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Help with an interesting Postgres question: Why isn't an Index Only Scan used on a partition accessed via the parent table?.
year | mn | month | total |
---|---|---|---|
2016 | 4 | apr | 16 |
2014 | 6 | jun | 14 |
2010 | 4 | apr | 17 |
2011 | 6 | jun | 11 |
2012 | 11 | nov | 9 |
2012 | 8 | aug | 18 |
2013 | 4 | apr | 12 |
2012 | 5 | may | 16 |
2014 | 2 | feb | 10 |
2011 | 7 | jul | 5 |
2012 | 3 | mar | 13 |
2014 | 7 | jul | 9 |
2011 | 2 | feb | 11 |
2015 | 1 | jan | 19 |
2012 | 4 | apr | 14 |
SELECT 15
jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | undec | dodec |
---|
SELECT 0
SELECT 7
year | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | undec | dodec |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2010 | 12 | 11 | 16 | 17 | 12 | 10 | 15 | 15 | 9 | 8 | 15 | 14 | null | null |
2011 | 9 | 11 | 9 | 7 | 10 | 11 | 5 | 6 | 9 | 13 | 14 | 20 | null | null |
2012 | 11 | 6 | 13 | 14 | 16 | 14 | 14 | 18 | 9 | 7 | 9 | 10 | null | null |
2013 | 19 | 6 | 16 | 12 | 17 | 16 | 10 | 11 | 9 | 16 | 10 | 13 | null | null |
2014 | 7 | 10 | 12 | 14 | 7 | 14 | 9 | 8 | 15 | 11 | 8 | 13 | null | null |
2015 | 19 | 14 | 11 | 12 | 6 | 11 | 11 | 16 | 9 | 12 | 14 | 14 | null | null |
2016 | 12 | 12 | 6 | 16 | 9 | 14 | 18 | 16 | 13 | 12 | 14 | 7 | null | null |
SELECT 7