ABAP Select data from SAP table RNWCH_BOA_WORKLIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNWCH_BOA_WORKLIST
*  INTO TABLE @DATA(IT_RNWCH_BOA_WORKLIST2).
*--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_RNWCH_BOA_WORKLIST INDEX 1 INTO DATA(WA_RNWCH_BOA_WORKLIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNWCH_BOA_WORKLIST>-MANDT = 1.
<RNWCH_BOA_WORKLIST>-LFINQ = 1.
<RNWCH_BOA_WORKLIST>-LFPKT = 1.
<RNWCH_BOA_WORKLIST>-EINRI = 1.
<RNWCH_BOA_WORKLIST>-RQ_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNWCH_BOA_WORKLIST-RQ_TIME, sy-vline,
  WA_RNWCH_BOA_WORKLIST-SELKZ, sy-vline,
  WA_RNWCH_BOA_WORKLIST-INQ_DATE, sy-vline,
  WA_RNWCH_BOA_WORKLIST-LDATE, sy-vline,
  WA_RNWCH_BOA_WORKLIST-RQ_CONTEXT, sy-vline,
  WA_RNWCH_BOA_WORKLIST-TEST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNWCH_BOA_WORKLIST 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_RNWCH_BOA_WORKLIST 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_RNWCH_BOA_WORKLIST INTO WA_RNWCH_BOA_WORKLIST.


*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 ALPHA, internal->external for field LFINQ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNWCH_BOA_WORKLIST-LFINQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNWCH_BOA_WORKLIST-LFINQ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LFPKT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNWCH_BOA_WORKLIST-LFPKT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNWCH_BOA_WORKLIST-LFPKT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNWCH_BOA_WORKLIST-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNWCH_BOA_WORKLIST-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SELKZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNWCH_BOA_WORKLIST-SELKZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNWCH_BOA_WORKLIST-SELKZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PATNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNWCH_BOA_WORKLIST-PATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNWCH_BOA_WORKLIST-PATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNWCH_BOA_WORKLIST-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNWCH_BOA_WORKLIST-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNWCH_BOA_WORKLIST-KOSTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNWCH_BOA_WORKLIST-KOSTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LF301
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNWCH_BOA_WORKLIST-LF301
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNWCH_BOA_WORKLIST-LF301.
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_RNWCH_BOA_WORKLIST_STR, 
MANDT TYPE STRING,
LFINQ TYPE STRING,
LFPKT TYPE STRING,
EINRI TYPE STRING,
RQ_DATE TYPE STRING,
RQ_TIME TYPE STRING,
SELKZ TYPE STRING,
INQ_DATE TYPE STRING,
LDATE TYPE STRING,
RQ_CONTEXT TYPE STRING,
TEST TYPE STRING,
PATNR TYPE STRING,
FALNR TYPE STRING,
LFDNR TYPE STRING,
KOSTR TYPE STRING,
CARDNR TYPE STRING,
LNCRD TYPE STRING,
LNCRD_DET TYPE STRING,
SESTA TYPE STRING,
ELCA TYPE STRING,
RS_DATE TYPE STRING,
RS_TIME TYPE STRING,
RS_CONTEXT TYPE STRING,
RETURN_CODE TYPE STRING,
RETURN_MESSAGE TYPE STRING,
STATE TYPE STRING,
COVINT TYPE STRING,
LF301 TYPE STRING,
PROCESSED TYPE STRING,
USER_FIELD TYPE STRING,
UPDAT TYPE STRING,
UPTIM TYPE STRING,
UPUSR TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGTY TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
MARK TYPE STRING,
ICON_UCOMM_RC TYPE STRING,
ICON_PROCESSED TYPE STRING,
ICON_STATE TYPE STRING,
ICON_COVINT TYPE STRING,
ICON_FSPER TYPE STRING,
TEXT_SESTA TYPE STRING,
TEXT_ELCA TYPE STRING,
TEXT_KOSTR TYPE STRING,
PNAME TYPE STRING,
GBDAT TYPE STRING,
PZIFF TYPE STRING,
FALAR TYPE STRING,
ENDDT TYPE STRING,
FSPER TYPE STRING,
FZIFF TYPE STRING,
STYLE TYPE STRING,
COLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNWCH_BOA_WORKLIST_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_RNWCH_BOA_WORKLIST_STR-MANDT sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-LFINQ sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-LFPKT sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-EINRI sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-RQ_DATE sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-RQ_TIME sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-SELKZ sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-INQ_DATE sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-LDATE sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-RQ_CONTEXT sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-TEST sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-PATNR sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-FALNR sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-LFDNR sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-KOSTR sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-CARDNR sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-LNCRD sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-LNCRD_DET sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-SESTA sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-ELCA sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-RS_DATE sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-RS_TIME sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-RS_CONTEXT sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-RETURN_CODE sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-RETURN_MESSAGE sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-STATE sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-COVINT sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-LF301 sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-PROCESSED sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-USER_FIELD sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-UPDAT sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-UPTIM sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-UPUSR sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-MSGID sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-MSGNO sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-MSGTY sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-MSGV1 sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-MSGV2 sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-MSGV3 sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-MSGV4 sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-MARK sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-ICON_UCOMM_RC sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-ICON_PROCESSED sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-ICON_STATE sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-ICON_COVINT sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-ICON_FSPER sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-TEXT_SESTA sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-TEXT_ELCA sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-TEXT_KOSTR sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-PNAME sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-GBDAT sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-PZIFF sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-FALAR sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-ENDDT sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-FSPER sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-FZIFF sy-vline 
WA_RNWCH_BOA_WORKLIST_STR-STYLE sy-vline 
WA_RNWCH_BOA_WORKLIST_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.