Add model/lens fields to the images table, and make upgrade code to populate

[pr0n] / sql / upgrade-v2.50.sql

diff --git a/sql/upgrade-v2.50.sql b/sql/upgrade-v2.50.sql
index d59ee9e13497a838033cb34e1cb4236d1d1b3aaa..99cc11d1d529168a7dd7f80a2829824497a01622 100644 (file)
--- a/sql/upgrade-v2.50.sql
+++ b/sql/upgrade-v2.50.sql
@@ -31,3 +31,18 @@ ALTER TABLE deleted_images ALTER COLUMN width SET DEFAULT NULL;
 ALTER TABLE deleted_images ALTER COLUMN height SET DEFAULT NULL;
 UPDATE deleted_images SET width=NULL,height=NULL WHERE width=-1 OR height=-1;
 ALTER TABLE deleted_images ADD CONSTRAINT width_height_nullity CHECK ((width IS NULL) = (height IS NULL));
+
+-- model/lens denormalization (reduce usage of exif_info)
+ALTER TABLE images ADD COLUMN model varchar;
+ALTER TABLE images ADD COLUMN lens varchar;
+UPDATE images SET lens=COALESCE(
+    TRIM((
+        SELECT value FROM exif_info WHERE key='Lens' AND images.id=exif_info.image
+    )),
+    TRIM((
+        SELECT value FROM exif_info WHERE key='LensSpec' AND images.id=exif_info.image
+    ))
+), model=TRIM((
+    SELECT value FROM exif_info WHERE key='Model' AND images.id=exif_info.image
+));
+