> No that is no problem, I think. From the sql-clients point of view,
>   SELECT foo FROM .. just the same as
>   SELECT tags->bla AS foo FROM ..
> The AS construct makes it transparent for the client if the tag comes
> from the hstore or from a normal column. This is why you can just write
> <Filter>[lit] = 'yes'</Filter>, no matter where 'lit' comes from.

Ah, thanks.
I have now switched the live lighting.xml file to use hstore, yay. The
hikebike style is to follow, but that will take a lot more time.

Cheers
  Colin

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