ABAP Select data from SAP table RECA_RG_WORKLIST_L 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_WORKLIST_L 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_WORKLIST_L. 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_WORKLIST_L 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_WORKLIST_L TYPE STANDARD TABLE OF RECA_RG_WORKLIST_L,
      WA_RECA_RG_WORKLIST_L TYPE RECA_RG_WORKLIST_L,
      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_WORKLIST_L> TYPE RECA_RG_WORKLIST_L.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECA_RG_WORKLIST_L
*  INTO TABLE @DATA(IT_RECA_RG_WORKLIST_L2).
*--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_WORKLIST_L INDEX 1 INTO DATA(WA_RECA_RG_WORKLIST_L2).


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

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

ENDLOOP.

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

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


*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_WORKLIST_L-RGVALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECA_RG_WORKLIST_L-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_WORKLIST_L_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,
RGRECEIVEROBJTYPE TYPE STRING,
RGRECEIVERXOBJTYPE TYPE STRING,
RGRECEIVERXOBJID TYPE STRING,
RGREASONPOSITION TYPE STRING,
XRGREASON TYPE STRING,
RGSTATEPOSITION TYPE STRING,
RGUPDATEALLOWED TYPE STRING,
RGACCEPTONLY TYPE STRING,
RGWLVISIBLE TYPE STRING,
RGWLSUMMARIZE TYPE STRING,
XRGSTATE TYPE STRING,
XRGSTATEUPDATE TYPE STRING,
RGDONE TYPE STRING,
RGSENDERIDENT TYPE STRING,
RGSENDERTEXT TYPE STRING,
RGRECEIVERIDENT TYPE STRING,
RGRECEIVERTEXT TYPE STRING,
RESPGROUP TYPE STRING,
COLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECA_RG_WORKLIST_L_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_WORKLIST_L_STR-MANDT sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGGUID sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGSENDEROBJNR sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGRECEIVEROBJNR sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGREASON sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGSTATE sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGVALIDFROM sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGVALIDTO sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGINTREF sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGINFO sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RESPONSIBLE sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGPRIORITY sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RERF sy-vline 
WA_RECA_RG_WORKLIST_L_STR-DERF sy-vline 
WA_RECA_RG_WORKLIST_L_STR-TERF sy-vline 
WA_RECA_RG_WORKLIST_L_STR-REHER sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RBEAR sy-vline 
WA_RECA_RG_WORKLIST_L_STR-DBEAR sy-vline 
WA_RECA_RG_WORKLIST_L_STR-TBEAR sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RBHER sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGRECEIVEROBJTYPE sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGRECEIVERXOBJTYPE sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGRECEIVERXOBJID sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGREASONPOSITION sy-vline 
WA_RECA_RG_WORKLIST_L_STR-XRGREASON sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGSTATEPOSITION sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGUPDATEALLOWED sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGACCEPTONLY sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGWLVISIBLE sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGWLSUMMARIZE sy-vline 
WA_RECA_RG_WORKLIST_L_STR-XRGSTATE sy-vline 
WA_RECA_RG_WORKLIST_L_STR-XRGSTATEUPDATE sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGDONE sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGSENDERIDENT sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGSENDERTEXT sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGRECEIVERIDENT sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RGRECEIVERTEXT sy-vline 
WA_RECA_RG_WORKLIST_L_STR-RESPGROUP sy-vline 
WA_RECA_RG_WORKLIST_L_STR-COLOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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