sql - 查询OTRS数据库

我在从OTRS对postgresql数据库创建查询时遇到问题。我需要获取一个资产列表，其中包含存储在CMDB中的一些数据，但我在存储数据的方式上遇到了问题。
这个查询可以正常工作，但只要我添加另一个左连接以获取更多数据，它就会永远运行而不返回任何结果。
据我所见，问题是所有信息都包含在xml_存储表中，没有任何关系，因此我需要重复查询该表以获取数据。还有一种混合的数据类型，其中整数在某些情况下存储为可变字符，这使我无法使用该值从常规目录中获取其他信息。
几天来我一直在用头撞砖墙，所以我非常感谢你的帮助

SELECT
      asset_value,
      manufacturer_value,
      model_value,
      serial_value,
      fqdn_value,
      array_agg(service),
      purchasedate_value,
      status_value,
      configitem.configitem_number,
      configitem_version.name,
      general_catalog.name

    FROM
      public.configitem_version,
      public.general_catalog,
      public.configitem

    left join
      (SELECT
      xml_storage.xml_content_value AS asset_value,
      xml_storage.xml_key
      FROM
      public.xml_storage
      WHERE
      xml_content_key = '[1]{''Version''}[1]{''Asset Number''}[1]{''Content''}')   as select_asset on last_version_id::int = select_asset.xml_key::int

    left join
      (SELECT
      xml_storage.xml_content_value AS manufacturer_value,
      xml_storage.xml_key
      FROM
      public.xml_storage
      WHERE
      xml_content_key = '[1]{''Version''}[1]{''Manufacturer''}[1]{''Content''}' ) as select_manufacturer on last_version_id::int = select_manufacturer.xml_key::int

    left join
      (SELECT
      xml_storage.xml_content_value AS model_value,
      xml_storage.xml_key
      FROM
      public.xml_storage
      WHERE
      xml_content_key = '[1]{''Version''}[1]{''Model''}[1]{''Content''}' ) as select_model on last_version_id::int = select_model.xml_key::int

    left join
      (SELECT
      xml_storage.xml_content_value AS serial_value,
      xml_storage.xml_key
      FROM
      public.xml_storage
      WHERE
      xml_content_key = '[1]{''Version''}[1]{''SerialNumber''}[1]{''Content''}' ) as select_serial on last_version_id::int = select_serial.xml_key::int

    left join
      (SELECT
      xml_storage.xml_content_value AS fqdn_value,
      xml_storage.xml_key
      FROM
      public.xml_storage
      WHERE
      xml_content_key = '[1]{''Version''}[1]{''FQDN''}[1]{''Content''}' ) as select_fqdn on last_version_id::int = select_fqdn.xml_key::int

    left join
      (SELECT
      link_relation.source_key AS "configitem_id",
      service.name AS "service"
      FROM
      public.link_relation,
      public.service
      WHERE
      link_relation.target_key::int = service.id AND
      link_relation.target_object_id::int = 2 AND link_relation.source_object_id::int = 3
      UNION
      SELECT
      link_relation.target_key AS "configitem_id",
      service.name AS "service"
      FROM
      public.link_relation,
      public.service
      WHERE
      link_relation.source_key::int = service.id AND
      link_relation.target_object_id::int = 3 AND link_relation.source_object_id::int = 2) as select_service on configitem.id = configitem_id::int

    left join
      (SELECT
      xml_storage.xml_content_value AS purchasedate_value,
      xml_storage.xml_key
      FROM
      public.xml_storage
      WHERE
      xml_content_key = '[1]{''Version''}[1]{''PurchaseDate''}[1]{''Content''}' ) as select_purchasedate on last_version_id::int = select_purchasedate.xml_key::int

    left join
      (SELECT
      general_catalog.name AS status_value,
      general_catalog.id
      FROM
      public.general_catalog) as select_status on configitem.cur_depl_state_id::int = select_status.id::int

    WHERE
      configitem.last_version_id = configitem_version.id AND
      configitem.class_id = general_catalog.id AND
      (configitem.class_id = 32 OR configitem.class_id = 33)


    GROUP BY
      asset_value,
      manufacturer_value,
      model_value,
      serial_value,
      fqdn_value,
      purchasedate_value,
      status_value,
      configitem.configitem_number,
      configitem_version.name,
      general_catalog.name

    ;

最佳答案

您是否可以使用OTRS API而不是查询？这样你的数据就容易一点了。
此外，ImportExport模块允许将数据导出到.csv文件；根据您的需要，这可能是一个选项。

关于sql - 查询OTRS数据库，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/13237579/