creating a table:
CREATE TABLE regions ( region_name VARCHAR PRIMARY KEY, zips VARCHAR ARRAY[10], CONSTRAINT pk PRIMARY KEY (region_name));
Insert
UPSERT INTO regions(region_name,zips) VALUES('SF Bay Area',ARRAY['94115','94030','94125']);
select:
SELECT zip[1] FROM regions WHERE region_name = 'SF Bay Area';
SELECT region_name FROM regions WHERE zip[1] = '94030' OR zip[2] = '94030' OR zip[3] = '94030';
SELECT region_name FROM regions WHERE zip[1] = '94030' OR zip[2] = '94030' OR zip[3] = '94030';