ABAP Select data from SAP table EKPO_CI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EKPO_CI
*  INTO TABLE @DATA(IT_EKPO_CI2).
*--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_EKPO_CI INDEX 1 INTO DATA(WA_EKPO_CI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EKPO_CI>-ENH_DATE1 = 1.
<EKPO_CI>-ENH_DATE2 = 1.
<EKPO_CI>-ENH_PERCENT = 1.
<EKPO_CI>-ENH_NUMC1 = 1.
<EKPO_CI>-EKPO_CI_END = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EKPO_CI-CONTRACT_NUMBER, sy-vline,
  WA_EKPO_CI-CONTRACT_ITEM_NUMBER, sy-vline,
  WA_EKPO_CI-/DMBE/OPTIONALITYKEY, sy-vline,
  WA_EKPO_CI-/DMBE/OPTIONALITYFOR, sy-vline,
  WA_EKPO_CI-/DMBE/CIMAX2, sy-vline,
  WA_EKPO_CI-/DMBE/EFFECTIVEDATEFROM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EKPO_CI 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_EKPO_CI 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_EKPO_CI INTO WA_EKPO_CI.


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

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

*Conversion exit CUNIT, internal->external for field /DMBE/INVOICEUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EKPO_CI-/DMBE/INVOICEUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKPO_CI-/DMBE/INVOICEUOM.
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_EKPO_CI_STR, 
ENH_DATE1 TYPE STRING,
ENH_DATE2 TYPE STRING,
ENH_PERCENT TYPE STRING,
ENH_NUMC1 TYPE STRING,
EKPO_CI_END TYPE STRING,
CONTRACT_NUMBER TYPE STRING,
CONTRACT_ITEM_NUMBER TYPE STRING,
/DMBE/OPTIONALITYKEY TYPE STRING,
/DMBE/OPTIONALITYFOR TYPE STRING,
/DMBE/CIMAX2 TYPE STRING,
/DMBE/EFFECTIVEDATEFROM TYPE STRING,
/DMBE/EFFECTIVEDATETO TYPE STRING,
/DMBE/OPTIONOF TYPE STRING,
/DMBE/ACCOUNTING_TYPE TYPE STRING,
/DMBE/FAS_CODE TYPE STRING,
/DMBE/SCHEDULING_DESK TYPE STRING,
/DMBE/COMPONENTFOR TYPE STRING,
/DMBE/MIXEDPRODUCT TYPE STRING,
/DMBE/POSTEDDATE TYPE STRING,
/DMBE/DEAL_POSTED TYPE STRING,
/DMBE/INVOICEUOM TYPE STRING,
CONS_ORDER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EKPO_CI_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_EKPO_CI_STR-ENH_DATE1 sy-vline 
WA_EKPO_CI_STR-ENH_DATE2 sy-vline 
WA_EKPO_CI_STR-ENH_PERCENT sy-vline 
WA_EKPO_CI_STR-ENH_NUMC1 sy-vline 
WA_EKPO_CI_STR-EKPO_CI_END sy-vline 
WA_EKPO_CI_STR-CONTRACT_NUMBER sy-vline 
WA_EKPO_CI_STR-CONTRACT_ITEM_NUMBER sy-vline 
WA_EKPO_CI_STR-/DMBE/OPTIONALITYKEY sy-vline 
WA_EKPO_CI_STR-/DMBE/OPTIONALITYFOR sy-vline 
WA_EKPO_CI_STR-/DMBE/CIMAX2 sy-vline 
WA_EKPO_CI_STR-/DMBE/EFFECTIVEDATEFROM sy-vline 
WA_EKPO_CI_STR-/DMBE/EFFECTIVEDATETO sy-vline 
WA_EKPO_CI_STR-/DMBE/OPTIONOF sy-vline 
WA_EKPO_CI_STR-/DMBE/ACCOUNTING_TYPE sy-vline 
WA_EKPO_CI_STR-/DMBE/FAS_CODE sy-vline 
WA_EKPO_CI_STR-/DMBE/SCHEDULING_DESK sy-vline 
WA_EKPO_CI_STR-/DMBE/COMPONENTFOR sy-vline 
WA_EKPO_CI_STR-/DMBE/MIXEDPRODUCT sy-vline 
WA_EKPO_CI_STR-/DMBE/POSTEDDATE sy-vline 
WA_EKPO_CI_STR-/DMBE/DEAL_POSTED sy-vline 
WA_EKPO_CI_STR-/DMBE/INVOICEUOM sy-vline 
WA_EKPO_CI_STR-CONS_ORDER sy-vline      INTO ld_text SEPARATED BY SPACE.

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