update

sqlite/create_db.py

@@ -26,7 +26,8 @@ CREATE TABLE IF NOT EXISTS timestamp_table  (
 )
 """)
 cursor.execute("""
-    INSERT INTO timestamp_table (id, last_updated) VALUES (1, CURRENT_TIMESTAMP);
+    INSERT OR REPLACE INTO timestamp_table (id, last_updated) 
+    VALUES (1, CURRENT_TIMESTAMP);
 """)
 
 
@@ -42,6 +43,14 @@ CREATE TABLE IF NOT EXISTS data_NPM (
 )
 """)
 
+# Create a table CO2
+cursor.execute("""
+CREATE TABLE IF NOT EXISTS data_CO2 (
+    timestamp TEXT,
+    CO2 INTEGER
+)
+""")
+
 # Create a table BME280
 cursor.execute("""
 CREATE TABLE IF NOT EXISTS data_BME280 (