ABAP Select data from SAP table MCWBRKL into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MCWBRKL 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 MCWBRKL. 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 MCWBRKL 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_MCWBRKL TYPE STANDARD TABLE OF MCWBRKL,
      WA_MCWBRKL TYPE MCWBRKL,
      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: <MCWBRKL> TYPE MCWBRKL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MCWBRKL
*  INTO TABLE @DATA(IT_MCWBRKL2).
*--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_MCWBRKL INDEX 1 INTO DATA(WA_MCWBRKL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MCWBRKL>-WBELN = 1.
<MCWBRKL>-POSNR = 1.
<MCWBRKL>-WBELNL = 1.
<MCWBRKL>-LFART = 1.
<MCWBRKL>-WRART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MCWBRKL-WFDAT, sy-vline,
  WA_MCWBRKL-ERDAT, sy-vline,
  WA_MCWBRKL-ZTERM, sy-vline,
  WA_MCWBRKL-ZTERMD, sy-vline,
  WA_MCWBRKL-ZBD1T, sy-vline,
  WA_MCWBRKL-ZBD1P, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MCWBRKL 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_MCWBRKL 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_MCWBRKL INTO WA_MCWBRKL.


*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 WBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCWBRKL-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCWBRKL-WBELN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit EXCRT, internal->external for field WKURS_P1
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_MCWBRKL-WKURS_P1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCWBRKL-WKURS_P1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field WKURS_P2
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_MCWBRKL-WKURS_P2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCWBRKL-WKURS_P2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field WKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_MCWBRKL-WKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCWBRKL-WKURS.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field LFAKS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCWBRKL-LFAKS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCWBRKL-LFAKS.
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_MCWBRKL_STR, 
WBELN TYPE STRING,
POSNR TYPE STRING,
WBELNL TYPE STRING,
LFART TYPE STRING,
WRART TYPE STRING,
WFDAT TYPE STRING,
ERDAT TYPE STRING,
ZTERM TYPE STRING,
ZTERMD TYPE STRING,
ZBD1T TYPE STRING,
ZBD1P TYPE STRING,
ZBD2T TYPE STRING,
ZBD2P TYPE STRING,
ZBD3T TYPE STRING,
ZLSCH TYPE STRING,
ZBD1TD TYPE STRING,
ZBD1PD TYPE STRING,
ZBD2TD TYPE STRING,
ZBD2PD TYPE STRING,
ZBD3TD TYPE STRING,
ZLSCHD TYPE STRING,
VALDT TYPE STRING,
VALTG TYPE STRING,
VALTGD TYPE STRING,
VALDTD TYPE STRING,
WKURS_P1 TYPE STRING,
WKURS_P2 TYPE STRING,
WPYCUR_P1 TYPE STRING,
WPYCUR_P2 TYPE STRING,
WKURS_DAT TYPE STRING,
WKURS TYPE STRING,
WAERL TYPE STRING,
KUNRE TYPE STRING,
KUNRG TYPE STRING,
XBLNR TYPE STRING,
KIDNO TYPE STRING,
ZUONR TYPE STRING,
RFBSK TYPE STRING,
ABART TYPE STRING,
LIFRE TYPE STRING,
LNRZB TYPE STRING,
LFGRU TYPE STRING,
WDTYP TYPE STRING,
ESTATUS TYPE STRING,
FKSTO_PART TYPE STRING,
FKSTO_PARTY TYPE STRING,
POST_PARTY TYPE STRING,
LFAKS TYPE STRING,
FKSTO TYPE STRING,
UPDKZ TYPE STRING,
LANDTX TYPE STRING,
LAND1TX TYPE STRING,
LANDTX_BUKRS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MCWBRKL_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_MCWBRKL_STR-WBELN sy-vline 
WA_MCWBRKL_STR-POSNR sy-vline 
WA_MCWBRKL_STR-WBELNL sy-vline 
WA_MCWBRKL_STR-LFART sy-vline 
WA_MCWBRKL_STR-WRART sy-vline 
WA_MCWBRKL_STR-WFDAT sy-vline 
WA_MCWBRKL_STR-ERDAT sy-vline 
WA_MCWBRKL_STR-ZTERM sy-vline 
WA_MCWBRKL_STR-ZTERMD sy-vline 
WA_MCWBRKL_STR-ZBD1T sy-vline 
WA_MCWBRKL_STR-ZBD1P sy-vline 
WA_MCWBRKL_STR-ZBD2T sy-vline 
WA_MCWBRKL_STR-ZBD2P sy-vline 
WA_MCWBRKL_STR-ZBD3T sy-vline 
WA_MCWBRKL_STR-ZLSCH sy-vline 
WA_MCWBRKL_STR-ZBD1TD sy-vline 
WA_MCWBRKL_STR-ZBD1PD sy-vline 
WA_MCWBRKL_STR-ZBD2TD sy-vline 
WA_MCWBRKL_STR-ZBD2PD sy-vline 
WA_MCWBRKL_STR-ZBD3TD sy-vline 
WA_MCWBRKL_STR-ZLSCHD sy-vline 
WA_MCWBRKL_STR-VALDT sy-vline 
WA_MCWBRKL_STR-VALTG sy-vline 
WA_MCWBRKL_STR-VALTGD sy-vline 
WA_MCWBRKL_STR-VALDTD sy-vline 
WA_MCWBRKL_STR-WKURS_P1 sy-vline 
WA_MCWBRKL_STR-WKURS_P2 sy-vline 
WA_MCWBRKL_STR-WPYCUR_P1 sy-vline 
WA_MCWBRKL_STR-WPYCUR_P2 sy-vline 
WA_MCWBRKL_STR-WKURS_DAT sy-vline 
WA_MCWBRKL_STR-WKURS sy-vline 
WA_MCWBRKL_STR-WAERL sy-vline 
WA_MCWBRKL_STR-KUNRE sy-vline 
WA_MCWBRKL_STR-KUNRG sy-vline 
WA_MCWBRKL_STR-XBLNR sy-vline 
WA_MCWBRKL_STR-KIDNO sy-vline 
WA_MCWBRKL_STR-ZUONR sy-vline 
WA_MCWBRKL_STR-RFBSK sy-vline 
WA_MCWBRKL_STR-ABART sy-vline 
WA_MCWBRKL_STR-LIFRE sy-vline 
WA_MCWBRKL_STR-LNRZB sy-vline 
WA_MCWBRKL_STR-LFGRU sy-vline 
WA_MCWBRKL_STR-WDTYP sy-vline 
WA_MCWBRKL_STR-ESTATUS sy-vline 
WA_MCWBRKL_STR-FKSTO_PART sy-vline 
WA_MCWBRKL_STR-FKSTO_PARTY sy-vline 
WA_MCWBRKL_STR-POST_PARTY sy-vline 
WA_MCWBRKL_STR-LFAKS sy-vline 
WA_MCWBRKL_STR-FKSTO sy-vline 
WA_MCWBRKL_STR-UPDKZ sy-vline 
WA_MCWBRKL_STR-LANDTX sy-vline 
WA_MCWBRKL_STR-LAND1TX sy-vline 
WA_MCWBRKL_STR-LANDTX_BUKRS sy-vline      INTO ld_text SEPARATED BY SPACE.

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