refactor: Simplify trading plans table structure with MergeTree engine and default values

src/trading/trading_plan.py

@@ -77,6 +77,13 @@ class TradingPlan:
 def create_trading_plan_table():
     """Create the trading plans table if it doesn't exist"""
     with create_client() as client:
+        # First, try to drop the table if it exists
+        try:
+            client.execute("DROP TABLE IF EXISTS trading_plans")
+        except Exception as e:
+            print(f"Error dropping table: {e}")
+
+        # Create new table with simpler structure
         query = """
         CREATE TABLE IF NOT EXISTS trading_plans
         (
@@ -104,21 +111,22 @@ def create_trading_plan_table():
             max_portfolio_risk Float64,
             adjustments_for_drawdown String,
             risk_controls String,
-            win_rate Nullable(Float64),
-            average_return_per_trade Nullable(Float64),
-            profit_factor Nullable(Float64),
-            historical_backtest_results Nullable(String),
-            real_trade_performance Nullable(String),
-            improvements_needed Nullable(String),
+            win_rate Float64 DEFAULT 0,
+            average_return_per_trade Float64 DEFAULT 0,
+            profit_factor Float64 DEFAULT 0,
+            historical_backtest_results String,
+            real_trade_performance String,
+            improvements_needed String,
             strategy_version UInt32,
             plan_author String,
-            trade_review_notes Nullable(String),
-            future_testing_ideas Nullable(String),
-            sector_focus Nullable(String),
-            fundamental_criteria Nullable(String),
-            options_strategy_details Nullable(String)
+            trade_review_notes String,
+            future_testing_ideas String,
+            sector_focus String,
+            fundamental_criteria String,
+            options_strategy_details String
         ) 
-        ENGINE = Log
+        ENGINE = MergeTree
+        PRIMARY KEY (id)
         """
         client.execute(query)