Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tpgZT-00AId0-9a for pgsql-general@arkaria.postgresql.org; Wed, 05 Mar 2025 04:41:27 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1tpgYR-000KtF-JR for pgsql-general@arkaria.postgresql.org; Wed, 05 Mar 2025 04:40:23 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tpgYR-000Ksy-7o for pgsql-general@lists.postgresql.org; Wed, 05 Mar 2025 04:40:23 +0000 Received: from mail-pj1-x1030.google.com ([2607:f8b0:4864:20::1030]) by makus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.96) (envelope-from ) id 1tpgYP-0012Kn-1U for pgsql-general@lists.postgresql.org; Wed, 05 Mar 2025 04:40:22 +0000 Received: by mail-pj1-x1030.google.com with SMTP id 98e67ed59e1d1-2f9d3d0f55dso10266936a91.1 for ; Tue, 04 Mar 2025 20:40:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1741149620; x=1741754420; darn=lists.postgresql.org; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=Cs6WUE8ZOE+8vjN8vT8zsVkmq2cwpQIKH8+YLK+o4oo=; b=iBptdWPgztsVZ1cns5ab8wmQZKlz6YHX0TzzXIZ+Hna7mWBbZTfmxaFe84dXvOnZd2 +fFZ8QngxmEMgj0m6vwzoQ6qSPKGQVB2VsWMKKonr3AG4DgjjOz+g6fHqvxxU+qO3JSx l34wQ6a7oqEKHmy1VE/BnA254Sp3Il1WXBLuYjoFXPHbmjP8JFPfCAx3QfaWWqD7cgNS nkLqH6U5UBvmjaveKAtlRAqKqMQBFalGQItGnrRyNsNtaG5CLjL7m8t1cpv4Nu78wV+w XzyeyNtm54ePBNCKnEPeLujeqGXW5pjSHzpKRE4LXV0fvwkORrxrQbyk1Wq1GqhHbZZ3 em8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1741149620; x=1741754420; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Cs6WUE8ZOE+8vjN8vT8zsVkmq2cwpQIKH8+YLK+o4oo=; b=SptFggKZ1tRaQPIyWs4oVcjv8cCBBhToZsM6VyKa4ZPK7DOn3J2HXbbx8LD1LTOSMd rm7Gt0MJgDSqXq5iNusIn+7doQfqGJSHmCICDOBetiykEKg+7bTC0w1fUheaWZIAiVD/ nrKTGzXFIJDMFpcjEa6idMw6dfTl4deDTuVYmO87lNbRSYCl3QiPeTA3X8fplkZSqcpn IcvMeyG0r7gmGxe+tSS3llMfyjPHDHeKr51FcpwxQ8OyVqYmEjS8cU0MoaWXAF1DNaZg QZEhSWw6uUUQInx03ODZeh9gJa34FT3nA1Quc5X5SamIc7OJirWmMhL8w+z9l31rEoaW dQ3Q== X-Gm-Message-State: AOJu0Yy2nOcatDFUwa4ojYo8LGuaVGcxlAW+n96dqqmhCb9bXEEahQ+C 5rzgz8A4mxy2AmX14Nnu3H2/WbmU9ZhAUp3Mwlcb48dY4qA6/0jzFvhC2/2HPzmcVn/Mbye4USg k61FF7eYqgSAZc9W2warNcVLTI9PnwKuRwv4xlcHn X-Gm-Gg: ASbGnctwYRNp8XlEMmYRe/xqYtM2cRbDHuhzvcZL1M/WG0ngQ8JOALJfOHijxz2TBPG TkLPGpjbGKmkyKIA9ai087AcvlL8sPP5RU0fQaPNvsYptmuZtJBu0McXM9IrUqcyiK59DuwP0Ha k/ESKD4Hh+GCDu7xLfi/oL1Y1ISjg= X-Google-Smtp-Source: AGHT+IH/t2uae3QEZYss4tmQx7ZCiQRWzgh8P0si0tP7xpFP8N7ZF9cDNJ/18pQMybU9hxYfQQdqGpwwOvQoWLhHQEE= X-Received: by 2002:a17:90b:4d85:b0:2f1:2fa5:1924 with SMTP id 98e67ed59e1d1-2ff497a01b0mr2879663a91.26.1741149620066; Tue, 04 Mar 2025 20:40:20 -0800 (PST) MIME-Version: 1.0 From: me nefcanto Date: Wed, 5 Mar 2025 08:10:09 +0330 X-Gm-Features: AQ5f1JouQp0iyUpQPsx5kOSzNT2pO6vJ3jHsUT7vPaKNgtbyl2NH01R7VD52tUs Message-ID: Subject: Quesion about querying distributed databases To: pgsql-general@lists.postgresql.org Content-Type: multipart/alternative; boundary="0000000000009ae3ca062f90fcd8" List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk --0000000000009ae3ca062f90fcd8 Content-Type: text/plain; charset="UTF-8" Hello Consider this scenario: - 3 servers, 3 databases, each on a separate server: - *Products database*: Contains the *Products* table (with over 100,000 records). - *Taxonomy database*: Contains the *Categories* and *ItemCategories (EAV)* tables. - *Attributes database*: Contains the *Attributes* and *ItemAttributes (EAV)* tables. How do you find products based on the following criteria? 1. A search in the title (e.g., "awesome shirts"). 2. Selected categories (e.g., "casual" and "sports"). 3. Selected attributes (e.g., "color: blue" and "size: large") Regards Saeed --0000000000009ae3ca062f90fcd8 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hello

Consider this scenario:

  • 3 servers, 3 = databases, each on a separate server:
    • Products database: Contains the Products table (with over 100,000 recor= ds).
    • Taxonomy database: Contains the Categ= ories and ItemCategories (EAV) tables.
    • Attributes database: Contains the Attributes and ItemAttributes (EAV) tables.

H= ow do you find products based on the following criteria?

  1. A searc= h in the title (e.g., "awesome shirts").
  2. Selected categor= ies (e.g., "casual" and "sports").
  3. Selected att= ributes (e.g., "color: blue" and "size: large")

    4. Regards
    Saeed
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