ABAP Select data from SAP table EK08Z into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EK08Z 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 EK08Z. 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 EK08Z 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_EK08Z TYPE STANDARD TABLE OF EK08Z,
      WA_EK08Z TYPE EK08Z,
      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: <EK08Z> TYPE EK08Z.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EK08Z.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EK08Z
  INTO TABLE IT_EK08Z.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EK08Z
*  INTO TABLE @DATA(IT_EK08Z2).
*--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_EK08Z INDEX 1 INTO DATA(WA_EK08Z2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EK08Z ASSIGNING <EK08Z>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EK08Z>-ANBWA = 1.
<EK08Z>-BELNR = 1.
<EK08Z>-BEWAR = 1.
<EK08Z>-BUZEI = 1.
<EK08Z>-BWKEY = 1.

ENDLOOP.

LOOP AT IT_EK08Z INTO WA_EK08Z.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EK08Z-BWMOD, sy-vline,
  WA_EK08Z-EREKZ, sy-vline,
  WA_EK08Z-FAUS1, sy-vline,
  WA_EK08Z-FAUS2, sy-vline,
  WA_EK08Z-FMORE, sy-vline,
  WA_EK08Z-GJAHR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EK08Z 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_EK08Z 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_EK08Z INTO WA_EK08Z.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EK08Z-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EK08Z-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_EK08Z-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EK08Z-GJAHR.
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_EK08Z_STR, 
ANBWA TYPE STRING,
BELNR TYPE STRING,
BEWAR TYPE STRING,
BUZEI TYPE STRING,
BWKEY TYPE STRING,
BWMOD TYPE STRING,
EREKZ TYPE STRING,
FAUS1 TYPE STRING,
FAUS2 TYPE STRING,
FMORE TYPE STRING,
GJAHR TYPE STRING,
KOKRS TYPE STRING,
KTOPL TYPE STRING,
LNRAN TYPE STRING,
MENGE TYPE STRING,
MLMAA TYPE STRING,
MLAST TYPE STRING,
MWSKZ_SKB1 TYPE STRING,
POPTS TYPE STRING,
REUPD TYPE STRING,
SELKZ TYPE STRING,
SGTXT TYPE STRING,
SPGRG TYPE STRING,
SPGRM TYPE STRING,
SPGRP TYPE STRING,
SPGRQ TYPE STRING,
SPGRT TYPE STRING,
SPGRV TYPE STRING,
SPGRS TYPE STRING,
SPGRC TYPE STRING,
SPGREXT TYPE STRING,
SUBRC TYPE STRING,
TBTKZ TYPE STRING,
VTEXT TYPE STRING,
WRBTR TYPE STRING,
WMWST TYPE STRING,
XDETA TYPE STRING,
XLBPD TYPE STRING,
XMWST TYPE STRING,
XPRUE TYPE STRING,
ZUONR TYPE STRING,
WEREC TYPE STRING,
KALN1 TYPE STRING,
AMNT2 TYPE STRING,
AMNT1 TYPE STRING,
/ILE/XUPDA TYPE STRING,
TO_DATE TYPE STRING,
UE6_FLAG TYPE STRING,
UE6_WRBTR TYPE STRING,
UE6_WRBTR_ORG TYPE STRING,
IV_LINE_NUM TYPE STRING,
/NFM/SPGRK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EK08Z_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_EK08Z_STR-ANBWA sy-vline 
WA_EK08Z_STR-BELNR sy-vline 
WA_EK08Z_STR-BEWAR sy-vline 
WA_EK08Z_STR-BUZEI sy-vline 
WA_EK08Z_STR-BWKEY sy-vline 
WA_EK08Z_STR-BWMOD sy-vline 
WA_EK08Z_STR-EREKZ sy-vline 
WA_EK08Z_STR-FAUS1 sy-vline 
WA_EK08Z_STR-FAUS2 sy-vline 
WA_EK08Z_STR-FMORE sy-vline 
WA_EK08Z_STR-GJAHR sy-vline 
WA_EK08Z_STR-KOKRS sy-vline 
WA_EK08Z_STR-KTOPL sy-vline 
WA_EK08Z_STR-LNRAN sy-vline 
WA_EK08Z_STR-MENGE sy-vline 
WA_EK08Z_STR-MLMAA sy-vline 
WA_EK08Z_STR-MLAST sy-vline 
WA_EK08Z_STR-MWSKZ_SKB1 sy-vline 
WA_EK08Z_STR-POPTS sy-vline 
WA_EK08Z_STR-REUPD sy-vline 
WA_EK08Z_STR-SELKZ sy-vline 
WA_EK08Z_STR-SGTXT sy-vline 
WA_EK08Z_STR-SPGRG sy-vline 
WA_EK08Z_STR-SPGRM sy-vline 
WA_EK08Z_STR-SPGRP sy-vline 
WA_EK08Z_STR-SPGRQ sy-vline 
WA_EK08Z_STR-SPGRT sy-vline 
WA_EK08Z_STR-SPGRV sy-vline 
WA_EK08Z_STR-SPGRS sy-vline 
WA_EK08Z_STR-SPGRC sy-vline 
WA_EK08Z_STR-SPGREXT sy-vline 
WA_EK08Z_STR-SUBRC sy-vline 
WA_EK08Z_STR-TBTKZ sy-vline 
WA_EK08Z_STR-VTEXT sy-vline 
WA_EK08Z_STR-WRBTR sy-vline 
WA_EK08Z_STR-WMWST sy-vline 
WA_EK08Z_STR-XDETA sy-vline 
WA_EK08Z_STR-XLBPD sy-vline 
WA_EK08Z_STR-XMWST sy-vline 
WA_EK08Z_STR-XPRUE sy-vline 
WA_EK08Z_STR-ZUONR sy-vline 
WA_EK08Z_STR-WEREC sy-vline 
WA_EK08Z_STR-KALN1 sy-vline 
WA_EK08Z_STR-AMNT2 sy-vline 
WA_EK08Z_STR-AMNT1 sy-vline 
WA_EK08Z_STR-/ILE/XUPDA sy-vline 
WA_EK08Z_STR-TO_DATE sy-vline 
WA_EK08Z_STR-UE6_FLAG sy-vline 
WA_EK08Z_STR-UE6_WRBTR sy-vline 
WA_EK08Z_STR-UE6_WRBTR_ORG sy-vline 
WA_EK08Z_STR-IV_LINE_NUM sy-vline 
WA_EK08Z_STR-/NFM/SPGRK sy-vline      INTO ld_text SEPARATED BY SPACE.

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