ABAP Select data from SAP table BAPIDEMANDSETX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIDEMANDSETX
*  INTO TABLE @DATA(IT_BAPIDEMANDSETX2).
*--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_BAPIDEMANDSETX INDEX 1 INTO DATA(WA_BAPIDEMANDSETX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIDEMANDSETX>-QUANTITY_FIXED = 1.
<BAPIDEMANDSETX>-QUANTITY = 1.
<BAPIDEMANDSETX>-SALESUNIT = 1.
<BAPIDEMANDSETX>-QUANTITY_SHP = 1.
<BAPIDEMANDSETX>-QUANTITY1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIDEMANDSETX-REASONCODE1, sy-vline,
  WA_BAPIDEMANDSETX-QUANTITY2, sy-vline,
  WA_BAPIDEMANDSETX-REASONCODE2, sy-vline,
  WA_BAPIDEMANDSETX-QUANTITY3, sy-vline,
  WA_BAPIDEMANDSETX-REASONCODE3, sy-vline,
  WA_BAPIDEMANDSETX-QUANTITY4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIDEMANDSETX 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_BAPIDEMANDSETX 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_BAPIDEMANDSETX INTO WA_BAPIDEMANDSETX.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_BAPIDEMANDSETX_STR, 
QUANTITY_FIXED TYPE STRING,
QUANTITY TYPE STRING,
SALESUNIT TYPE STRING,
QUANTITY_SHP TYPE STRING,
QUANTITY1 TYPE STRING,
REASONCODE1 TYPE STRING,
QUANTITY2 TYPE STRING,
REASONCODE2 TYPE STRING,
QUANTITY3 TYPE STRING,
REASONCODE3 TYPE STRING,
QUANTITY4 TYPE STRING,
REASONCODE4 TYPE STRING,
QUANTITY5 TYPE STRING,
REASONCODE5 TYPE STRING,
QUANTITY6 TYPE STRING,
REASONCODE6 TYPE STRING,
QUANTITY7 TYPE STRING,
REASONCODE7 TYPE STRING,
QUANTITY8 TYPE STRING,
REASONCODE8 TYPE STRING,
QUANTITY9 TYPE STRING,
REASONCODE9 TYPE STRING,
BLOCKED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIDEMANDSETX_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_BAPIDEMANDSETX_STR-QUANTITY_FIXED sy-vline 
WA_BAPIDEMANDSETX_STR-QUANTITY sy-vline 
WA_BAPIDEMANDSETX_STR-SALESUNIT sy-vline 
WA_BAPIDEMANDSETX_STR-QUANTITY_SHP sy-vline 
WA_BAPIDEMANDSETX_STR-QUANTITY1 sy-vline 
WA_BAPIDEMANDSETX_STR-REASONCODE1 sy-vline 
WA_BAPIDEMANDSETX_STR-QUANTITY2 sy-vline 
WA_BAPIDEMANDSETX_STR-REASONCODE2 sy-vline 
WA_BAPIDEMANDSETX_STR-QUANTITY3 sy-vline 
WA_BAPIDEMANDSETX_STR-REASONCODE3 sy-vline 
WA_BAPIDEMANDSETX_STR-QUANTITY4 sy-vline 
WA_BAPIDEMANDSETX_STR-REASONCODE4 sy-vline 
WA_BAPIDEMANDSETX_STR-QUANTITY5 sy-vline 
WA_BAPIDEMANDSETX_STR-REASONCODE5 sy-vline 
WA_BAPIDEMANDSETX_STR-QUANTITY6 sy-vline 
WA_BAPIDEMANDSETX_STR-REASONCODE6 sy-vline 
WA_BAPIDEMANDSETX_STR-QUANTITY7 sy-vline 
WA_BAPIDEMANDSETX_STR-REASONCODE7 sy-vline 
WA_BAPIDEMANDSETX_STR-QUANTITY8 sy-vline 
WA_BAPIDEMANDSETX_STR-REASONCODE8 sy-vline 
WA_BAPIDEMANDSETX_STR-QUANTITY9 sy-vline 
WA_BAPIDEMANDSETX_STR-REASONCODE9 sy-vline 
WA_BAPIDEMANDSETX_STR-BLOCKED sy-vline      INTO ld_text SEPARATED BY SPACE.

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