BTW, You didn't actually use type text for your year column, did
you? No
quotes needed then. Otherwise you'd have to make sure your year values
are all the same length or sorting gets... interesting.
Yep, my comment just before concerns especially this paragraph, I
guess. With not only years but also time spans for my data - so, not
only 1970, 1971.... but also 1970-75, 1975-80 etc. I would need
indeed to use text for my year column. Why get sorting than
"interesting"?
Stef
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
