Improve asset backfilling

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

support/timescaledb/999_init.sh

@@ -39,18 +39,10 @@ psql --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
 
     SELECT create_hypertable('bars', 'timestamp', 'asset_symbol', 15);
 
-    CREATE TABLE bars_filled (
-        timestamp TIMESTAMPTZ,
-        asset_symbol TEXT REFERENCES assets(symbol) ON DELETE CASCADE ON UPDATE CASCADE,
-        open DOUBLE PRECISION NOT NULL,
-        high DOUBLE PRECISION NOT NULL,
-        low DOUBLE PRECISION NOT NULL,
-        close DOUBLE PRECISION NOT NULL,
-        volume DOUBLE PRECISION NOT NULL,
-        num_trades BIGINT NOT NULL,
-        volume_weighted DOUBLE PRECISION NOT NULL,
-        PRIMARY KEY (asset_symbol, timestamp)
+    ALTER TABLE bars SET (
+        timescaledb.compress,
+        timescaledb.compress_segmentby = 'asset_symbol'
     );
 
-    SELECT create_hypertable('bars_filled', 'timestamp', 'asset_symbol', 15);
+    SELECT add_compression_policy('bars', INTERVAL '30 days');
 EOSQL