ABAP Select data from SAP table ESO_S_EKPO_CO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESO_S_EKPO_CO
*  INTO TABLE @DATA(IT_ESO_S_EKPO_CO2).
*--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_ESO_S_EKPO_CO INDEX 1 INTO DATA(WA_ESO_S_EKPO_CO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESO_S_EKPO_CO>-EBELN = 1.
<ESO_S_EKPO_CO>-EBELP = 1.
<ESO_S_EKPO_CO>-LOEKZ = 1.
<ESO_S_EKPO_CO>-TXZ01 = 1.
<ESO_S_EKPO_CO>-MATNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESO_S_EKPO_CO-EMATN, sy-vline,
  WA_ESO_S_EKPO_CO-WERKS, sy-vline,
  WA_ESO_S_EKPO_CO-LGORT, sy-vline,
  WA_ESO_S_EKPO_CO-MATKL, sy-vline,
  WA_ESO_S_EKPO_CO-KTMNG, sy-vline,
  WA_ESO_S_EKPO_CO-MENGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESO_S_EKPO_CO 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_ESO_S_EKPO_CO 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_ESO_S_EKPO_CO INTO WA_ESO_S_EKPO_CO.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field SRM_CONTRACT_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESO_S_EKPO_CO-SRM_CONTRACT_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESO_S_EKPO_CO-SRM_CONTRACT_ID.
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_ESO_S_EKPO_CO_STR, 
EBELN TYPE STRING,
EBELP TYPE STRING,
LOEKZ TYPE STRING,
TXZ01 TYPE STRING,
MATNR TYPE STRING,
EMATN TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
MATKL TYPE STRING,
KTMNG TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
NETPR TYPE STRING,
NETWR TYPE STRING,
PSTYP TYPE STRING,
KNTTP TYPE STRING,
ZWERT TYPE STRING,
EFFWR TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
MTART TYPE STRING,
SRM_CONTRACT_ID TYPE STRING,
SRM_CONTRACT_ITM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESO_S_EKPO_CO_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_ESO_S_EKPO_CO_STR-EBELN sy-vline 
WA_ESO_S_EKPO_CO_STR-EBELP sy-vline 
WA_ESO_S_EKPO_CO_STR-LOEKZ sy-vline 
WA_ESO_S_EKPO_CO_STR-TXZ01 sy-vline 
WA_ESO_S_EKPO_CO_STR-MATNR sy-vline 
WA_ESO_S_EKPO_CO_STR-EMATN sy-vline 
WA_ESO_S_EKPO_CO_STR-WERKS sy-vline 
WA_ESO_S_EKPO_CO_STR-LGORT sy-vline 
WA_ESO_S_EKPO_CO_STR-MATKL sy-vline 
WA_ESO_S_EKPO_CO_STR-KTMNG sy-vline 
WA_ESO_S_EKPO_CO_STR-MENGE sy-vline 
WA_ESO_S_EKPO_CO_STR-MEINS sy-vline 
WA_ESO_S_EKPO_CO_STR-NETPR sy-vline 
WA_ESO_S_EKPO_CO_STR-NETWR sy-vline 
WA_ESO_S_EKPO_CO_STR-PSTYP sy-vline 
WA_ESO_S_EKPO_CO_STR-KNTTP sy-vline 
WA_ESO_S_EKPO_CO_STR-ZWERT sy-vline 
WA_ESO_S_EKPO_CO_STR-EFFWR sy-vline 
WA_ESO_S_EKPO_CO_STR-BANFN sy-vline 
WA_ESO_S_EKPO_CO_STR-BNFPO sy-vline 
WA_ESO_S_EKPO_CO_STR-MTART sy-vline 
WA_ESO_S_EKPO_CO_STR-SRM_CONTRACT_ID sy-vline 
WA_ESO_S_EKPO_CO_STR-SRM_CONTRACT_ITM sy-vline      INTO ld_text SEPARATED BY SPACE.

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