ABAP Select data from SAP table RDGEXCCNTRIESAPI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RDGEXCCNTRIESAPI table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to RDGEXCCNTRIESAPI. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the RDGEXCCNTRIESAPI table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_RDGEXCCNTRIESAPI TYPE STANDARD TABLE OF RDGEXCCNTRIESAPI,
      WA_RDGEXCCNTRIESAPI TYPE RDGEXCCNTRIESAPI,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <RDGEXCCNTRIESAPI> TYPE RDGEXCCNTRIESAPI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RDGEXCCNTRIESAPI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RDGEXCCNTRIESAPI
  INTO TABLE IT_RDGEXCCNTRIESAPI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDGEXCCNTRIESAPI
*  INTO TABLE @DATA(IT_RDGEXCCNTRIESAPI2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_RDGEXCCNTRIESAPI INDEX 1 INTO DATA(WA_RDGEXCCNTRIESAPI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RDGEXCCNTRIESAPI ASSIGNING <RDGEXCCNTRIESAPI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDGEXCCNTRIESAPI>-MANDT = 1.
<RDGEXCCNTRIESAPI>-LWDG = 1.
<RDGEXCCNTRIESAPI>-EXCEPTID = 1.
<RDGEXCCNTRIESAPI>-VERSION = 1.
<RDGEXCCNTRIESAPI>-EXCEPT_CNTRY = 1.

ENDLOOP.

LOOP AT IT_RDGEXCCNTRIESAPI INTO WA_RDGEXCCNTRIESAPI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDGEXCCNTRIESAPI-CRDAT, sy-vline,
  WA_RDGEXCCNTRIESAPI-CRNAM, sy-vline,
  WA_RDGEXCCNTRIESAPI-UPDDAT, sy-vline,
  WA_RDGEXCCNTRIESAPI-UPDNAM, sy-vline,
  WA_RDGEXCCNTRIESAPI-EXC_CNTRY_VALFR, sy-vline,
  WA_RDGEXCCNTRIESAPI-EXC_CNTRY_VALTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDGEXCCNTRIESAPI you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_RDGEXCCNTRIESAPI TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_RDGEXCCNTRIESAPI INTO WA_RDGEXCCNTRIESAPI.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RDGEXCCNTRIESAPI_STR, 
MANDT TYPE STRING,
LWDG TYPE STRING,
EXCEPTID TYPE STRING,
VERSION TYPE STRING,
EXCEPT_CNTRY TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
EXC_CNTRY_VALFR TYPE STRING,
EXC_CNTRY_VALTO TYPE STRING,
EXC_PRINT_SUPPRF TYPE STRING,
ERRORMODE TYPE STRING,
ERRORINFO TYPE STRING,
ERRORCLASS TYPE STRING,
ERRORPARAM TYPE STRING,
LOGLOCKMOD TYPE STRING,
EXTINFO TYPE STRING,
LINEMOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDGEXCCNTRIESAPI_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_RDGEXCCNTRIESAPI_STR-MANDT sy-vline 
WA_RDGEXCCNTRIESAPI_STR-LWDG sy-vline 
WA_RDGEXCCNTRIESAPI_STR-EXCEPTID sy-vline 
WA_RDGEXCCNTRIESAPI_STR-VERSION sy-vline 
WA_RDGEXCCNTRIESAPI_STR-EXCEPT_CNTRY sy-vline 
WA_RDGEXCCNTRIESAPI_STR-CRDAT sy-vline 
WA_RDGEXCCNTRIESAPI_STR-CRNAM sy-vline 
WA_RDGEXCCNTRIESAPI_STR-UPDDAT sy-vline 
WA_RDGEXCCNTRIESAPI_STR-UPDNAM sy-vline 
WA_RDGEXCCNTRIESAPI_STR-EXC_CNTRY_VALFR sy-vline 
WA_RDGEXCCNTRIESAPI_STR-EXC_CNTRY_VALTO sy-vline 
WA_RDGEXCCNTRIESAPI_STR-EXC_PRINT_SUPPRF sy-vline 
WA_RDGEXCCNTRIESAPI_STR-ERRORMODE sy-vline 
WA_RDGEXCCNTRIESAPI_STR-ERRORINFO sy-vline 
WA_RDGEXCCNTRIESAPI_STR-ERRORCLASS sy-vline 
WA_RDGEXCCNTRIESAPI_STR-ERRORPARAM sy-vline 
WA_RDGEXCCNTRIESAPI_STR-LOGLOCKMOD sy-vline 
WA_RDGEXCCNTRIESAPI_STR-EXTINFO sy-vline 
WA_RDGEXCCNTRIESAPI_STR-LINEMOD sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.