ABAP Select data from SAP table BSELP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BSELP
*  INTO TABLE @DATA(IT_BSELP2).
*--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_BSELP INDEX 1 INTO DATA(WA_BSELP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BSELP>-STYPE = 1.
<BSELP>-TBNAM = 1.
<BSELP>-FELDN_1 = 1.
<BSELP>-SLVON_1 = 1.
<BSELP>-SLBIS_1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BSELP-FELDN_2, sy-vline,
  WA_BSELP-SLVON_2, sy-vline,
  WA_BSELP-SLBIS_2, sy-vline,
  WA_BSELP-FELDN_3, sy-vline,
  WA_BSELP-SLVON_3, sy-vline,
  WA_BSELP-SLBIS_3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BSELP 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_BSELP 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_BSELP INTO WA_BSELP.


*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_BSELP_STR, 
STYPE TYPE STRING,
TBNAM TYPE STRING,
FELDN_1 TYPE STRING,
SLVON_1 TYPE STRING,
SLBIS_1 TYPE STRING,
FELDN_2 TYPE STRING,
SLVON_2 TYPE STRING,
SLBIS_2 TYPE STRING,
FELDN_3 TYPE STRING,
SLVON_3 TYPE STRING,
SLBIS_3 TYPE STRING,
FELDN_4 TYPE STRING,
SLVON_4 TYPE STRING,
SLBIS_4 TYPE STRING,
FELDN_5 TYPE STRING,
SLVON_5 TYPE STRING,
SLBIS_5 TYPE STRING,
FELDN_6 TYPE STRING,
SLVON_6 TYPE STRING,
SLBIS_6 TYPE STRING,
FELDN_7 TYPE STRING,
SLVON_7 TYPE STRING,
SLBIS_7 TYPE STRING,
FELDN_8 TYPE STRING,
SLVON_8 TYPE STRING,
SLBIS_8 TYPE STRING,
FELDN_9 TYPE STRING,
SLVON_9 TYPE STRING,
SLBIS_9 TYPE STRING,
FELDN_10 TYPE STRING,
SLVON_10 TYPE STRING,
SLBIS_10 TYPE STRING,
FELDN_11 TYPE STRING,
SLVON_11 TYPE STRING,
SLBIS_11 TYPE STRING,
FELDN_12 TYPE STRING,
SLVON_12 TYPE STRING,
SLBIS_12 TYPE STRING,
FELDN_13 TYPE STRING,
SLVON_13 TYPE STRING,
SLBIS_13 TYPE STRING,
FELDN_14 TYPE STRING,
SLVON_14 TYPE STRING,
SLBIS_14 TYPE STRING,
FELDN_15 TYPE STRING,
SLVON_15 TYPE STRING,
SLBIS_15 TYPE STRING,
FELDN_16 TYPE STRING,
SLVON_16 TYPE STRING,
SLBIS_16 TYPE STRING,
FELDN_17 TYPE STRING,
SLVON_17 TYPE STRING,
SLBIS_17 TYPE STRING,
FELDN_18 TYPE STRING,
SLVON_18 TYPE STRING,
SLBIS_18 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BSELP_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_BSELP_STR-STYPE sy-vline 
WA_BSELP_STR-TBNAM sy-vline 
WA_BSELP_STR-FELDN_1 sy-vline 
WA_BSELP_STR-SLVON_1 sy-vline 
WA_BSELP_STR-SLBIS_1 sy-vline 
WA_BSELP_STR-FELDN_2 sy-vline 
WA_BSELP_STR-SLVON_2 sy-vline 
WA_BSELP_STR-SLBIS_2 sy-vline 
WA_BSELP_STR-FELDN_3 sy-vline 
WA_BSELP_STR-SLVON_3 sy-vline 
WA_BSELP_STR-SLBIS_3 sy-vline 
WA_BSELP_STR-FELDN_4 sy-vline 
WA_BSELP_STR-SLVON_4 sy-vline 
WA_BSELP_STR-SLBIS_4 sy-vline 
WA_BSELP_STR-FELDN_5 sy-vline 
WA_BSELP_STR-SLVON_5 sy-vline 
WA_BSELP_STR-SLBIS_5 sy-vline 
WA_BSELP_STR-FELDN_6 sy-vline 
WA_BSELP_STR-SLVON_6 sy-vline 
WA_BSELP_STR-SLBIS_6 sy-vline 
WA_BSELP_STR-FELDN_7 sy-vline 
WA_BSELP_STR-SLVON_7 sy-vline 
WA_BSELP_STR-SLBIS_7 sy-vline 
WA_BSELP_STR-FELDN_8 sy-vline 
WA_BSELP_STR-SLVON_8 sy-vline 
WA_BSELP_STR-SLBIS_8 sy-vline 
WA_BSELP_STR-FELDN_9 sy-vline 
WA_BSELP_STR-SLVON_9 sy-vline 
WA_BSELP_STR-SLBIS_9 sy-vline 
WA_BSELP_STR-FELDN_10 sy-vline 
WA_BSELP_STR-SLVON_10 sy-vline 
WA_BSELP_STR-SLBIS_10 sy-vline 
WA_BSELP_STR-FELDN_11 sy-vline 
WA_BSELP_STR-SLVON_11 sy-vline 
WA_BSELP_STR-SLBIS_11 sy-vline 
WA_BSELP_STR-FELDN_12 sy-vline 
WA_BSELP_STR-SLVON_12 sy-vline 
WA_BSELP_STR-SLBIS_12 sy-vline 
WA_BSELP_STR-FELDN_13 sy-vline 
WA_BSELP_STR-SLVON_13 sy-vline 
WA_BSELP_STR-SLBIS_13 sy-vline 
WA_BSELP_STR-FELDN_14 sy-vline 
WA_BSELP_STR-SLVON_14 sy-vline 
WA_BSELP_STR-SLBIS_14 sy-vline 
WA_BSELP_STR-FELDN_15 sy-vline 
WA_BSELP_STR-SLVON_15 sy-vline 
WA_BSELP_STR-SLBIS_15 sy-vline 
WA_BSELP_STR-FELDN_16 sy-vline 
WA_BSELP_STR-SLVON_16 sy-vline 
WA_BSELP_STR-SLBIS_16 sy-vline 
WA_BSELP_STR-FELDN_17 sy-vline 
WA_BSELP_STR-SLVON_17 sy-vline 
WA_BSELP_STR-SLBIS_17 sy-vline 
WA_BSELP_STR-FELDN_18 sy-vline 
WA_BSELP_STR-SLVON_18 sy-vline 
WA_BSELP_STR-SLBIS_18 sy-vline      INTO ld_text SEPARATED BY SPACE.

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