ABAP Select data from SAP table ELOT_DEV_DISP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ELOT_DEV_DISP
*  INTO TABLE @DATA(IT_ELOT_DEV_DISP2).
*--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_ELOT_DEV_DISP INDEX 1 INTO DATA(WA_ELOT_DEV_DISP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ELOT_DEV_DISP>-MATNR = 1.
<ELOT_DEV_DISP>-HERST = 1.
<ELOT_DEV_DISP>-TYPBZ = 1.
<ELOT_DEV_DISP>-BAUJJ = 1.
<ELOT_DEV_DISP>-BGLJAHR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ELOT_DEV_DISP-BGLBIS, sy-vline,
  WA_ELOT_DEV_DISP-APPROVALNR, sy-vline,
  WA_ELOT_DEV_DISP-WERK, sy-vline,
  WA_ELOT_DEV_DISP-LAGER, sy-vline,
  WA_ELOT_DEV_DISP-SWERK, sy-vline,
  WA_ELOT_DEV_DISP-COUNTRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ELOT_DEV_DISP 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_ELOT_DEV_DISP 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_ELOT_DEV_DISP INTO WA_ELOT_DEV_DISP.


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

*Conversion exit GJAHR, internal->external for field BAUJJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ELOT_DEV_DISP-BAUJJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ELOT_DEV_DISP-BAUJJ.
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_ELOT_DEV_DISP_STR, 
MATNR TYPE STRING,
HERST TYPE STRING,
TYPBZ TYPE STRING,
BAUJJ TYPE STRING,
BGLJAHR TYPE STRING,
BGLBIS TYPE STRING,
APPROVALNR TYPE STRING,
WERK TYPE STRING,
LAGER TYPE STRING,
SWERK TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
POSTCODE TYPE STRING,
CITY TYPE STRING,
COUNTER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ELOT_DEV_DISP_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_ELOT_DEV_DISP_STR-MATNR sy-vline 
WA_ELOT_DEV_DISP_STR-HERST sy-vline 
WA_ELOT_DEV_DISP_STR-TYPBZ sy-vline 
WA_ELOT_DEV_DISP_STR-BAUJJ sy-vline 
WA_ELOT_DEV_DISP_STR-BGLJAHR sy-vline 
WA_ELOT_DEV_DISP_STR-BGLBIS sy-vline 
WA_ELOT_DEV_DISP_STR-APPROVALNR sy-vline 
WA_ELOT_DEV_DISP_STR-WERK sy-vline 
WA_ELOT_DEV_DISP_STR-LAGER sy-vline 
WA_ELOT_DEV_DISP_STR-SWERK sy-vline 
WA_ELOT_DEV_DISP_STR-COUNTRY sy-vline 
WA_ELOT_DEV_DISP_STR-REGION sy-vline 
WA_ELOT_DEV_DISP_STR-POSTCODE sy-vline 
WA_ELOT_DEV_DISP_STR-CITY sy-vline 
WA_ELOT_DEV_DISP_STR-COUNTER sy-vline      INTO ld_text SEPARATED BY SPACE.

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