Enhance schema update logic in insert.py to check for existing columns before...

Enhance schema update logic in insert.py to check for existing columns before adding new ones, preventing duplicate column name warnings.

python/waLBerla/tools/sqlitedb/insert.py

@@ -139,16 +139,26 @@ def checkAndUpdateSchema(data, tableName, dbFile="database.sqlite", referenceRun
     columns = ["%s %s" % e for e in zip(names, types)]
 
     create_query = "CREATE TABLE IF NOT EXISTS %s ( %s );" % (tableName, ",".join(columns))
-    alter_queries = ["ALTER TABLE %s ADD COLUMN %s %s;" % (tableName, key, typ) for key, typ in zip(names, types)]
 
     conn = sqlite3.connect(dbFile)
     c = conn.cursor()
 
+    # Execute the create table query
     c.execute(create_query)
+
     if alter_table:
-        for q in alter_queries:
+        # Fetch existing columns
+        c.execute(f"PRAGMA table_info({tableName})")
+        existing_columns = [info[1] for info in c.fetchall()]
+
+        # Filter out columns that already exist
+        new_columns = [(key, typ) for key, typ in zip(names, types) if key not in existing_columns]
+
+        # Generate and execute alter table queries for new columns
+        for key, typ in new_columns:
+            alter_query = f"ALTER TABLE {tableName} ADD COLUMN {key} {typ};"
             try:
-                c.execute(q)
+                c.execute(alter_query)
             except sqlite3.OperationalError as e:
                 print(e)
                 pass