add FT::date_only, FT::time_only and FT::no_time_zone flags

src/baseexpression.cpp

@@ -602,7 +602,26 @@ void BaseExpression::esc(long double val, pt::TextStream & stream, const FT & fi
 
 void BaseExpression::esc(const pt::Date & date, pt::TextStream & stream, const FT & field_type)
 {
-	stream << date;
+	if( field_type.is_date_only() )
+	{
+		date.SerializeYearMonthDay(stream, false);
+	}
+	else
+	if( field_type.is_time_only() )
+	{
+		date.SerializeHourMinSec(stream);
+	}
+	else
+	{
+		if( field_type.is_no_time_zone() )
+		{
+			date.Serialize(stream);
+		}
+		else
+		{
+			date.SerializeISO(stream);
+		}
+	}
 }