From d73a526835f7302f898dbb8ff75cbb43114a2bc8 Mon Sep 17 00:00:00 2001
From: Ed Chalstrey <edwardchalstrey@gmail.com>
Date: Thu, 21 Apr 2022 16:48:35 +0100
Subject: [PATCH] refactor query to 3 way join

---
 app/src/tiles/dataDefinition.ts | 24 +++++-------------------
 1 file changed, 5 insertions(+), 19 deletions(-)

diff --git a/app/src/tiles/dataDefinition.ts b/app/src/tiles/dataDefinition.ts
index 8acfb60d..be20beba 100644
--- a/app/src/tiles/dataDefinition.ts
+++ b/app/src/tiles/dataDefinition.ts
@@ -192,27 +192,13 @@ function getDataConfig(tileset: string): DataConfig {
         JOIN
             geometries AS g
         ON d.geometry_id = g.geometry_id
+        JOIN
+            buildings AS b
+        ON d.geometry_id = b.geometry_id
+        WHERE
+            b.latest_demolish_date IS NULL
     ) AS data
     `;
-    
-    if(table == 'buildings') {
-
-        const query = `(
-            SELECT
-                d.*,
-                g.geometry_geom
-            FROM (
-                ${table}
-            ) AS d
-            JOIN
-                geometries AS g
-            ON d.geometry_id = g.geometry_id
-            WHERE
-                d.latest_demolish_date IS NULL
-        ) AS data
-        `;
-        
-    }
 
     return {
         geometry_field: GEOMETRY_FIELD,