Only use the current analysis steps for CRUD statements

sqlparser/lib/src/ast/statements/create_table.dart

@@ -2,7 +2,7 @@ part of '../ast.dart';
 
 /// A "CREATE TABLE" statement, see https://www.sqlite.org/lang_createtable.html
 /// for the individual components.
-class CreateTableStatement extends Statement {
+class CreateTableStatement extends Statement with SchemaStatement {
   final bool ifNotExists;
   final String tableName;
   final List<ColumnDefinition> columns;

sqlparser/lib/src/ast/statements/delete.dart

@@ -1,6 +1,6 @@
 part of '../ast.dart';
 
-class DeleteStatement extends Statement {
+class DeleteStatement extends Statement with CrudStatement {
   final TableReference from;
   final Expression where;
 

sqlparser/lib/src/ast/statements/select.dart

@@ -1,6 +1,6 @@
 part of '../ast.dart';
 
-class SelectStatement extends Statement with ResultSet {
+class SelectStatement extends Statement with CrudStatement, ResultSet {
   final bool distinct;
   final List<ResultColumn> columns;
   final List<Queryable> from;

sqlparser/lib/src/ast/statements/statement.dart

@@ -1,3 +1,9 @@
 part of '../ast.dart';
 
 abstract class Statement extends AstNode {}
+
+/// Marker mixin for statements that read from an existing table structure.
+mixin CrudStatement on Statement {}
+
+/// Marker mixin for statements that change the table structure.
+mixin SchemaStatement on Statement {}

sqlparser/lib/src/ast/statements/update.dart

@@ -16,7 +16,7 @@ const Map<TokenType, FailureMode> _tokensToMode = {
   TokenType.ignore: FailureMode.ignore,
 };
 
-class UpdateStatement extends Statement {
+class UpdateStatement extends Statement with CrudStatement {
   final FailureMode or;
   final TableReference table;
   final List<SetComponent> set;

sqlparser/lib/src/engine/sql_engine.dart

@@ -57,10 +57,13 @@ class SqlEngine {
 
     try {
       ReferenceFinder(globalScope: scope).start(node);
-      node
-        ..accept(ColumnResolver(context))
-        ..accept(ReferenceResolver(context))
-        ..accept(TypeResolvingVisitor(context));
+
+      if (node is CrudStatement) {
+        node
+          ..accept(ColumnResolver(context))
+          ..accept(ReferenceResolver(context))
+          ..accept(TypeResolvingVisitor(context));
+      }
     } catch (e) {
       // todo should we do now? AFAIK, everything that causes an exception
       // is added as an error contained in the context.