public sealed override void VisitBefore(SubQueryExp expr)
{
if (!expr.IsUsedInResultColumn())
{
++_queryExprNestLevel;
}
else
{
_subQueryStack.Push(SubQueryType.InResults);
}
}
public sealed override void VisitAfter(SubQueryExp expr)
{
if (!expr.IsUsedInResultColumn())
{
--_queryExprNestLevel;
}
else
{
// SELECT句サブクエリの目印をつける
_stack.Peek().IsSubQueryInResults = true;
_subQueryStack.Pop();
}
}
public override void VisitAfter(SubQueryExp expr)
{
if (expr.IsUsedInResultColumn())
{
// SELECT句サブクエリの場合
if (this.IsNotInMainResultsSource())
{
return;
}
_scopeStack.Pop();
}
else
{
--_queryExprNestLevel;
}
}
public override void VisitBefore(SubQueryExp expr)
{
if (expr.IsUsedInResultColumn())
{
// SELECT句サブクエリの場合
if (this.IsNotInMainResultsSource())
{
return;
}
_scopeStack.Push(new Scope(FromOrResult.ResultQuery, false));
}
else
{
++_queryExprNestLevel;
}
}