ABAP Select data from SAP table E1COKEY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1COKEY 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 E1COKEY. 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 E1COKEY 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_E1COKEY TYPE STANDARD TABLE OF E1COKEY,
      WA_E1COKEY TYPE E1COKEY,
      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: <E1COKEY> TYPE E1COKEY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1COKEY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1COKEY
  INTO TABLE IT_E1COKEY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1COKEY
*  INTO TABLE @DATA(IT_E1COKEY2).
*--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_E1COKEY INDEX 1 INTO DATA(WA_E1COKEY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1COKEY ASSIGNING <E1COKEY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1COKEY>-HRKFT = 1.
<E1COKEY>-WERKS = 1.
<E1COKEY>-MATNR = 1.
<E1COKEY>-HKGRP = 1.
<E1COKEY>-CBRKE = 1.

ENDLOOP.

LOOP AT IT_E1COKEY INTO WA_E1COKEY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1COKEY-CBRKI, sy-vline,
  WA_E1COKEY-CBART, sy-vline,
  WA_E1COKEY-DRVTP, sy-vline,
  WA_E1COKEY-RECIND, sy-vline,
  WA_E1COKEY-PCVER, sy-vline,
  WA_E1COKEY-CBAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1COKEY 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_E1COKEY 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_E1COKEY INTO WA_E1COKEY.


*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 DRVTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E1COKEY-DRVTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E1COKEY-DRVTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECIND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E1COKEY-RECIND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E1COKEY-RECIND.
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_E1COKEY_STR, 
HRKFT TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
HKGRP TYPE STRING,
CBRKE TYPE STRING,
CBRKI TYPE STRING,
CBART TYPE STRING,
DRVTP TYPE STRING,
RECIND TYPE STRING,
PCVER TYPE STRING,
CBAT TYPE STRING,
BEMOT TYPE STRING,
PERNR TYPE STRING,
RSRCE TYPE STRING,
MATNR_EXTERNAL TYPE STRING,
MATNR_VERSION TYPE STRING,
MATNR_GUID TYPE STRING,
FKBER TYPE STRING,
PFKBER TYPE STRING,
GEBER TYPE STRING,
PGEBER TYPE STRING,
GRANT_NBR TYPE STRING,
PGRANT_NBR TYPE STRING,
BUDGET_PD TYPE STRING,
PBUDGET_PD TYPE STRING,
SEGMENT TYPE STRING,
PSEGMENT TYPE STRING,
MATNR_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1COKEY_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_E1COKEY_STR-HRKFT sy-vline 
WA_E1COKEY_STR-WERKS sy-vline 
WA_E1COKEY_STR-MATNR sy-vline 
WA_E1COKEY_STR-HKGRP sy-vline 
WA_E1COKEY_STR-CBRKE sy-vline 
WA_E1COKEY_STR-CBRKI sy-vline 
WA_E1COKEY_STR-CBART sy-vline 
WA_E1COKEY_STR-DRVTP sy-vline 
WA_E1COKEY_STR-RECIND sy-vline 
WA_E1COKEY_STR-PCVER sy-vline 
WA_E1COKEY_STR-CBAT sy-vline 
WA_E1COKEY_STR-BEMOT sy-vline 
WA_E1COKEY_STR-PERNR sy-vline 
WA_E1COKEY_STR-RSRCE sy-vline 
WA_E1COKEY_STR-MATNR_EXTERNAL sy-vline 
WA_E1COKEY_STR-MATNR_VERSION sy-vline 
WA_E1COKEY_STR-MATNR_GUID sy-vline 
WA_E1COKEY_STR-FKBER sy-vline 
WA_E1COKEY_STR-PFKBER sy-vline 
WA_E1COKEY_STR-GEBER sy-vline 
WA_E1COKEY_STR-PGEBER sy-vline 
WA_E1COKEY_STR-GRANT_NBR sy-vline 
WA_E1COKEY_STR-PGRANT_NBR sy-vline 
WA_E1COKEY_STR-BUDGET_PD sy-vline 
WA_E1COKEY_STR-PBUDGET_PD sy-vline 
WA_E1COKEY_STR-SEGMENT sy-vline 
WA_E1COKEY_STR-PSEGMENT sy-vline 
WA_E1COKEY_STR-MATNR_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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