On Apr 1, 2012, at 3:21 PM, Simon Slavin wrote:

> Can this be done with a JOIN instead of a sub-SELECT ?

Not in SQLite, as the join clause is not supported in an update statement.

For such functionality, look at MySQL or Postgress which do support variation 
of such syntax.

Something like this would indeed be convenient:

update foo

set        foo.fubar = foo.fubar * bar.fubar

join       bar
on         bar.baz = foo.baz

But sadly, SQLite doesn't provide anything like this.
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