ABAP Select data from SAP table TSUM03 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TSUM03 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 TSUM03. 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 TSUM03 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_TSUM03 TYPE STANDARD TABLE OF TSUM03,
      WA_TSUM03 TYPE TSUM03,
      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: <TSUM03> TYPE TSUM03.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TSUM03.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TSUM03
  INTO TABLE IT_TSUM03.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TSUM03
*  INTO TABLE @DATA(IT_TSUM032).
*--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_TSUM03 INDEX 1 INTO DATA(WA_TSUM032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TSUM03 ASSIGNING <TSUM03>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TSUM03>-MANDT = 1.
<TSUM03>-WERKS = 1.
<TSUM03>-SUMRST3 = 1.
<TSUM03>-SUMCT3 = 1.
<TSUM03>-UTTRM = 1.

ENDLOOP.

LOOP AT IT_TSUM03 INTO WA_TSUM03.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TSUM03-VPACKSUM, sy-vline,
  WA_TSUM03-BWAWE, sy-vline,
  WA_TSUM03-RKFORM, sy-vline,
  WA_TSUM03-RKDRUFB, sy-vline,
  WA_TSUM03-RULES, sy-vline,
  WA_TSUM03-KALSM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TSUM03 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_TSUM03 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_TSUM03 INTO WA_TSUM03.


*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_TSUM03_STR, 
MANDT TYPE STRING,
WERKS TYPE STRING,
SUMRST3 TYPE STRING,
SUMCT3 TYPE STRING,
UTTRM TYPE STRING,
VPACKSUM TYPE STRING,
BWAWE TYPE STRING,
RKFORM TYPE STRING,
RKDRUFB TYPE STRING,
RULES TYPE STRING,
KALSM TYPE STRING,
JITPTP TYPE STRING,
GMREL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TSUM03_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_TSUM03_STR-MANDT sy-vline 
WA_TSUM03_STR-WERKS sy-vline 
WA_TSUM03_STR-SUMRST3 sy-vline 
WA_TSUM03_STR-SUMCT3 sy-vline 
WA_TSUM03_STR-UTTRM sy-vline 
WA_TSUM03_STR-VPACKSUM sy-vline 
WA_TSUM03_STR-BWAWE sy-vline 
WA_TSUM03_STR-RKFORM sy-vline 
WA_TSUM03_STR-RKDRUFB sy-vline 
WA_TSUM03_STR-RULES sy-vline 
WA_TSUM03_STR-KALSM sy-vline 
WA_TSUM03_STR-JITPTP sy-vline 
WA_TSUM03_STR-GMREL sy-vline      INTO ld_text SEPARATED BY SPACE.

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