Practice 3 using the provided json as-is

docs/practices.md

@@ -79,3 +79,38 @@ FROM japan_segments
 ```
 
 ![Kagoshima segments](./img/kagoshima_segments.png)
+
+
+```sql
+SELECT id FROM japan_segments
+WHERE ST_Within(
+    bounds,
+    ST_SetSRID(ST_GeomFromGeoJSON('{
+        "type": "Polygon",
+        "coordinates": [
+            [
+                [
+                    130.27313232421875,
+                    30.519681272749402
+                ],
+                [
+                    131.02020263671875,
+                    30.519681272749402
+                ],
+                [
+                    131.02020263671875,
+                    30.80909017893796
+                ],
+                [
+                    130.27313232421875,
+                    30.80909017893796
+                ],
+                [
+                    130.27313232421875,
+                    30.519681272749402
+                ]
+            ]
+        ]
+    }'), 4326)
+);
+```

test/test_example.py

@@ -169,7 +169,40 @@ class TestExample(DbTest):
             os.path.join(PATH_TO_SQL_DIR, "japan_segments.sql")
         )
 
+        # Taking this task very literally and using the GeoJSON
+        # directly with PostGIS `ST_GeomFromGeoJSON`
         sql = """
+        SELECT id FROM japan_segments
+        WHERE ST_Within(
+            bounds,
+            ST_SetSRID(ST_GeomFromGeoJSON('{
+                "type": "Polygon",
+                "coordinates": [
+                    [
+                        [
+                            130.27313232421875,
+                            30.519681272749402
+                        ],
+                        [
+                            131.02020263671875,
+                            30.519681272749402
+                        ],
+                        [
+                            131.02020263671875,
+                            30.80909017893796
+                        ],
+                        [
+                            130.27313232421875,
+                            30.80909017893796
+                        ],
+                        [
+                            130.27313232421875,
+                            30.519681272749402
+                        ]
+                    ]
+                ]
+            }'), 4326)
+        );
         """
         with conn.cursor(cursor_factory=RealDictCursor) as cur:
             cur.execute(sql)