Fix CSV Export with date and time in excel format

[oberhm]

fixes the issue #1134
If the csv exporter is used, the date and time fields get converted to the excel format.
This leads to problem when opening the csv file not in excel

[sandraros]

Thank you for volunteering in abap2xlsx. I don't have time to look at it before middle of next week, but I feel that it's a little bit dangerous to change in the method set_cell of zcl_excel_worksheet while the issue is in zcl_excel_writer_csv, as it may impact all other classes and client programs. The format must internally remain like 45155 instead of 17.08.2023 (to reuse your example). I'm not sure there is a bug, let me ask you a question in the original issue (#1134).

[oberhm]

Hi.
I agree with you, that these change is very dangerous.

But the variable lv_data_type is set two times in the coding before:

• if ip_data_type is supplied
• if the lv_value_type is a kind of stringlike

The lv_data_type is transferred to the sheet content field data_type

I could not see any big problem, if the field data_type is set correctly every time.
Actually the field data_type is empty in case of all data types except type stringlike.

I will response in the issue with an example.

[sandraros]

LGTM Thank you! 👍