Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1gSn2f-0000Bp-Ix for pgsql-sql@arkaria.postgresql.org; Fri, 30 Nov 2018 17:57:29 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1gSn2e-0007I9-3n for pgsql-sql@arkaria.postgresql.org; Fri, 30 Nov 2018 17:57:28 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1gSn2d-0007Eh-Oh for pgsql-sql@lists.postgresql.org; Fri, 30 Nov 2018 17:57:27 +0000 Received: from mail-qt1-x841.google.com ([2607:f8b0:4864:20::841]) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1gSn2a-0004YJ-Te for pgsql-sql@lists.postgresql.org; Fri, 30 Nov 2018 17:57:27 +0000 Received: by mail-qt1-x841.google.com with SMTP id n21so6847799qtl.6 for ; Fri, 30 Nov 2018 09:57:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=2ndquadrant-com.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :content-transfer-encoding:in-reply-to:user-agent; bh=kobVpATTXnThfD3uiWJFXguikKHkt/hju8YJ3yZj55I=; b=BMfCEChbMSGgu4BzE/RWCppV70Fey8bkcwL0MAMEkpcvS6E5YqVGfjyCEbleWf4YD5 NbWBQapRHEmrpcldrhwsQ29qXAWm41b0hFE+VBqGCkeOJGbY3owS5sMyWWBf07Ty+21o 8oiBK+HxJVNvvp9nOTkibocSedzIJs/UtDBVhz53Rw2AXDwuyQnovWD30pF77VGD8TrR 2JrPgLc8CAjewWDA+62jBaWRIdKJrWyoPhNPqhim04u9iW/trdYxr9nGhHlxsCoASsd/ tiXHVkbR+wYpW//GLpO3scsXb1qjxWln4kNIY6p0nMd9imY8a7/Nl7LvBEJi/chU08wn fK0Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:content-transfer-encoding:in-reply-to :user-agent; bh=kobVpATTXnThfD3uiWJFXguikKHkt/hju8YJ3yZj55I=; b=rVS3dTcsdqCvvzxZWJmcJ7pNsTk5GgpudcXKGUNpaVo9rPiaQEQMiXHygDk7VaNUP6 IJ7V73oh7bFbFjOFgkRuesMYZV8lPnnXnSbyNd4PbIVsVbIrn77iixW/SHH+/9up7al9 UqVxQVsSXjQqBCJG434AjvL35Rfkeo5cOc5kIduvUpd/2j20Jrv0mfOX6T8JuK9U8GYS saRLkHO1l64PdH25KbA6HOUCso43Yhd8UgyouB70931zvitIIl5cXsmXK9nfQ7Uk7CCX HBSwxGumhj64CHqK5L0HY8DOZQoPDTvL6encNduSY9ycIW10RyjqHmTbWBA/8jXJlwwA 9rwQ== X-Gm-Message-State: AA+aEWbGbqZR8Tqkc/GGDNFfuHllCA748pbXc291Wk+CfAzvpQjCXUoI eOaH02WgwIr52MzDXhRzjE9jsA39x362fROaXX0rsQkqlnlyOm7S0frr5527wJ2Ihdu6qTvNwe5 QaxTUhtjyXB7fnW/lkLyOh3zwPvJL9nuIUvO/YGuEaESkM8pECdrxQZxUOuA1bWmNSN2ZeB0uhV tQxgVonE1A X-Google-Smtp-Source: AFSGD/W5yD6GsYze3DeVqceOE9vMTeOvF+gq5+GkRLB4Qntw5b96aaYAqMRko93rq68Fgfdh0thS7Q== X-Received: by 2002:ac8:7181:: with SMTP id w1mr6468705qto.271.1543600642312; Fri, 30 Nov 2018 09:57:22 -0800 (PST) Received: from alvin.alvh.no-ip.org ([190.217.181.150]) by smtp.gmail.com with ESMTPSA id 86sm4066732qky.92.2018.11.30.09.57.21 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 30 Nov 2018 09:57:21 -0800 (PST) Received: by alvin.alvh.no-ip.org (Postfix, from userid 1000) id 92F076A7; Fri, 30 Nov 2018 14:57:19 -0300 (-03) Date: Fri, 30 Nov 2018 14:57:19 -0300 From: Alvaro Herrera To: Adam Jensen Cc: "pgsql-sql@lists.postgresql.org" Subject: Re: interval origami Message-ID: <20181130175719.l7izv65wjwgkls35@alvherre.pgsql> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: NeoMutt/20180716 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk On 2018-Nov-30, Adam Jensen wrote: > A relational database solution is needed. I am not yet very familiar > with relational database design and SQL beyond the very basics. So any > pointers to similar SQL problems with solutions and explanations would > be tremendously useful at this point. Any hints at all, really, will be > much appreciated. This sounds like something you can easily do with range types in Postgres. Probably not terribly portable to other DBMSs though. https://www.postgresql.org/docs/11/rangetypes.html -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services