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SQLLinter/Infrastructure/Rules/SchemaQualifyRule.cs

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+using Microsoft.SqlServer.TransactSql.ScriptDom;
+using SQLLinter.Common;
+using SQLLinter.Common.Helpers;
+
+namespace SQLLinter.Infrastructure.Rules;
+
+public class SchemaQualifyRule : BaseRuleVisitor, IRule
+{
+    private readonly List<string> tableAliases = new()
+    {
+        "INSERTED",
+        "UPDATED",
+        "DELETED"
+    };
+
+    public override string Text => "Имя объекта без схемы: {0}";
+
+    public override void Visit(TSqlStatement node)
+    {
+        var childAliasVisitor = new ChildAliasVisitor();
+        node.AcceptChildren(childAliasVisitor);
+        tableAliases.AddRange(childAliasVisitor.TableAliases);
+    }
+
+    public override void Visit(NamedTableReference node) => VisitTableName(node.SchemaObject, true);
+
+    public override void Visit(CreateTableStatement node) => VisitTableName(node.SchemaObjectName, false);
+
+    public override void Visit(AlterTableStatement node) => VisitTableName(node.SchemaObjectName, false);
+
+    public override void Visit(TruncateTableStatement node) => VisitTableName(node.TableName, false);
+
+    public override void Visit(DropTableStatement node)
+    {
+        foreach (var schemaObjectName in node.Objects)
+        {
+            VisitTableName(schemaObjectName, false);
+        }
+    }
+
+    private void VisitTableName(SchemaObjectName node, bool canHaveTableAliases)
+    {
+        if (node.SchemaIdentifier != null)
+        {
+            return;
+        }
+
+        // не проверять схему во временных таблицах
+        if (node.BaseIdentifier.Value.Contains('#'))
+        {
+            return;
+        }
+
+        // не проверять схему псевдонимов таблиц
+        if (canHaveTableAliases && tableAliases.Exists(x => x.Equals(node.BaseIdentifier.Value, StringComparison.OrdinalIgnoreCase)))
+        {
+            return;
+        }
+
+        AddViolation(node, SQLHelpers.ObjectGetFullName(node));
+    }
+
+    public class ChildAliasVisitor : TSqlFragmentVisitor
+    {
+        public List<string> TableAliases { get; } = new();
+
+        public override void Visit(TableReferenceWithAlias node)
+        {
+            if (node.Alias != null)
+            {
+                TableAliases.Add(node.Alias.Value);
+            }
+        }
+
+        public override void Visit(CommonTableExpression node)
+        {
+            TableAliases.Add(node.ExpressionName.Value);
+        }
+    }
+}