ABAP Select data from SAP table EKON into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EKON
*  INTO TABLE @DATA(IT_EKON2).
*--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_EKON INDEX 1 INTO DATA(WA_EKON2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EKON>-MANDT = 1.
<EKON>-KONZVER = 1.
<EKON>-BUKRS = 1.
<EKON>-SPARTE = 1.
<EKON>-KUNDE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EKON-KAVERF, sy-vline,
  WA_EKON-KAVERF_EA16, sy-vline,
  WA_EKON-BEARKZ, sy-vline,
  WA_EKON-VERTART, sy-vline,
  WA_EKON-VERLZEIT, sy-vline,
  WA_EKON-VERWGEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EKON 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_EKON 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_EKON INTO WA_EKON.


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

*Conversion exit ALPHA, internal->external for field KUNDE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EKON-KUNDE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKON-KUNDE.
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_EKON_STR, 
MANDT TYPE STRING,
KONZVER TYPE STRING,
BUKRS TYPE STRING,
SPARTE TYPE STRING,
KUNDE TYPE STRING,
KAVERF TYPE STRING,
KAVERF_EA16 TYPE STRING,
BEARKZ TYPE STRING,
VERTART TYPE STRING,
VERLZEIT TYPE STRING,
VERWGEM TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BEGRU TYPE STRING,
LOEVM TYPE STRING,
VBEGINN TYPE STRING,
VENDE TYPE STRING,
VERLDAT TYPE STRING,
KUENDAT TYPE STRING,
ANZVERL TYPE STRING,
VERLEINH TYPE STRING,
ANZKUEN TYPE STRING,
KUENEINH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EKON_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_EKON_STR-MANDT sy-vline 
WA_EKON_STR-KONZVER sy-vline 
WA_EKON_STR-BUKRS sy-vline 
WA_EKON_STR-SPARTE sy-vline 
WA_EKON_STR-KUNDE sy-vline 
WA_EKON_STR-KAVERF sy-vline 
WA_EKON_STR-KAVERF_EA16 sy-vline 
WA_EKON_STR-BEARKZ sy-vline 
WA_EKON_STR-VERTART sy-vline 
WA_EKON_STR-VERLZEIT sy-vline 
WA_EKON_STR-VERWGEM sy-vline 
WA_EKON_STR-ERDAT sy-vline 
WA_EKON_STR-ERNAM sy-vline 
WA_EKON_STR-AEDAT sy-vline 
WA_EKON_STR-AENAM sy-vline 
WA_EKON_STR-BEGRU sy-vline 
WA_EKON_STR-LOEVM sy-vline 
WA_EKON_STR-VBEGINN sy-vline 
WA_EKON_STR-VENDE sy-vline 
WA_EKON_STR-VERLDAT sy-vline 
WA_EKON_STR-KUENDAT sy-vline 
WA_EKON_STR-ANZVERL sy-vline 
WA_EKON_STR-VERLEINH sy-vline 
WA_EKON_STR-ANZKUEN sy-vline 
WA_EKON_STR-KUENEINH sy-vline      INTO ld_text SEPARATED BY SPACE.

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