protected virtual Expression VisitIsNull(IsNullExpression isnull) { Expression expr = this.Visit(isnull.Expression); if (expr != isnull.Expression) { return(new IsNullExpression(expr)); } return(isnull); }
protected override Expression VisitIsNull(IsNullExpression isnull) { this.Visit(isnull.Expression); sb.Append(" IS NULL"); return(isnull); }