ABAP Select data from SAP table ELBM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ELBM
*  INTO TABLE @DATA(IT_ELBM2).
*--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_ELBM INDEX 1 INTO DATA(WA_ELBM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ELBM>-MANDT = 1.
<ELBM>-EKORG = 1.
<ELBM>-INFNR = 1.
<ELBM>-HKRIT = 1.
<ELBM>-LIFNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ELBM-MATNR, sy-vline,
  WA_ELBM-ERNAM, sy-vline,
  WA_ELBM-ERDAT, sy-vline,
  WA_ELBM-LEBDT, sy-vline,
  WA_ELBM-DATUV, sy-vline,
  WA_ELBM-KRT01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ELBM 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_ELBM 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_ELBM INTO WA_ELBM.


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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ELBM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ELBM-MATNR.
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_ELBM_STR, 
MANDT TYPE STRING,
EKORG TYPE STRING,
INFNR TYPE STRING,
HKRIT TYPE STRING,
LIFNR TYPE STRING,
MATNR TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
LEBDT TYPE STRING,
DATUV TYPE STRING,
KRT01 TYPE STRING,
KRT02 TYPE STRING,
KRT03 TYPE STRING,
KRT04 TYPE STRING,
KRT05 TYPE STRING,
KRT06 TYPE STRING,
KRT07 TYPE STRING,
KRT08 TYPE STRING,
KRT09 TYPE STRING,
KRT10 TYPE STRING,
KRT11 TYPE STRING,
KRT12 TYPE STRING,
KRT13 TYPE STRING,
KRT14 TYPE STRING,
KRT15 TYPE STRING,
KRT16 TYPE STRING,
KRT17 TYPE STRING,
KRT18 TYPE STRING,
KRT19 TYPE STRING,
KRT20 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ELBM_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_ELBM_STR-MANDT sy-vline 
WA_ELBM_STR-EKORG sy-vline 
WA_ELBM_STR-INFNR sy-vline 
WA_ELBM_STR-HKRIT sy-vline 
WA_ELBM_STR-LIFNR sy-vline 
WA_ELBM_STR-MATNR sy-vline 
WA_ELBM_STR-ERNAM sy-vline 
WA_ELBM_STR-ERDAT sy-vline 
WA_ELBM_STR-LEBDT sy-vline 
WA_ELBM_STR-DATUV sy-vline 
WA_ELBM_STR-KRT01 sy-vline 
WA_ELBM_STR-KRT02 sy-vline 
WA_ELBM_STR-KRT03 sy-vline 
WA_ELBM_STR-KRT04 sy-vline 
WA_ELBM_STR-KRT05 sy-vline 
WA_ELBM_STR-KRT06 sy-vline 
WA_ELBM_STR-KRT07 sy-vline 
WA_ELBM_STR-KRT08 sy-vline 
WA_ELBM_STR-KRT09 sy-vline 
WA_ELBM_STR-KRT10 sy-vline 
WA_ELBM_STR-KRT11 sy-vline 
WA_ELBM_STR-KRT12 sy-vline 
WA_ELBM_STR-KRT13 sy-vline 
WA_ELBM_STR-KRT14 sy-vline 
WA_ELBM_STR-KRT15 sy-vline 
WA_ELBM_STR-KRT16 sy-vline 
WA_ELBM_STR-KRT17 sy-vline 
WA_ELBM_STR-KRT18 sy-vline 
WA_ELBM_STR-KRT19 sy-vline 
WA_ELBM_STR-KRT20 sy-vline      INTO ld_text SEPARATED BY SPACE.

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