mirror of
https://github.com/Xe138/AI-Trader.git
synced 2026-04-02 01:27:24 -04:00
Bill
84320ab8a5
Document the critical bug fixes for position tracking: - Cash reset to initial value each day - Positions lost over weekends - Incorrect profit calculations treating trades as losses Update database schema documentation to explain the corrected profit calculation logic that compares to start-of-day portfolio value instead of previous day's final value.
127 lines
3.9 KiB
Markdown
127 lines
3.9 KiB
Markdown
# Database Schema
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SQLite database schema reference.
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---
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## Tables
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### jobs
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Job metadata and overall status.
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```sql
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CREATE TABLE jobs (
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job_id TEXT PRIMARY KEY,
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config_path TEXT NOT NULL,
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status TEXT CHECK(status IN ('pending', 'running', 'completed', 'partial', 'failed')),
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date_range TEXT, -- JSON array
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models TEXT, -- JSON array
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created_at TEXT,
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started_at TEXT,
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completed_at TEXT,
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total_duration_seconds REAL,
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error TEXT
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);
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```
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### job_details
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Per model-day execution details.
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```sql
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CREATE TABLE job_details (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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job_id TEXT,
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model_signature TEXT,
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trading_date TEXT,
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status TEXT CHECK(status IN ('pending', 'running', 'completed', 'failed')),
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start_time TEXT,
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end_time TEXT,
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duration_seconds REAL,
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error TEXT,
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FOREIGN KEY (job_id) REFERENCES jobs(job_id) ON DELETE CASCADE
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);
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```
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### positions
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Trading position records with P&L.
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```sql
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CREATE TABLE positions (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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job_id TEXT,
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date TEXT,
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model TEXT,
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action_id INTEGER,
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action_type TEXT,
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symbol TEXT,
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amount INTEGER,
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price REAL,
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cash REAL,
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portfolio_value REAL,
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daily_profit REAL,
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daily_return_pct REAL,
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created_at TEXT
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);
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```
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**Column Descriptions:**
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| Column | Type | Description |
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|--------|------|-------------|
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| id | INTEGER | Primary key, auto-incremented |
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| job_id | TEXT | Foreign key to jobs table |
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| date | TEXT | Trading date (YYYY-MM-DD) |
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| model | TEXT | Model signature/identifier |
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| action_id | INTEGER | Sequential action ID for the day (0 = start-of-day baseline) |
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| action_type | TEXT | Type of action: 'no_trade', 'buy', or 'sell' |
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| symbol | TEXT | Stock symbol (null for no_trade) |
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| amount | INTEGER | Number of shares traded (null for no_trade) |
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| price | REAL | Price per share (null for no_trade) |
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| cash | REAL | Cash balance after action |
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| portfolio_value | REAL | Total portfolio value (cash + holdings value) |
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| daily_profit | REAL | **Daily profit/loss compared to start-of-day portfolio value (action_id=0).** Calculated as: `current_portfolio_value - start_of_day_portfolio_value`. This shows the actual gain/loss from price movements and trading decisions, not affected by merely buying/selling stocks. |
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| daily_return_pct | REAL | **Daily return percentage compared to start-of-day portfolio value.** Calculated as: `(daily_profit / start_of_day_portfolio_value) * 100` |
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| created_at | TEXT | ISO 8601 timestamp with 'Z' suffix |
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**Important Notes:**
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- **Position tracking flow:** Positions are written by trade tools (`buy()`, `sell()` in `agent_tools/tool_trade.py`) and no-trade records (`add_no_trade_record_to_db()` in `tools/price_tools.py`). Each trade creates a new position record.
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- **Action ID sequence:**
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- `action_id=0`: Start-of-day position (created by `ModelDayExecutor._initialize_starting_position()` on first day only)
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- `action_id=1+`: Each trade or no-trade action increments the action_id
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- **Profit calculation:** Daily profit is calculated by comparing current portfolio value to the **start-of-day** portfolio value (action_id=0 for the current date). This ensures that:
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- Buying stocks doesn't show as a loss (cash ↓, stock value ↑ equally)
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- Selling stocks doesn't show as a gain (cash ↑, stock value ↓ equally)
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- Only actual price movements and strategic trading show as profit/loss
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### holdings
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Portfolio holdings breakdown per position.
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```sql
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CREATE TABLE holdings (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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position_id INTEGER,
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symbol TEXT,
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quantity REAL,
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FOREIGN KEY (position_id) REFERENCES positions(id) ON DELETE CASCADE
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);
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```
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### price_data
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Cached historical price data.
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### price_coverage
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Data availability tracking per symbol.
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### reasoning_logs
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AI decision reasoning (when enabled).
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### tool_usage
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MCP tool usage statistics.
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---
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See `api/database.py` for complete schema definitions.
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