Feature/query store timeslicer

CITATION.cff

@@ -0,0 +1,21 @@
+cff-version: 1.2.0
+title: "SQL Server Performance Studio"
+message: "If you use this software, please cite it as below."
+type: software
+authors:
+  - given-names: Erik
+    family-names: Darling
+    affiliation: "Darling Data, LLC"
+    website: "https://erikdarling.com"
+repository-code: "https://github.com/erikdarlingdata/PerformanceStudio"
+license: MIT
+version: "1.2.0"
+date-released: "2026-03-18"
+keywords:
+  - sql-server
+  - execution-plan
+  - query-plan-analyzer
+  - query-optimization
+  - mcp-server
+  - cross-platform
+  - dba-tools

llms.txt

@@ -0,0 +1,21 @@
+# SQL Server Performance Studio
+
+> Free, open-source SQL Server execution plan analyzer by Erik Darling (Darling Data, LLC). Cross-platform desktop GUI (Avalonia) and CLI tool with 30 analysis rules that identify memory grants, row estimate mismatches, missing indexes, spills, parallel skew, parameter sniffing, implicit conversions, and more. Built-in MCP server for AI-assisted plan analysis. SSMS extension for one-click plan transfer. Runs on Windows, macOS, and Linux. MIT licensed.
+
+- Analyzes .sqlplan XML files or captures plans live from SQL Server
+- 30 rules covering memory, estimates, indexes, parallelism, joins, filters, functions, parameters, patterns, compilation, objects, and operators
+- Query Store browser with search by identifier, multi-plan history charting, and in-line bar charts
+- CLI supports batch processing of .sql file directories with JSON and text output
+- Built-in MCP server with 13 tools for plan analysis and Query Store data
+- SSMS 18-22 extension adds "Open in Performance Studio" context menu
+
+## Documentation
+
+- [README](https://github.com/erikdarlingdata/PerformanceStudio/blob/main/README.md): Complete documentation including quick start, CLI reference, analysis rules, MCP server setup, and platform support
+- [Releases](https://github.com/erikdarlingdata/PerformanceStudio/releases): Download pre-built binaries for Windows, macOS, and Linux
+- [Examples](https://github.com/erikdarlingdata/PerformanceStudio/tree/main/examples): Sample queries, plans, and analysis output
+
+## Optional
+
+- [License](https://github.com/erikdarlingdata/PerformanceStudio/blob/main/LICENSE): MIT License
+- [Third-party notices](https://github.com/erikdarlingdata/PerformanceStudio/blob/main/THIRD_PARTY_NOTICES.md): License information for bundled components

src/PlanViewer.App/App.axaml

@@ -20,6 +20,7 @@
         <ResourceDictionary>
             <ResourceDictionary.MergedDictionaries>
                 <ResourceInclude Source="avares://PlanViewer.App/Themes/DarkTheme.axaml"/>
+                <ResourceInclude Source="avares://PlanViewer.App/Themes/BarChartConfig.axaml"/>
             </ResourceDictionary.MergedDictionaries>
         </ResourceDictionary>
     </Application.Resources>

src/PlanViewer.App/Controls/BarChartCell.axaml

@@ -0,0 +1,28 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="PlanViewer.App.Controls.BarChartCell">
+    <Grid RowDefinitions="Auto,4" Margin="2,1">
+        <!-- Numeric value text -->
+        <TextBlock x:Name="ValueText"
+                   Grid.Row="0"
+                   FontSize="11"
+                   VerticalAlignment="Center"
+                   Foreground="{DynamicResource ForegroundBrush}"/>
+
+        <!-- Bar row: background track + coloured fill -->
+        <Grid Grid.Row="1" ColumnDefinitions="*">
+            <Border x:Name="BarTrack"
+                    Height="3"
+                    CornerRadius="1"
+                    Background="{DynamicResource BackgroundLightBrush}"
+                    HorizontalAlignment="Stretch"
+                    VerticalAlignment="Center"/>
+            <Border x:Name="BarFill"
+                    Height="3"
+                    CornerRadius="1"
+                    HorizontalAlignment="Left"
+                    VerticalAlignment="Center"
+                    MinWidth="0"/>
+        </Grid>
+    </Grid>
+</UserControl>

src/PlanViewer.App/Controls/BarChartCell.axaml.cs

@@ -0,0 +1,140 @@
+using Avalonia;
+using System;
+using Avalonia.Controls;
+using Avalonia.Media;
+
+namespace PlanViewer.App.Controls;
+
+/// <summary>
+/// A DataGrid cell control that shows a text value above a proportional bar.
+/// The bar colour is resolved from application resources using the priority:
+///   BarChart.&lt;ColumnId&gt;  →  BarChart.Sorted (when isSorted)  →  BarChart.Default
+/// </summary>
+public partial class BarChartCell : UserControl
+{
+    // ── Avalonia properties ────────────────────────────────────────────────
+
+    public static readonly StyledProperty<string> DisplayTextProperty =
+        AvaloniaProperty.Register<BarChartCell, string>(nameof(DisplayText), string.Empty);
+
+    /// <summary>Value in [0..1] that controls the bar width.</summary>
+    public static readonly StyledProperty<double> RatioProperty =
+        AvaloniaProperty.Register<BarChartCell, double>(nameof(Ratio), 0.0);
+
+    /// <summary>Column identifier used to look up per-column brush overrides.</summary>
+    public static readonly StyledProperty<string> ColumnIdProperty =
+        AvaloniaProperty.Register<BarChartCell, string>(nameof(ColumnId), string.Empty);
+
+    /// <summary>When true the "Sorted" brush is preferred over "Default".</summary>
+    public static readonly StyledProperty<bool> IsSortedColumnProperty =
+        AvaloniaProperty.Register<BarChartCell, bool>(nameof(IsSortedColumn), false);
+
+    // ── CLR accessors ──────────────────────────────────────────────────────
+
+    public string DisplayText
+    {
+        get => GetValue(DisplayTextProperty);
+        set => SetValue(DisplayTextProperty, value);
+    }
+
+    public double Ratio
+    {
+        get => GetValue(RatioProperty);
+        set => SetValue(RatioProperty, value);
+    }
+
+    public string ColumnId
+    {
+        get => GetValue(ColumnIdProperty);
+        set => SetValue(ColumnIdProperty, value);
+    }
+
+    public bool IsSortedColumn
+    {
+        get => GetValue(IsSortedColumnProperty);
+        set => SetValue(IsSortedColumnProperty, value);
+    }
+
+    // ── Constructor ────────────────────────────────────────────────────────
+
+    public BarChartCell()
+    {
+        InitializeComponent();
+    }
+
+    // ── Property-change overrides ──────────────────────────────────────────
+
+    protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change)
+    {
+        base.OnPropertyChanged(change);
+
+        if (change.Property == DisplayTextProperty)
+            UpdateText();
+        else if (change.Property == RatioProperty || change.Property == BoundsProperty)
+            UpdateBar();
+        else if (change.Property == ColumnIdProperty || change.Property == IsSortedColumnProperty)
+            UpdateBarColor();
+    }
+
+    protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
+    {
+        base.OnAttachedToVisualTree(e);
+        UpdateText();
+        UpdateBar();
+        UpdateBarColor();
+    }
+
+    // ── Helpers ────────────────────────────────────────────────────────────
+
+    private void UpdateText()
+    {
+        if (ValueText != null)
+            ValueText.Text = DisplayText;
+    }
+
+    private void UpdateBar()
+    {
+        if (BarTrack == null || BarFill == null) return;
+
+        var ratio = global::System.Math.Max(0.0, global::System.Math.Min(1.0, Ratio));
+        var trackWidth = BarTrack.Bounds.Width;
+
+        // Fall back to control width when layout hasn't run yet
+        if (trackWidth <= 0)
+            trackWidth = Bounds.Width - 4; // subtract Margin="2,1" × 2
+
+        BarFill.Width = trackWidth > 0 ? ratio * trackWidth : 0;
+    }
+
+    private void UpdateBarColor()
+    {
+        if (BarFill == null) return;
+
+        // 1. Per-column override
+        if (!string.IsNullOrEmpty(ColumnId) &&
+            Application.Current!.TryFindResource($"BarChart.{ColumnId}", out var colRes) &&
+            colRes is IBrush colBrush)
+        {
+            BarFill.Background = colBrush;
+            return;
+        }
+
+        // 2. Sorted vs Default
+        var key = IsSortedColumn ? "BarChart.Sorted" : "BarChart.Default";
+        if (Application.Current!.TryFindResource(key, out var res) && res is IBrush brush)
+            BarFill.Background = brush;
+        else
+            BarFill.Background = IsSortedColumn
+                ? new SolidColorBrush(Color.FromRgb(0x2E, 0xAE, 0xF1))
+                : new SolidColorBrush(Color.FromRgb(0x3A, 0x6E, 0xA8));
+    }
+
+    // ── Layout override to update bar after measure ─────────────────────--
+
+    protected override Size ArrangeOverride(Size finalSize)
+    {
+        var result = base.ArrangeOverride(finalSize);
+        UpdateBar();
+        return result;
+    }
+}

src/PlanViewer.App/Controls/QuerySessionControl.axaml.cs

@@ -973,6 +973,8 @@ private bool HasQueryStoreTab()
             .Any(t => t.Content is QueryStoreGridControl);
     }
 
+    public void TriggerQueryStore() => QueryStore_Click(null, new RoutedEventArgs());
+
     private async void QueryStore_Click(object? sender, RoutedEventArgs e)
     {
         // If a QS tab already exists, always show connection dialog for a fresh tab