ABAP Select data from SAP table IOEKPO 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 IOEKPO 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 IOEKPO. 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 IOEKPO 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_IOEKPO TYPE STANDARD TABLE OF IOEKPO,
      WA_IOEKPO TYPE IOEKPO,
      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: <IOEKPO> TYPE IOEKPO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IOEKPO
*  INTO TABLE @DATA(IT_IOEKPO2).
*--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_IOEKPO INDEX 1 INTO DATA(WA_IOEKPO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IOEKPO>-MANDT = 1.
<IOEKPO>-EBELN = 1.
<IOEKPO>-EBELP = 1.
<IOEKPO>-LOEKZ = 1.
<IOEKPO>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IOEKPO-AEDAT, sy-vline,
  WA_IOEKPO-KONNR, sy-vline,
  WA_IOEKPO-TXZ01, sy-vline,
  WA_IOEKPO-MATNR, sy-vline,
  WA_IOEKPO-BANFN, sy-vline,
  WA_IOEKPO-BNFPO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IOEKPO 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_IOEKPO 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_IOEKPO INTO WA_IOEKPO.


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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IOEKPO-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IOEKPO-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field BPRME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IOEKPO-BPRME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IOEKPO-BPRME.
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_IOEKPO_STR, 
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
LOEKZ TYPE STRING,
BUKRS TYPE STRING,
AEDAT TYPE STRING,
KONNR TYPE STRING,
TXZ01 TYPE STRING,
MATNR TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
MATKL TYPE STRING,
INFNR TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
BPRME TYPE STRING,
NETPR TYPE STRING,
PEINH TYPE STRING,
NETWR TYPE STRING,
BRTWR TYPE STRING,
WEBAZ TYPE STRING,
INSMK TYPE STRING,
ELIKZ TYPE STRING,
EREKZ TYPE STRING,
PSTYP TYPE STRING,
KNTTP TYPE STRING,
WEPOS TYPE STRING,
REPOS TYPE STRING,
WEBRE TYPE STRING,
KTPNR TYPE STRING,
PLIFZ TYPE STRING,
WEMNG TYPE STRING,
WEWRT TYPE STRING,
REMNG TYPE STRING,
REWRT TYPE STRING,
EINDT TYPE STRING,
LPEIN TYPE STRING,
EINDT_ET TYPE STRING,
LPEIN_ET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IOEKPO_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_IOEKPO_STR-MANDT sy-vline 
WA_IOEKPO_STR-EBELN sy-vline 
WA_IOEKPO_STR-EBELP sy-vline 
WA_IOEKPO_STR-LOEKZ sy-vline 
WA_IOEKPO_STR-BUKRS sy-vline 
WA_IOEKPO_STR-AEDAT sy-vline 
WA_IOEKPO_STR-KONNR sy-vline 
WA_IOEKPO_STR-TXZ01 sy-vline 
WA_IOEKPO_STR-MATNR sy-vline 
WA_IOEKPO_STR-BANFN sy-vline 
WA_IOEKPO_STR-BNFPO sy-vline 
WA_IOEKPO_STR-WERKS sy-vline 
WA_IOEKPO_STR-LGORT sy-vline 
WA_IOEKPO_STR-MATKL sy-vline 
WA_IOEKPO_STR-INFNR sy-vline 
WA_IOEKPO_STR-MENGE sy-vline 
WA_IOEKPO_STR-MEINS sy-vline 
WA_IOEKPO_STR-BPRME sy-vline 
WA_IOEKPO_STR-NETPR sy-vline 
WA_IOEKPO_STR-PEINH sy-vline 
WA_IOEKPO_STR-NETWR sy-vline 
WA_IOEKPO_STR-BRTWR sy-vline 
WA_IOEKPO_STR-WEBAZ sy-vline 
WA_IOEKPO_STR-INSMK sy-vline 
WA_IOEKPO_STR-ELIKZ sy-vline 
WA_IOEKPO_STR-EREKZ sy-vline 
WA_IOEKPO_STR-PSTYP sy-vline 
WA_IOEKPO_STR-KNTTP sy-vline 
WA_IOEKPO_STR-WEPOS sy-vline 
WA_IOEKPO_STR-REPOS sy-vline 
WA_IOEKPO_STR-WEBRE sy-vline 
WA_IOEKPO_STR-KTPNR sy-vline 
WA_IOEKPO_STR-PLIFZ sy-vline 
WA_IOEKPO_STR-WEMNG sy-vline 
WA_IOEKPO_STR-WEWRT sy-vline 
WA_IOEKPO_STR-REMNG sy-vline 
WA_IOEKPO_STR-REWRT sy-vline 
WA_IOEKPO_STR-EINDT sy-vline 
WA_IOEKPO_STR-LPEIN sy-vline 
WA_IOEKPO_STR-EINDT_ET sy-vline 
WA_IOEKPO_STR-LPEIN_ET sy-vline      INTO ld_text SEPARATED BY SPACE.

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