ABAP Select data from SAP table BASW_SUMMARY_LIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BASW_SUMMARY_LIST
*  INTO TABLE @DATA(IT_BASW_SUMMARY_LIST2).
*--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_BASW_SUMMARY_LIST INDEX 1 INTO DATA(WA_BASW_SUMMARY_LIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BASW_SUMMARY_LIST>-SWITCH_NO = 1.
<BASW_SUMMARY_LIST>-RTCUR = 1.
<BASW_SUMMARY_LIST>-CATEGORY = 1.
<BASW_SUMMARY_LIST>-VALUT = 1.
<BASW_SUMMARY_LIST>-SOURCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BASW_SUMMARY_LIST-REFDOCNR, sy-vline,
  WA_BASW_SUMMARY_LIST-REFDOCLN, sy-vline,
  WA_BASW_SUMMARY_LIST-DOCNR, sy-vline,
  WA_BASW_SUMMARY_LIST-DOCLN, sy-vline,
  WA_BASW_SUMMARY_LIST-TSL, sy-vline,
  WA_BASW_SUMMARY_LIST-HSL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BASW_SUMMARY_LIST 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_BASW_SUMMARY_LIST 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_BASW_SUMMARY_LIST INTO WA_BASW_SUMMARY_LIST.


*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_BASW_SUMMARY_LIST_STR, 
SWITCH_NO TYPE STRING,
RTCUR TYPE STRING,
CATEGORY TYPE STRING,
VALUT TYPE STRING,
SOURCE TYPE STRING,
REFDOCNR TYPE STRING,
REFDOCLN TYPE STRING,
DOCNR TYPE STRING,
DOCLN TYPE STRING,
TSL TYPE STRING,
HSL TYPE STRING,
LC2 TYPE STRING,
LC3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BASW_SUMMARY_LIST_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_BASW_SUMMARY_LIST_STR-SWITCH_NO sy-vline 
WA_BASW_SUMMARY_LIST_STR-RTCUR sy-vline 
WA_BASW_SUMMARY_LIST_STR-CATEGORY sy-vline 
WA_BASW_SUMMARY_LIST_STR-VALUT sy-vline 
WA_BASW_SUMMARY_LIST_STR-SOURCE sy-vline 
WA_BASW_SUMMARY_LIST_STR-REFDOCNR sy-vline 
WA_BASW_SUMMARY_LIST_STR-REFDOCLN sy-vline 
WA_BASW_SUMMARY_LIST_STR-DOCNR sy-vline 
WA_BASW_SUMMARY_LIST_STR-DOCLN sy-vline 
WA_BASW_SUMMARY_LIST_STR-TSL sy-vline 
WA_BASW_SUMMARY_LIST_STR-HSL sy-vline 
WA_BASW_SUMMARY_LIST_STR-LC2 sy-vline 
WA_BASW_SUMMARY_LIST_STR-LC3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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