PB_968 Re-Added SQL Script to load random DB data

The script is outdated, as the models have new fields. We still want to
keep the file as a starting point for future endeavors of adding random
data to STAC

scripts/sql/load_random_data.sql

@@ -0,0 +1,95 @@
+/*
+this query will load random data into:
+- stac_api_collection   (10 collections)
+- stac_api_item         (500'000 items / collection)
+
+you can set the number of collections and the number of items for each collection.
+see inline comments
+
+NOTE #########
+As of 2025, this script is outdated. Several new model fields have been added.
+If you want to use this, please update the script beforehand.
+
+*/
+
+
+begin;
+
+TRUNCATE TABLE stac_api_collection CASCADE;
+
+-- load random collections
+WITH sample_collection AS (
+select generate_series(1,10) as id,  -- second number is the number of random collections to create
+	random() as integer_random, 'test'
+	, md5(random()::text) as text_random
+)
+INSERT INTO stac_api_collection (id, name, created, updated, description, license, summaries, etag, published, summaries_eo_gsd, summaries_geoadmin_variant, summaries_geoadmin_lang, summaries_proj_epsg)
+select id
+, concat('collection-',id) as name
+, now() + random() * interval '-365 days' as created	-- random timestamp within the last year
+, now() + random() * interval '-365 days' as updated	-- random timestamp within the last year
+, concat_ws(' - ', 'description ',id,text_random) as description
+, 'license' as license
+, '{
+    "eo:gsd": [],
+    "proj:epsg": [
+        2056
+    ],
+    "geoadmin:variant": []
+}'::jsonb as summaries
+, text_random as etag
+, TRUE as published
+, '{}' as summaries_eo_gsd
+, '{}' as summaries_geoadmin_variant
+, '{}' as summaries_geoadmin_lang
+, '{}' as summaries_proj_epsg
+
+FROM sample_collection;
+
+
+-- load random items
+EXPLAIN ANALYZE VERBOSE -- comment out if you dont want explain analyze output of the insert
+WITH
+spatial_extent as (
+	SELECT
+	2400000 as xmin
+	, 2800000 as xmax
+	, 1000000 as ymin
+	, 1350000 as ymax
+	, 50000 as width
+)
+, collections AS (
+	select
+	id
+	, name
+	FROM stac_api_collection
+), items as (
+SELECT
+	generate_series(1,10000) as id  -- second number is the number of random items per collections
+	-- each item will get a random extent / geometry
+	, st_setsrid(concat(
+		'BOX(',
+		spatial_extent.xmin,
+		' ',
+		spatial_extent.ymin,
+		',',
+		spatial_extent.xmin+spatial_extent.width,
+		' ',
+		spatial_extent.ymin+spatial_extent.width,
+		')'
+		)::box2d::geometry,2056) as sample_box
+	from spatial_extent
+)
+INSERT INTO stac_api_item ( name, geometry, created, updated, etag, collection_id)
+select
+	concat_ws('-',collections.name,'item',items.id)  as name
+	, st_transform(st_translate(sample_box
+	,random()*(spatial_extent.xmax-spatial_extent.xmin-spatial_extent.width)::integer
+	,random()*(spatial_extent.ymax-spatial_extent.ymin-spatial_extent.width)::integer),4326) as geometry
+	, now() + random() * interval '-365 days' as created	-- random timestamp within the last year
+	, now() + random() * interval '-365 days' as updated	-- random timestamp within the last year
+	, md5(random()::text) as etag
+	, collections.id as collection_id
+from collections,items,spatial_extent order by 1 asc;
+
+rollback;