in database-bridge-lambda/src/sql/Item.ts [28:37]
SELECT json_agg(
json_build_object(
'label', concat('@', "shorthand"),
'isMe', EXISTS(
SELECT 1
FROM "User",
"GroupMember"
WHERE "GroupMember"."groupShorthand" = "shorthand"
AND "GroupMember"."userGoogleID" = "User"."googleID"
AND "User"."email" = ${userEmail}