ABAP Select data from SAP table BKKPOMND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BKKPOMND
*  INTO TABLE @DATA(IT_BKKPOMND2).
*--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_BKKPOMND INDEX 1 INTO DATA(WA_BKKPOMND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BKKPOMND>-MANDT = 1.
<BKKPOMND>-PO_MGUID = 1.
<BKKPOMND>-PO_MVERS = 1.
<BKKPOMND>-MNDID = 1.
<BKKPOMND>-SIGN_CITY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BKKPOMND-SIGN_DATE, sy-vline,
  WA_BKKPOMND-PAY_TYPE, sy-vline,
  WA_BKKPOMND-VAL_FROM_DATE, sy-vline,
  WA_BKKPOMND-VAL_TO_DATE, sy-vline,
  WA_BKKPOMND-STATUS, sy-vline,
  WA_BKKPOMND-B2B, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BKKPOMND 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_BKKPOMND 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_BKKPOMND INTO WA_BKKPOMND.


*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 ISOLA, internal->external for field SND_LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_BKKPOMND-SND_LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BKKPOMND-SND_LANGUAGE.
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_BKKPOMND_STR, 
MANDT TYPE STRING,
PO_MGUID TYPE STRING,
PO_MVERS TYPE STRING,
MNDID TYPE STRING,
SIGN_CITY TYPE STRING,
SIGN_DATE TYPE STRING,
PAY_TYPE TYPE STRING,
VAL_FROM_DATE TYPE STRING,
VAL_TO_DATE TYPE STRING,
STATUS TYPE STRING,
B2B TYPE STRING,
REASON_CODE TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
CHG_REASON TYPE STRING,
ORIGIN TYPE STRING,
ORIGIN_REC_CRDID TYPE STRING,
ORIGIN_MNDID TYPE STRING,
GLOCK TYPE STRING,
GLOCK_VAL_FROM TYPE STRING,
GLOCK_VAL_TO TYPE STRING,
ANWND TYPE STRING,
ORI_ERNAM TYPE STRING,
ORI_ERDAT TYPE STRING,
ORI_ERTIM TYPE STRING,
SND_TYPE TYPE STRING,
SND_ID TYPE STRING,
SND_NAME1 TYPE STRING,
SND_NAME2 TYPE STRING,
SND_STREET TYPE STRING,
SND_HOUSENUM TYPE STRING,
SND_POSTAL TYPE STRING,
SND_CITY TYPE STRING,
SND_COUNTRY TYPE STRING,
SND_IBAN TYPE STRING,
SND_BIC TYPE STRING,
SND_DIR_NAME TYPE STRING,
SND_LANGUAGE TYPE STRING,
SND_DIR_ID TYPE STRING,
SND_DEBTOR_ID TYPE STRING,
REC_TYPE TYPE STRING,
REC_ID TYPE STRING,
REC_NAME1 TYPE STRING,
REC_NAME2 TYPE STRING,
REC_CRDID TYPE STRING,
REC_STREET TYPE STRING,
REC_HOUSENUM TYPE STRING,
REC_POSTAL TYPE STRING,
REC_CITY TYPE STRING,
REC_COUNTRY TYPE STRING,
REC_DIR_NAME TYPE STRING,
REC_DIR_ID TYPE STRING,
MAND_TYPE TYPE STRING,
MAND_FREQ TYPE STRING,
CREATE_USR TYPE STRING,
CREATE_DAT TYPE STRING,
CREATE_TIM TYPE STRING,
CHANGE_USR TYPE STRING,
CHANGE_DAT TYPE STRING,
CHANGE_TIM TYPE STRING,
REC_CRDID_OLD TYPE STRING,
REC_NAME1_OLD TYPE STRING,
REC_NAME2_OLD TYPE STRING,
SND_IBAN_OLD TYPE STRING,
SND_BIC_OLD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BKKPOMND_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_BKKPOMND_STR-MANDT sy-vline 
WA_BKKPOMND_STR-PO_MGUID sy-vline 
WA_BKKPOMND_STR-PO_MVERS sy-vline 
WA_BKKPOMND_STR-MNDID sy-vline 
WA_BKKPOMND_STR-SIGN_CITY sy-vline 
WA_BKKPOMND_STR-SIGN_DATE sy-vline 
WA_BKKPOMND_STR-PAY_TYPE sy-vline 
WA_BKKPOMND_STR-VAL_FROM_DATE sy-vline 
WA_BKKPOMND_STR-VAL_TO_DATE sy-vline 
WA_BKKPOMND_STR-STATUS sy-vline 
WA_BKKPOMND_STR-B2B sy-vline 
WA_BKKPOMND_STR-REASON_CODE sy-vline 
WA_BKKPOMND_STR-ERNAM sy-vline 
WA_BKKPOMND_STR-ERDAT sy-vline 
WA_BKKPOMND_STR-ERTIM sy-vline 
WA_BKKPOMND_STR-CHG_REASON sy-vline 
WA_BKKPOMND_STR-ORIGIN sy-vline 
WA_BKKPOMND_STR-ORIGIN_REC_CRDID sy-vline 
WA_BKKPOMND_STR-ORIGIN_MNDID sy-vline 
WA_BKKPOMND_STR-GLOCK sy-vline 
WA_BKKPOMND_STR-GLOCK_VAL_FROM sy-vline 
WA_BKKPOMND_STR-GLOCK_VAL_TO sy-vline 
WA_BKKPOMND_STR-ANWND sy-vline 
WA_BKKPOMND_STR-ORI_ERNAM sy-vline 
WA_BKKPOMND_STR-ORI_ERDAT sy-vline 
WA_BKKPOMND_STR-ORI_ERTIM sy-vline 
WA_BKKPOMND_STR-SND_TYPE sy-vline 
WA_BKKPOMND_STR-SND_ID sy-vline 
WA_BKKPOMND_STR-SND_NAME1 sy-vline 
WA_BKKPOMND_STR-SND_NAME2 sy-vline 
WA_BKKPOMND_STR-SND_STREET sy-vline 
WA_BKKPOMND_STR-SND_HOUSENUM sy-vline 
WA_BKKPOMND_STR-SND_POSTAL sy-vline 
WA_BKKPOMND_STR-SND_CITY sy-vline 
WA_BKKPOMND_STR-SND_COUNTRY sy-vline 
WA_BKKPOMND_STR-SND_IBAN sy-vline 
WA_BKKPOMND_STR-SND_BIC sy-vline 
WA_BKKPOMND_STR-SND_DIR_NAME sy-vline 
WA_BKKPOMND_STR-SND_LANGUAGE sy-vline 
WA_BKKPOMND_STR-SND_DIR_ID sy-vline 
WA_BKKPOMND_STR-SND_DEBTOR_ID sy-vline 
WA_BKKPOMND_STR-REC_TYPE sy-vline 
WA_BKKPOMND_STR-REC_ID sy-vline 
WA_BKKPOMND_STR-REC_NAME1 sy-vline 
WA_BKKPOMND_STR-REC_NAME2 sy-vline 
WA_BKKPOMND_STR-REC_CRDID sy-vline 
WA_BKKPOMND_STR-REC_STREET sy-vline 
WA_BKKPOMND_STR-REC_HOUSENUM sy-vline 
WA_BKKPOMND_STR-REC_POSTAL sy-vline 
WA_BKKPOMND_STR-REC_CITY sy-vline 
WA_BKKPOMND_STR-REC_COUNTRY sy-vline 
WA_BKKPOMND_STR-REC_DIR_NAME sy-vline 
WA_BKKPOMND_STR-REC_DIR_ID sy-vline 
WA_BKKPOMND_STR-MAND_TYPE sy-vline 
WA_BKKPOMND_STR-MAND_FREQ sy-vline 
WA_BKKPOMND_STR-CREATE_USR sy-vline 
WA_BKKPOMND_STR-CREATE_DAT sy-vline 
WA_BKKPOMND_STR-CREATE_TIM sy-vline 
WA_BKKPOMND_STR-CHANGE_USR sy-vline 
WA_BKKPOMND_STR-CHANGE_DAT sy-vline 
WA_BKKPOMND_STR-CHANGE_TIM sy-vline 
WA_BKKPOMND_STR-REC_CRDID_OLD sy-vline 
WA_BKKPOMND_STR-REC_NAME1_OLD sy-vline 
WA_BKKPOMND_STR-REC_NAME2_OLD sy-vline 
WA_BKKPOMND_STR-SND_IBAN_OLD sy-vline 
WA_BKKPOMND_STR-SND_BIC_OLD sy-vline      INTO ld_text SEPARATED BY SPACE.

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