ABAP Select data from SAP table KEKPO 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 KEKPO 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 KEKPO. 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 KEKPO 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_KEKPO TYPE STANDARD TABLE OF KEKPO,
      WA_KEKPO TYPE KEKPO,
      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: <KEKPO> TYPE KEKPO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KEKPO
*  INTO TABLE @DATA(IT_KEKPO2).
*--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_KEKPO INDEX 1 INTO DATA(WA_KEKPO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KEKPO>-LGORT = 1.
<KEKPO>-BEDNR = 1.
<KEKPO>-BPRME = 1.
<KEKPO>-BPUMZ = 1.
<KEKPO>-BPUMN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KEKPO-NETPR, sy-vline,
  WA_KEKPO-PEINH, sy-vline,
  WA_KEKPO-AGDAT, sy-vline,
  WA_KEKPO-WEBAZ, sy-vline,
  WA_KEKPO-MWSKZ, sy-vline,
  WA_KEKPO-BONUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KEKPO 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_KEKPO 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_KEKPO INTO WA_KEKPO.


*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 CUNIT, internal->external for field BPRME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KEKPO-BPRME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KEKPO-BPRME.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KEKPO-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KEKPO-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_KEKPO-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KEKPO-FIPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KEKPO-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KEKPO-VOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOLIF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KEKPO-KOLIF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KEKPO-KOLIF.
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_KEKPO_STR, 
LGORT TYPE STRING,
BEDNR TYPE STRING,
BPRME TYPE STRING,
BPUMZ TYPE STRING,
BPUMN TYPE STRING,
NETPR TYPE STRING,
PEINH TYPE STRING,
AGDAT TYPE STRING,
WEBAZ TYPE STRING,
MWSKZ TYPE STRING,
BONUS TYPE STRING,
INSMK TYPE STRING,
SPINF TYPE STRING,
PRSDR TYPE STRING,
SCHPR TYPE STRING,
MAHN1 TYPE STRING,
MAHN2 TYPE STRING,
MAHN3 TYPE STRING,
UEBTO TYPE STRING,
UEBTK TYPE STRING,
UNTTO TYPE STRING,
BWTAR TYPE STRING,
ABSKZ TYPE STRING,
AGMEM TYPE STRING,
ELIKZ TYPE STRING,
EREKZ TYPE STRING,
VRTKZ TYPE STRING,
TWRKZ TYPE STRING,
WEPOS TYPE STRING,
WEUNB TYPE STRING,
REPOS TYPE STRING,
WEBRE TYPE STRING,
KZABS TYPE STRING,
LABNR TYPE STRING,
ETFZ1 TYPE STRING,
ETFZ2 TYPE STRING,
EVERS TYPE STRING,
KUNNR TYPE STRING,
ADRNR TYPE STRING,
EKKOL TYPE STRING,
SKTOF TYPE STRING,
PLIFZ TYPE STRING,
NTGEW TYPE STRING,
GEWEI TYPE STRING,
TXJCD TYPE STRING,
BSTAE TYPE STRING,
GEBER TYPE STRING,
FISTL TYPE STRING,
FIPOS TYPE STRING,
MEPRF TYPE STRING,
BRGEW TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
KOLIF TYPE STRING,
LTSNR TYPE STRING,
BUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KEKPO_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_KEKPO_STR-LGORT sy-vline 
WA_KEKPO_STR-BEDNR sy-vline 
WA_KEKPO_STR-BPRME sy-vline 
WA_KEKPO_STR-BPUMZ sy-vline 
WA_KEKPO_STR-BPUMN sy-vline 
WA_KEKPO_STR-NETPR sy-vline 
WA_KEKPO_STR-PEINH sy-vline 
WA_KEKPO_STR-AGDAT sy-vline 
WA_KEKPO_STR-WEBAZ sy-vline 
WA_KEKPO_STR-MWSKZ sy-vline 
WA_KEKPO_STR-BONUS sy-vline 
WA_KEKPO_STR-INSMK sy-vline 
WA_KEKPO_STR-SPINF sy-vline 
WA_KEKPO_STR-PRSDR sy-vline 
WA_KEKPO_STR-SCHPR sy-vline 
WA_KEKPO_STR-MAHN1 sy-vline 
WA_KEKPO_STR-MAHN2 sy-vline 
WA_KEKPO_STR-MAHN3 sy-vline 
WA_KEKPO_STR-UEBTO sy-vline 
WA_KEKPO_STR-UEBTK sy-vline 
WA_KEKPO_STR-UNTTO sy-vline 
WA_KEKPO_STR-BWTAR sy-vline 
WA_KEKPO_STR-ABSKZ sy-vline 
WA_KEKPO_STR-AGMEM sy-vline 
WA_KEKPO_STR-ELIKZ sy-vline 
WA_KEKPO_STR-EREKZ sy-vline 
WA_KEKPO_STR-VRTKZ sy-vline 
WA_KEKPO_STR-TWRKZ sy-vline 
WA_KEKPO_STR-WEPOS sy-vline 
WA_KEKPO_STR-WEUNB sy-vline 
WA_KEKPO_STR-REPOS sy-vline 
WA_KEKPO_STR-WEBRE sy-vline 
WA_KEKPO_STR-KZABS sy-vline 
WA_KEKPO_STR-LABNR sy-vline 
WA_KEKPO_STR-ETFZ1 sy-vline 
WA_KEKPO_STR-ETFZ2 sy-vline 
WA_KEKPO_STR-EVERS sy-vline 
WA_KEKPO_STR-KUNNR sy-vline 
WA_KEKPO_STR-ADRNR sy-vline 
WA_KEKPO_STR-EKKOL sy-vline 
WA_KEKPO_STR-SKTOF sy-vline 
WA_KEKPO_STR-PLIFZ sy-vline 
WA_KEKPO_STR-NTGEW sy-vline 
WA_KEKPO_STR-GEWEI sy-vline 
WA_KEKPO_STR-TXJCD sy-vline 
WA_KEKPO_STR-BSTAE sy-vline 
WA_KEKPO_STR-GEBER sy-vline 
WA_KEKPO_STR-FISTL sy-vline 
WA_KEKPO_STR-FIPOS sy-vline 
WA_KEKPO_STR-MEPRF sy-vline 
WA_KEKPO_STR-BRGEW sy-vline 
WA_KEKPO_STR-VOLUM sy-vline 
WA_KEKPO_STR-VOLEH sy-vline 
WA_KEKPO_STR-INCO1 sy-vline 
WA_KEKPO_STR-INCO2 sy-vline 
WA_KEKPO_STR-KOLIF sy-vline 
WA_KEKPO_STR-LTSNR sy-vline 
WA_KEKPO_STR-BUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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