql

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sariogonfer 2015-04-14 20:45:37 +02:00
parent fc95566ddd
commit cbd3c447b6
1 changed files with 3 additions and 3 deletions
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4
scripts-available/CDB_QuantileBins.sql
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@ -18,12 +18,12 @@ BEGIN
-- get our unique values -- get our unique values
SELECT array_agg(e) INTO in_array FROM (SELECT unnest(in_array) e GROUP BY e ORDER BY e ASC) x; SELECT array_agg(e) INTO in_array FROM (SELECT unnest(in_array) e GROUP BY e ORDER BY e ASC) x;
-- get the total size of our row -- get the total size of our row
element_count := array_upper(in_array, 1) - array_lower(in_array, 1); element_count := array_length(in_array, 1);
break_size := element_count::numeric / breaks; break_size := element_count::numeric / breaks;
-- slice our bread -- slice our bread
LOOP LOOP
IF i > breaks THEN EXIT; END IF; IF i > breaks THEN EXIT; END IF;
SELECT e INTO tmp_val FROM ( SELECT unnest(in_array) e LIMIT 1 OFFSET round(break_size * i)) x; SELECT e INTO tmp_val FROM ( SELECT unnest(in_array) e LIMIT 1 OFFSET round(break_size * i) - 1) x;
reply = array_append(reply, tmp_val); reply = array_append(reply, tmp_val);
i := i+1; i := i+1;
END LOOP; END LOOP;