nngoandClaude Sonnet 4.6
9f0891755e
- ResultsPanel rewritten: single queries show one result as before; scripts with multiple statements show each result in a named sub-tab (e.g. "Result 2 (1,234)") with the tab bar auto-shown/hidden - EditorTab._on_script_done now calls show_script_results() instead of overwriting the panel on each statement - ColumnStatsDialog: right-click any column header in TableViewer to see total rows, null count, distinct values, min, max, and avg (async, gracefully skips avg for non-numeric columns) - TableViewer header context menu also adds "Resize to fit" shortcuts - Ctrl+W closes the current workspace tab (View menu) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
135 lines
4.6 KiB
Python
135 lines
4.6 KiB
Python
"""Column statistics dialog — shows row count, nulls, distinct, min, max, avg."""
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from PyQt6.QtWidgets import (
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QDialog, QVBoxLayout, QFormLayout, QLabel, QDialogButtonBox,
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QGroupBox, QProgressBar, QSizePolicy,
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)
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from PyQt6.QtCore import Qt, QThread, pyqtSignal
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from PyQt6.QtGui import QFont
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class _StatsWorker(QThread):
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result = pyqtSignal(dict)
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error = pyqtSignal(str)
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def __init__(self, driver, database: str, table: str, column: str):
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super().__init__()
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self._driver = driver
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self._database = database
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self._table = table
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self._column = column
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def run(self):
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col = self._column
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tbl = self._table
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try:
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_, rows, _ = self._driver.execute_query(
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f'SELECT COUNT(*), COUNT("{col}"), COUNT(DISTINCT "{col}"), '
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f'MIN("{col}"), MAX("{col}") FROM "{tbl}"'
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)
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total, non_null, distinct, min_val, max_val = rows[0]
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null_count = (total or 0) - (non_null or 0)
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except Exception as e:
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self.error.emit(str(e))
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return
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avg_val = None
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try:
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_, avg_rows, _ = self._driver.execute_query(
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f'SELECT AVG("{col}") FROM "{tbl}"'
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)
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avg_val = avg_rows[0][0]
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except Exception:
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pass
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self.result.emit({
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"total": total,
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"non_null": non_null,
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"nulls": null_count,
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"distinct": distinct,
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"min": min_val,
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"max": max_val,
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"avg": avg_val,
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})
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class ColumnStatsDialog(QDialog):
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def __init__(self, driver, database: str, table: str, column: str, parent=None):
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super().__init__(parent)
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self.setWindowTitle(f"Column Statistics — {column}")
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self.setMinimumWidth(360)
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self._driver = driver
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self._database = database
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self._table = table
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self._column = column
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self._build_ui()
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self._load()
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def _build_ui(self):
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root = QVBoxLayout(self)
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root.setSpacing(10)
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root.setContentsMargins(16, 16, 16, 16)
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subtitle = QLabel(f"<b>{self._table}</b>.<i>{self._column}</i>")
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subtitle.setTextFormat(Qt.TextFormat.RichText)
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root.addWidget(subtitle)
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# ── Stats group ───────────────────────────────────────────────────────
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box = QGroupBox("Statistics")
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self._form = QFormLayout(box)
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self._form.setSpacing(6)
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self._rows: dict[str, QLabel] = {}
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for key, label in [
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("total", "Total rows"),
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("non_null", "Non-null"),
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("nulls", "Null count"),
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("distinct", "Distinct values"),
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("min", "Min"),
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("max", "Max"),
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("avg", "Avg (numeric)"),
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]:
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lbl = QLabel("…")
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lbl.setFont(QFont("Consolas", 10))
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self._form.addRow(label + ":", lbl)
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self._rows[key] = lbl
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root.addWidget(box)
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# ── Loading bar ───────────────────────────────────────────────────────
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self._progress = QProgressBar()
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self._progress.setMaximum(0)
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self._progress.setFixedHeight(6)
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self._progress.setTextVisible(False)
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root.addWidget(self._progress)
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bb = QDialogButtonBox(QDialogButtonBox.StandardButton.Close)
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bb.rejected.connect(self.reject)
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root.addWidget(bb)
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def _load(self):
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self._worker = _StatsWorker(
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self._driver, self._database, self._table, self._column
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)
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self._worker.result.connect(self._on_result)
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self._worker.error.connect(self._on_error)
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self._worker.finished.connect(self._progress.hide)
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self._worker.start()
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def _on_result(self, stats: dict):
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for key, lbl in self._rows.items():
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val = stats.get(key)
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if val is None:
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text = "N/A"
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elif isinstance(val, float):
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text = f"{val:,.4f}"
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else:
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try:
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text = f"{int(val):,}"
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except (TypeError, ValueError):
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text = str(val)
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lbl.setText(text)
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def _on_error(self, msg: str):
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for lbl in self._rows.values():
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lbl.setText("—")
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self._rows["total"].setText(f"Error: {msg[:60]}")
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self._rows["total"].setStyleSheet("color: #e78284;")
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