ABAP Select data from SAP table RECA_RG_SENDER_WL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RECA_RG_SENDER_WL 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 RECA_RG_SENDER_WL. 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 RECA_RG_SENDER_WL 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_RECA_RG_SENDER_WL TYPE STANDARD TABLE OF RECA_RG_SENDER_WL,
      WA_RECA_RG_SENDER_WL TYPE RECA_RG_SENDER_WL,
      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: <RECA_RG_SENDER_WL> TYPE RECA_RG_SENDER_WL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECA_RG_SENDER_WL
*  INTO TABLE @DATA(IT_RECA_RG_SENDER_WL2).
*--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_RECA_RG_SENDER_WL INDEX 1 INTO DATA(WA_RECA_RG_SENDER_WL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECA_RG_SENDER_WL>-MANDT = 1.
<RECA_RG_SENDER_WL>-RGGUID = 1.
<RECA_RG_SENDER_WL>-RGSENDEROBJNR = 1.
<RECA_RG_SENDER_WL>-RGRECEIVEROBJNR = 1.
<RECA_RG_SENDER_WL>-RGREASON = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECA_RG_SENDER_WL-RGSTATE, sy-vline,
  WA_RECA_RG_SENDER_WL-RGVALIDFROM, sy-vline,
  WA_RECA_RG_SENDER_WL-RGVALIDTO, sy-vline,
  WA_RECA_RG_SENDER_WL-RGINTREF, sy-vline,
  WA_RECA_RG_SENDER_WL-RGINFO, sy-vline,
  WA_RECA_RG_SENDER_WL-RESPONSIBLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECA_RG_SENDER_WL 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_RECA_RG_SENDER_WL 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_RECA_RG_SENDER_WL INTO WA_RECA_RG_SENDER_WL.


*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.

*Conversion exit REDAT, internal->external for field RGVALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RECA_RG_SENDER_WL-RGVALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECA_RG_SENDER_WL-RGVALIDTO.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_RECA_RG_SENDER_WL_STR, 
MANDT TYPE STRING,
RGGUID TYPE STRING,
RGSENDEROBJNR TYPE STRING,
RGRECEIVEROBJNR TYPE STRING,
RGREASON TYPE STRING,
RGSTATE TYPE STRING,
RGVALIDFROM TYPE STRING,
RGVALIDTO TYPE STRING,
RGINTREF TYPE STRING,
RGINFO TYPE STRING,
RESPONSIBLE TYPE STRING,
RGPRIORITY TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
RGSTATEPOSITION TYPE STRING,
RGUPDATEALLOWED TYPE STRING,
RGWLSUMMARIZE TYPE STRING,
XRGSTATEUPDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECA_RG_SENDER_WL_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_RECA_RG_SENDER_WL_STR-MANDT sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGGUID sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGSENDEROBJNR sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGRECEIVEROBJNR sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGREASON sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGSTATE sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGVALIDFROM sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGVALIDTO sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGINTREF sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGINFO sy-vline 
WA_RECA_RG_SENDER_WL_STR-RESPONSIBLE sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGPRIORITY sy-vline 
WA_RECA_RG_SENDER_WL_STR-RERF sy-vline 
WA_RECA_RG_SENDER_WL_STR-DERF sy-vline 
WA_RECA_RG_SENDER_WL_STR-TERF sy-vline 
WA_RECA_RG_SENDER_WL_STR-REHER sy-vline 
WA_RECA_RG_SENDER_WL_STR-RBEAR sy-vline 
WA_RECA_RG_SENDER_WL_STR-DBEAR sy-vline 
WA_RECA_RG_SENDER_WL_STR-TBEAR sy-vline 
WA_RECA_RG_SENDER_WL_STR-RBHER sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGSTATEPOSITION sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGUPDATEALLOWED sy-vline 
WA_RECA_RG_SENDER_WL_STR-RGWLSUMMARIZE sy-vline 
WA_RECA_RG_SENDER_WL_STR-XRGSTATEUPDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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