ABAP Select data from SAP table E3STKOM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3STKOM 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 E3STKOM. 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 E3STKOM 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_E3STKOM TYPE STANDARD TABLE OF E3STKOM,
      WA_E3STKOM TYPE E3STKOM,
      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: <E3STKOM> TYPE E3STKOM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3STKOM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3STKOM
  INTO TABLE IT_E3STKOM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3STKOM
*  INTO TABLE @DATA(IT_E3STKOM2).
*--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_E3STKOM INDEX 1 INTO DATA(WA_E3STKOM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3STKOM ASSIGNING <E3STKOM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3STKOM>-MSGFN = 1.
<E3STKOM>-STLAL = 1.
<E3STKOM>-DATUV = 1.
<E3STKOM>-AENNR = 1.
<E3STKOM>-LOEKZ = 1.

ENDLOOP.

LOOP AT IT_E3STKOM INTO WA_E3STKOM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3STKOM-BMEIN, sy-vline,
  WA_E3STKOM-BMENG, sy-vline,
  WA_E3STKOM-CADKZ, sy-vline,
  WA_E3STKOM-LABOR, sy-vline,
  WA_E3STKOM-LTXSP, sy-vline,
  WA_E3STKOM-STKTX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3STKOM 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_E3STKOM 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_E3STKOM INTO WA_E3STKOM.


*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 STLAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3STKOM-STLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3STKOM-STLAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3STKOM-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3STKOM-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_E3STKOM-BMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3STKOM-BMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LTXSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_E3STKOM-LTXSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3STKOM-LTXSP.
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_E3STKOM_STR, 
MSGFN TYPE STRING,
STLAL TYPE STRING,
DATUV TYPE STRING,
AENNR TYPE STRING,
LOEKZ TYPE STRING,
BMEIN TYPE STRING,
BMENG TYPE STRING,
CADKZ TYPE STRING,
LABOR TYPE STRING,
LTXSP TYPE STRING,
STKTX TYPE STRING,
STLST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E3STKOM_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_E3STKOM_STR-MSGFN sy-vline 
WA_E3STKOM_STR-STLAL sy-vline 
WA_E3STKOM_STR-DATUV sy-vline 
WA_E3STKOM_STR-AENNR sy-vline 
WA_E3STKOM_STR-LOEKZ sy-vline 
WA_E3STKOM_STR-BMEIN sy-vline 
WA_E3STKOM_STR-BMENG sy-vline 
WA_E3STKOM_STR-CADKZ sy-vline 
WA_E3STKOM_STR-LABOR sy-vline 
WA_E3STKOM_STR-LTXSP sy-vline 
WA_E3STKOM_STR-STKTX sy-vline 
WA_E3STKOM_STR-STLST sy-vline      INTO ld_text SEPARATED BY SPACE.

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