ABAP Select data from SAP table EKREP 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 EKREP 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 EKREP. 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 EKREP 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_EKREP TYPE STANDARD TABLE OF EKREP,
      WA_EKREP TYPE EKREP,
      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: <EKREP> TYPE EKREP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EKREP
*  INTO TABLE @DATA(IT_EKREP2).
*--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_EKREP INDEX 1 INTO DATA(WA_EKREP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EKREP>-EBELN = 1.
<EKREP>-EBELP = 1.
<EKREP>-LPEIN = 1.
<EKREP>-EINDT = 1.
<EKREP>-EKORG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EKREP-BSTYP, sy-vline,
  WA_EKREP-BSART, sy-vline,
  WA_EKREP-EKGRP, sy-vline,
  WA_EKREP-LIFNR, sy-vline,
  WA_EKREP-NAME1, sy-vline,
  WA_EKREP-BEDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EKREP 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_EKREP 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_EKREP INTO WA_EKREP.


*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_EKREP-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKREP-EBELN.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field LMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EKREP-LMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKREP-LMEIN.
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_EKREP_STR, 
EBELN TYPE STRING,
EBELP TYPE STRING,
LPEIN TYPE STRING,
EINDT TYPE STRING,
EKORG TYPE STRING,
BSTYP TYPE STRING,
BSART TYPE STRING,
EKGRP TYPE STRING,
LIFNR TYPE STRING,
NAME1 TYPE STRING,
BEDAT TYPE STRING,
MATNR TYPE STRING,
TXZ01 TYPE STRING,
WERKS TYPE STRING,
MATKL TYPE STRING,
PSTYP TYPE STRING,
KNTTP TYPE STRING,
MEINS TYPE STRING,
LMEIN TYPE STRING,
KTMNG TYPE STRING,
KTLMG TYPE STRING,
MENGE TYPE STRING,
BELMG TYPE STRING,
ETMEN TYPE STRING,
ETLMG TYPE STRING,
WEMNG TYPE STRING,
WELMG TYPE STRING,
REMNG TYPE STRING,
RELMG TYPE STRING,
WAERS TYPE STRING,
HWAER TYPE STRING,
NETWR TYPE STRING,
NETHW TYPE STRING,
KTWRT TYPE STRING,
KTHWR TYPE STRING,
ZWERT TYPE STRING,
ZWHWT TYPE STRING,
REWRT TYPE STRING,
WEWRT TYPE STRING,
ACTIV TYPE STRING,
SELKZ TYPE STRING,
EINTT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EKREP_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_EKREP_STR-EBELN sy-vline 
WA_EKREP_STR-EBELP sy-vline 
WA_EKREP_STR-LPEIN sy-vline 
WA_EKREP_STR-EINDT sy-vline 
WA_EKREP_STR-EKORG sy-vline 
WA_EKREP_STR-BSTYP sy-vline 
WA_EKREP_STR-BSART sy-vline 
WA_EKREP_STR-EKGRP sy-vline 
WA_EKREP_STR-LIFNR sy-vline 
WA_EKREP_STR-NAME1 sy-vline 
WA_EKREP_STR-BEDAT sy-vline 
WA_EKREP_STR-MATNR sy-vline 
WA_EKREP_STR-TXZ01 sy-vline 
WA_EKREP_STR-WERKS sy-vline 
WA_EKREP_STR-MATKL sy-vline 
WA_EKREP_STR-PSTYP sy-vline 
WA_EKREP_STR-KNTTP sy-vline 
WA_EKREP_STR-MEINS sy-vline 
WA_EKREP_STR-LMEIN sy-vline 
WA_EKREP_STR-KTMNG sy-vline 
WA_EKREP_STR-KTLMG sy-vline 
WA_EKREP_STR-MENGE sy-vline 
WA_EKREP_STR-BELMG sy-vline 
WA_EKREP_STR-ETMEN sy-vline 
WA_EKREP_STR-ETLMG sy-vline 
WA_EKREP_STR-WEMNG sy-vline 
WA_EKREP_STR-WELMG sy-vline 
WA_EKREP_STR-REMNG sy-vline 
WA_EKREP_STR-RELMG sy-vline 
WA_EKREP_STR-WAERS sy-vline 
WA_EKREP_STR-HWAER sy-vline 
WA_EKREP_STR-NETWR sy-vline 
WA_EKREP_STR-NETHW sy-vline 
WA_EKREP_STR-KTWRT sy-vline 
WA_EKREP_STR-KTHWR sy-vline 
WA_EKREP_STR-ZWERT sy-vline 
WA_EKREP_STR-ZWHWT sy-vline 
WA_EKREP_STR-REWRT sy-vline 
WA_EKREP_STR-WEWRT sy-vline 
WA_EKREP_STR-ACTIV sy-vline 
WA_EKREP_STR-SELKZ sy-vline 
WA_EKREP_STR-EINTT sy-vline      INTO ld_text SEPARATED BY SPACE.

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