ABAP Select data from SAP table WB2MEPOACCOUNTINGX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WB2MEPOACCOUNTINGX 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 WB2MEPOACCOUNTINGX. 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 WB2MEPOACCOUNTINGX 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_WB2MEPOACCOUNTINGX TYPE STANDARD TABLE OF WB2MEPOACCOUNTINGX,
      WA_WB2MEPOACCOUNTINGX TYPE WB2MEPOACCOUNTINGX,
      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: <WB2MEPOACCOUNTINGX> TYPE WB2MEPOACCOUNTINGX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WB2MEPOACCOUNTINGX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WB2MEPOACCOUNTINGX
  INTO TABLE IT_WB2MEPOACCOUNTINGX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WB2MEPOACCOUNTINGX
*  INTO TABLE @DATA(IT_WB2MEPOACCOUNTINGX2).
*--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_WB2MEPOACCOUNTINGX INDEX 1 INTO DATA(WA_WB2MEPOACCOUNTINGX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WB2MEPOACCOUNTINGX ASSIGNING <WB2MEPOACCOUNTINGX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WB2MEPOACCOUNTINGX>-WBELN = 1.
<WB2MEPOACCOUNTINGX>-EBELP_KEY = 1.
<WB2MEPOACCOUNTINGX>-ZEKKN_KEY = 1.
<WB2MEPOACCOUNTINGX>-ACCOUNTING_ID = 1.
<WB2MEPOACCOUNTINGX>-ZEXKN = 1.

ENDLOOP.

LOOP AT IT_WB2MEPOACCOUNTINGX INTO WA_WB2MEPOACCOUNTINGX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WB2MEPOACCOUNTINGX-LOEKZ, sy-vline,
  WA_WB2MEPOACCOUNTINGX-AEDAT, sy-vline,
  WA_WB2MEPOACCOUNTINGX-MENGE, sy-vline,
  WA_WB2MEPOACCOUNTINGX-VPROZ, sy-vline,
  WA_WB2MEPOACCOUNTINGX-NETWR, sy-vline,
  WA_WB2MEPOACCOUNTINGX-SAKTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WB2MEPOACCOUNTINGX 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_WB2MEPOACCOUNTINGX 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_WB2MEPOACCOUNTINGX INTO WA_WB2MEPOACCOUNTINGX.


*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_WB2MEPOACCOUNTINGX-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WB2MEPOACCOUNTINGX-WBELN.
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_WB2MEPOACCOUNTINGX_STR, 
WBELN TYPE STRING,
EBELP_KEY TYPE STRING,
ZEKKN_KEY TYPE STRING,
ACCOUNTING_ID TYPE STRING,
ZEXKN TYPE STRING,
LOEKZ TYPE STRING,
AEDAT TYPE STRING,
MENGE TYPE STRING,
VPROZ TYPE STRING,
NETWR TYPE STRING,
SAKTO TYPE STRING,
GSBER TYPE STRING,
KOSTL TYPE STRING,
VBELN TYPE STRING,
VBELP TYPE STRING,
VETEN TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
AUFNR TYPE STRING,
WEMPF TYPE STRING,
ABLAD TYPE STRING,
KOKRS TYPE STRING,
KSTRG TYPE STRING,
PAOBJNR TYPE STRING,
PRCTR TYPE STRING,
PS_PSP_PNR TYPE STRING,
NPLNR TYPE STRING,
AUFPL TYPE STRING,
IMKEY TYPE STRING,
APLZL TYPE STRING,
VPTNR TYPE STRING,
FIPOS TYPE STRING,
RECID TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
GRANT_NBR TYPE STRING,
FKBER TYPE STRING,
DABRZ TYPE STRING,
AUFPL_ORD TYPE STRING,
APLZL_ORD TYPE STRING,
MWSKZ TYPE STRING,
TXJCD TYPE STRING,
NAVNW TYPE STRING,
LSTAR TYPE STRING,
PRZNR TYPE STRING,
EXTWBSELEMENT TYPE STRING,
SERVICE_DOC_TYPE TYPE STRING,
SERVICE_DOC_ID TYPE STRING,
SERVICE_DOC_ITEM_ID TYPE STRING,
KBLNR TYPE STRING,
KBLPOS TYPE STRING,
VORNR TYPE STRING,
DUMMY TYPE STRING,
BUDGET_PD TYPE STRING,
AA_FINAL_IND TYPE STRING,
AA_FINAL_REASON TYPE STRING,
FMFGUS_KEY TYPE STRING,
KBLNR_CAB TYPE STRING,
KBLPOS_CAB TYPE STRING,
FM_SPLIT_BATCH TYPE STRING,
FM_SPLIT_BEGRU TYPE STRING,
ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WB2MEPOACCOUNTINGX_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_WB2MEPOACCOUNTINGX_STR-WBELN sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-EBELP_KEY sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-ZEKKN_KEY sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-ACCOUNTING_ID sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-ZEXKN sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-LOEKZ sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-AEDAT sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-MENGE sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-VPROZ sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-NETWR sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-SAKTO sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-GSBER sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-KOSTL sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-VBELN sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-VBELP sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-VETEN sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-ANLN1 sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-ANLN2 sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-AUFNR sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-WEMPF sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-ABLAD sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-KOKRS sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-KSTRG sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-PAOBJNR sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-PRCTR sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-PS_PSP_PNR sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-NPLNR sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-AUFPL sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-IMKEY sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-APLZL sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-VPTNR sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-FIPOS sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-RECID sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-FISTL sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-GEBER sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-GRANT_NBR sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-FKBER sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-DABRZ sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-AUFPL_ORD sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-APLZL_ORD sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-MWSKZ sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-TXJCD sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-NAVNW sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-LSTAR sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-PRZNR sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-EXTWBSELEMENT sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-SERVICE_DOC_TYPE sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-SERVICE_DOC_ID sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-SERVICE_DOC_ITEM_ID sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-KBLNR sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-KBLPOS sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-VORNR sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-DUMMY sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-BUDGET_PD sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-AA_FINAL_IND sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-AA_FINAL_REASON sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-FMFGUS_KEY sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-KBLNR_CAB sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-KBLPOS_CAB sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-FM_SPLIT_BATCH sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-FM_SPLIT_BEGRU sy-vline 
WA_WB2MEPOACCOUNTINGX_STR-ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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