Pi

February 9, 2010

Joining Arrays in Postgres Sql

Filed under: Uncategorized — rqmedes @ 4:51 am

Here is a handy way of getting the distinct product of one or more arrays in postgres.

SELECT Distinct unnest(array_cat(ARRAY[1,2,3], ARRAY[1,2,4,5]))

anyarray: concatenate two arrays

unnest: expand an array to a set of rows

Results will be

1,2,3,4,5.

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