Add Update test

Author: erimatnor

test/sql/updates/post.compression.sql

@@ -25,18 +25,18 @@ SELECT * FROM compress ORDER BY time DESC, small_cardinality, large_cardinality,
 \x on
 WITH hypertables AS (
         SELECT ht.id hypertable_id,
-	       ht.schema_name,
-	       ht.table_name,
-	       ht.compressed_hypertable_id
+           ht.schema_name,
+           ht.table_name,
+           ht.compressed_hypertable_id
           FROM pg_class cl JOIN pg_namespace ns ON ns.oid = relnamespace
-	  JOIN _timescaledb_catalog.hypertable ht ON relname = ht.table_name AND nspname = ht.schema_name
+      JOIN _timescaledb_catalog.hypertable ht ON relname = ht.table_name AND nspname = ht.schema_name
     ),
     table_summary AS (
-	SELECT format('%I.%I', ht1.schema_name, ht1.table_name) AS hypertable_name,
-	       format('%I.%I', ht2.schema_name, ht2.table_name) AS compressed_hypertable_name,
-	       format('%I.%I', ch2.schema_name, ch2.table_name) AS compressed_chunk_name
-	FROM hypertables ht1
-	JOIN hypertables ht2 ON ht1.compressed_hypertable_id = ht2.hypertable_id
+    SELECT format('%I.%I', ht1.schema_name, ht1.table_name) AS hypertable_name,
+           format('%I.%I', ht2.schema_name, ht2.table_name) AS compressed_hypertable_name,
+           format('%I.%I', ch2.schema_name, ch2.table_name) AS compressed_chunk_name
+    FROM hypertables ht1
+    JOIN hypertables ht2 ON ht1.compressed_hypertable_id = ht2.hypertable_id
         JOIN _timescaledb_catalog.chunk ch2 ON ch2.hypertable_id = ht2.hypertable_id
     )
 SELECT hypertable_name,
@@ -49,3 +49,19 @@ SELECT hypertable_name,
   ORDER BY hypertable_name, compressed_hypertable_name, compressed_chunk_name;
 \x off
 
+DO $$
+DECLARE
+  ts_minor int := (SELECT (string_to_array(extversion,'.'))[2]::int FROM pg_extension WHERE extname = 'timescaledb');
+BEGIN
+
+  -- Enable chunk skipping. For versions smaller than minor 18 we do
+  -- this in the post step since the feature and settings aren't all
+  -- available in proior versions.
+  IF ts_minor < 18 THEN
+     SET timescaledb.enable_chunk_skipping = true;
+     PERFORM enable_chunk_skipping('compress', 'some_int');
+  END IF;
+END
+$$;
+
+SELECT * FROM _timescaledb_catalog.chunk_column_stats ORDER BY id;

test/sql/updates/setup.compression.sql

@@ -29,9 +29,6 @@ INSERT INTO compress
 SELECT g, 'POR', g::text, 'lint', 94.0, 45, (3,4)::custom_type_for_compression, true
 FROM generate_series('2018-11-01 00:00'::timestamp, '2018-12-15 00:00'::timestamp, '1 day') g;
 
--- Add column stats for chunk skipping
-SELECT enable_chunk_skipping('compress', 'some_int');
-
 DO $$
 DECLARE
   ts_minor int := (SELECT (string_to_array(extversion,'.'))[2]::int FROM pg_extension WHERE extname = 'timescaledb');
@@ -49,6 +46,14 @@ BEGIN
   IF ts_minor >= 10 THEN
     ALTER TABLE compress DROP COLUMN dropped;
   END IF;
+
+  -- Enable chunk skipping. Doing this after compression to have a
+  -- "special" chunk_id entry of 0, since this is changed to NULL
+  -- during upgrade.
+  IF ts_minor >= 18 THEN
+     SET timescaledb.enable_chunk_skipping = true;
+     PERFORM enable_chunk_skipping('compress', 'some_int');
+  END IF;
 END
 $$;