[QP-6630] Where절에서 사용한 컬럼에 대한 정보를 제공합니다.

Qsi.Debugger/MainWindow.axaml

@@ -147,6 +147,10 @@
                         <Rectangle Margin="0,6" Fill="{DynamicResource ThemeBackgroundBrush}" Height="2" />
                     </TreeDataTemplate>
 
+                    <TreeDataTemplate DataType="md:QsiLabelTreeItem">
+                        <TextBlock Foreground="LightGray" Text="{Binding Label}"></TextBlock>
+                    </TreeDataTemplate>
+
                     <TreeDataTemplate DataType="md:QsiColumnTreeItem" ItemsSource="{Binding Items}">
                         <StackPanel Orientation="Horizontal">
                             <TextBlock Foreground="{Binding Converter={cvt:ColumnBrushConverter}}"

Qsi.Debugger/MainWindow.axaml.cs

@@ -457,9 +457,16 @@ private void BuildQsiTableTree(IList<QsiTableStructure> tables)
                 items.Add(new QsiSplitTreeItem());
 
             items.AddRange(tables[i].Columns.Select(c => new QsiColumnTreeItem(c)));
+
+            // Indirect columns
+            if (tables[i].IndirectColumns is not { } indirectColumns)
+                continue;
+
+            items.Add(new QsiLabelTreeItem("Indirect Columns"));
+            items.AddRange(indirectColumns.Select(c => new QsiColumnTreeItem(c)));
         }
 
         _tvResult.Items = items;
     }
     #endregion
-}
+}

Qsi.Debugger/Models/QsiLabelTreeItem.cs

@@ -0,0 +1,11 @@
+namespace Qsi.Debugger.Models;
+
+public class QsiLabelTreeItem
+{
+    public string Label { get; }
+
+    public QsiLabelTreeItem(string label)
+    {
+        Label = label;
+    }
+}

Qsi/Analyzers/Table/Context/TableCompileContext.cs

@@ -18,6 +18,8 @@ public sealed class TableCompileContext : AnalyzerContextWrapper, IDisposable
 
     public List<QsiTableStructure> JoinedSouceTables { get; }
 
+    public bool IsIndirectSource { get; set; }
+
     private readonly List<QsiTableStructure> _directives;
     private Stack<QsiQualifiedIdentifier> _identifierScope;
 
@@ -109,4 +111,4 @@ void IDisposable.Dispose()
         _identifierScope?.Clear();
         JoinedSouceTables.Clear();
     }
-}
+}

Qsi/Analyzers/Table/QsiTableAnalyzer.cs

@@ -285,9 +285,34 @@ table.Parent is IQsiDerivedColumnNode &&
             }
         }
 
+        scopedContext.IsIndirectSource = true;
+        declaredTable.IndirectColumns = GetIndirectColumns(scopedContext, table).ToArray() ?? Array.Empty<QsiTableColumn>();
+        scopedContext.IsIndirectSource = false;
+
         return declaredTable;
     }
 
+    private IEnumerable<QsiTableColumn> GetIndirectColumns(TableCompileContext context, IQsiDerivedTableNode table)
+    {
+        // Indirect columns from sources
+        foreach (var t in context.GetAllSourceTables())
+        {
+            if (t.IndirectColumns is not { } indirectColumns)
+                continue;
+
+            foreach (var c in indirectColumns)
+                yield return c;
+        }
+
+        if (table.Where is not { } where)
+            yield break;
+
+        IEnumerable<QsiTableColumn> columns = ResolveColumnsInExpression(context, where.Expression);
+
+        foreach (var c in columns)
+            yield return c;
+    }
+
     protected virtual QsiIdentifier ResolveCompoundColumnName(TableCompileContext context, IQsiDerivedTableNode table, IQsiColumnNode column, QsiTableColumn refColumn)
     {
         return refColumn.Name;
@@ -951,12 +976,20 @@ protected virtual IEnumerable<QsiTableColumn> ResolveColumnsInExpression(TableCo
 
             case IQsiTableExpressionNode e:
             {
+                var isIndirectSource = context.IsIndirectSource;
+
                 using var scopedContext = new TableCompileContext(context);
                 var structure = BuildTableStructure(scopedContext, e.Table).Result;
 
                 foreach (var c in structure.Columns)
                     yield return c;
 
+                if (!isIndirectSource)
+                    break;
+
+                foreach (var c in structure.IndirectColumns)
+                    yield return c;
+
                 break;
             }
 

Qsi/Data/Table/QsiTableStructure.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Linq;
 using Qsi.Shared.Extensions;
 
@@ -18,6 +19,17 @@ public sealed class QsiTableStructure
 
     public IList<QsiTableColumn> Columns => _columns;
 
+    /// <summary>
+    /// 테이블을 직접적으로 구성하는 컬럼이 아닌 간접적으로 참조하는 컬럼을 의미합니다.
+    /// </summary>
+    /// <remarks>
+    /// <ul>
+    /// <li>WHERE문이나 HAVING문의 조건에서 사용하는 컬럼이나, 서브쿼리 내에 들어 있는 컬럼 등을 포함합니다.</li>
+    /// <li>주석 작성일 기준으로 해당 필드의 값은 WHERE절 내부에서 사용하는 컬럼들만 포함하고 있습니다.</li>
+    /// </ul>
+    /// </remarks>
+    public QsiTableColumn[] IndirectColumns = Array.Empty<QsiTableColumn>();
+
     internal IEnumerable<QsiTableColumn> VisibleColumns => _columns.Where(c => c.IsVisible);
 
     private readonly QsiTableColumnCollection _columns;
@@ -46,6 +58,7 @@ public QsiTableStructure Clone()
 
         table.References.AddRange(References);
         table._columns.AddRange(_columns.Select(c => c.CloneInternal()));
+        table.IndirectColumns = (QsiTableColumn[])IndirectColumns.Clone();
 
         return table;
     }
@@ -62,7 +75,8 @@ public QsiTableStructure CloneVisibleOnly()
 
         table.References.AddRange(References);
         table._columns.AddRange(VisibleColumns.Select(c => c.CloneInternal()));
+        table.IndirectColumns = (QsiTableColumn[])IndirectColumns.Clone();
 
         return table;
     }
-}
+}