ABAP Select data from SAP table BAPI6101 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPI6101 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 BAPI6101. 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 BAPI6101 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_BAPI6101 TYPE STANDARD TABLE OF BAPI6101,
      WA_BAPI6101 TYPE BAPI6101,
      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: <BAPI6101> TYPE BAPI6101.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BAPI6101.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BAPI6101
  INTO TABLE IT_BAPI6101.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI6101
*  INTO TABLE @DATA(IT_BAPI61012).
*--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_BAPI6101 INDEX 1 INTO DATA(WA_BAPI61012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BAPI6101 ASSIGNING <BAPI6101>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI6101>-SOURCESYSTEM = 1.
<BAPI6101>-TEXTLONG = 1.
<BAPI6101>-DWSYSTEM = 1.
<BAPI6101>-BASICIDOCTYPE = 1.
<BAPI6101>-PORTNAME = 1.

ENDLOOP.

LOOP AT IT_BAPI6101 INTO WA_BAPI6101.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI6101-SYSTEMTYPE, sy-vline,
  WA_BAPI6101-METHOD, sy-vline,
  WA_BAPI6101-PROGRAM, sy-vline,
  WA_BAPI6101-GWHOST, sy-vline,
  WA_BAPI6101-GWSERVICE, sy-vline,
  WA_BAPI6101-HOST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI6101 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_BAPI6101 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_BAPI6101 INTO WA_BAPI6101.


*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 ALPHA, internal->external for field SOURCESYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI6101-SOURCESYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI6101-SOURCESYSTEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DWSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI6101-DWSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI6101-DWSYSTEM.
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_BAPI6101_STR, 
SOURCESYSTEM TYPE STRING,
TEXTLONG TYPE STRING,
DWSYSTEM TYPE STRING,
BASICIDOCTYPE TYPE STRING,
PORTNAME TYPE STRING,
SYSTEMTYPE TYPE STRING,
METHOD TYPE STRING,
PROGRAM TYPE STRING,
GWHOST TYPE STRING,
GWSERVICE TYPE STRING,
HOST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI6101_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_BAPI6101_STR-SOURCESYSTEM sy-vline 
WA_BAPI6101_STR-TEXTLONG sy-vline 
WA_BAPI6101_STR-DWSYSTEM sy-vline 
WA_BAPI6101_STR-BASICIDOCTYPE sy-vline 
WA_BAPI6101_STR-PORTNAME sy-vline 
WA_BAPI6101_STR-SYSTEMTYPE sy-vline 
WA_BAPI6101_STR-METHOD sy-vline 
WA_BAPI6101_STR-PROGRAM sy-vline 
WA_BAPI6101_STR-GWHOST sy-vline 
WA_BAPI6101_STR-GWSERVICE sy-vline 
WA_BAPI6101_STR-HOST sy-vline      INTO ld_text SEPARATED BY SPACE.

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