select sex, group_concat(name, ', ') from people group by sex;

(And don't forget to use single quotes for string literals)


-----Original Message-----
From: sqlite-users [mailto:sqlite-users-boun...@mailinglists.sqlite.org] On 
Behalf Of Valentin Davydov
Sent: Wednesday, December 13, 2017 8:57 AM
To: SQLite mailing list
Subject: [sqlite] 2D query

Hi, all!

Given the following table:

CREATE TABLE people(name,sex);
INSERT INTO people VALUES("Alex","F");
INSERT INTO people VALUES("Alex","M");
INSERT INTO people VALUES("Jane","F");
INSERT INTO people VALUES("John","M");

How to construct a query which returns coalesced sex but individual names,
such as "F: Alex, Jane. M: Alex, John."?

Sincerely, 
Valentin Davydov.
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