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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?.
9 rows affected
linenr key value grp
2 tags a 1
3 ... b 1
4 title The Title 2
5 note this is 3
6 ... an EXAMPLE 3
8 title over 4
9 ... three 4
10 ... lines 4
11 about grouping 5