How to search for composite type array - Mailing list pgsql-general

From ChoonSoo Park
Subject How to search for composite type array
Date
Msg-id CACgbiFtfrX5SGFEZSPDFpAOE=PtqA8UzJXDOF8Mq-n3HcnTgUA@mail.gmail.com
Whole thread Raw
Responses Re: How to search for composite type array  ("David Johnston" <polobo@yahoo.com>)
List pgsql-general
Hello postgresql gurus,

I want to have an array of composite type in a table. Retrieving/saving value work fine.
 
I just wonder how I can search against composite type array.

CREATE TYPE CompXYZ AS (
         attr1         integer,
         attr2         text,
         attr3         inet
);

CREATE TABLE sample (
         id             integer not null primary key,
         list           CompXYZ[]
);

insert into sample values (1, '{"(1,abc,127.0.0.1)", "(5,def,10.0.1.2)"}');
insert into sample values (2, '{"(10,hello,127.0.0.1)", "(20,def,10.0.1.2)"}');
insert into sample values (3, '{"(20,hello,10.1.1.1)", "(30,there,10.1.1.2)"}');

How I can search a row containing "hello" for attr2?

I know if I have a separate table for saving 3 attributes along with foreign key to sample table, then I can achieve my goal.
I just want to know if there is a way to do the same thing using composite array.

Thank you,
Choon Park
         

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