You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 

1.5 KiB

SQL practices

ToC

Practice 1

  • Count the number of subordinate 'ENTERPRISE_CUSTOMER' organizations for each organization.
SELECT
    COUNT(customers.*) AS "subordinates_count",
    organizations.id AS "id"
FROM organizations
LEFT OUTER JOIN enterprise_sales_enterprise_customers customers ON customers.sales_organization_id = organizations.id
GROUP BY organizations.id
ORDER BY organizations.id ASC
;

Practice 2

  • Calculate the center of each japan_segment.
SELECT
    id,
    ST_X(ST_Centroid(bounds)) AS "longitude",
    ST_Y(ST_Centroid(bounds)) AS "latitude"
FROM japan_segments
;

Practice 3

  • Select japan_segments within the bounds represented as the following GeoJSON.
{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {},
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              130.27313232421875,
              30.519681272749402
            ],
            [
              131.02020263671875,
              30.519681272749402
            ],
            [
              131.02020263671875,
              30.80909017893796
            ],
            [
              130.27313232421875,
              30.80909017893796
            ],
            [
              130.27313232421875,
              30.519681272749402
            ]
          ]
        ]
      }
    }
  ]
}

Kagoshima segments