I need to extract the week of the year across multiple databases (this
needs to work on at-least sqlite and postgres, though mysql would be good
too.)
the problem? this operation isn't standard:
sqlite:
select strftime('%W', cast(timestamp_event as text)) from table_a;
postgres:
select extract(week from timestamp_event) from table_a;
mysql: i think extract will work on a timestamp, but it might need to be
cast into a date first. there is also a WEEK function.
how have others handled a need like this?
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