postgresql - How to get matching data from other table? -

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using postgres, have 2 tables:

  • the first called territories columns sid, agent , postcode.

  • the second called postcodes, columns id, postcode , geometry.

how can put geometry column data table postcodes table territories matching postcode?

in query:

select t.*, p.geometry   territories t left join postcodes p on t.postcode=p.postcode

thats works if there not duplicateds postcodes in postcodes table.

if want update table territories, first add column , update it:

update territories t set geometry = p.geometry   postcodes p   t.postcode=p.postcode

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