ABAP Select data from SAP table BAPI1026 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPI1026 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 BAPI1026. 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 BAPI1026 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_BAPI1026 TYPE STANDARD TABLE OF BAPI1026,
      WA_BAPI1026 TYPE BAPI1026,
      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: <BAPI1026> TYPE BAPI1026.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BAPI1026.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BAPI1026
  INTO TABLE IT_BAPI1026.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI1026
*  INTO TABLE @DATA(IT_BAPI10262).
*--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_BAPI1026 INDEX 1 INTO DATA(WA_BAPI10262).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BAPI1026 ASSIGNING <BAPI1026>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI1026>-CONSDIMENSION = 1.
<BAPI1026>-CONSGROUP = 1.
<BAPI1026>-CONSVERSION = 1.
<BAPI1026>-CONSCHART = 1.
<BAPI1026>-FISCALYEAR = 1.

ENDLOOP.

LOOP AT IT_BAPI1026 INTO WA_BAPI1026.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI1026-TO_PERIOD, sy-vline,
  WA_BAPI1026-FROM_PERIOD, sy-vline,
  WA_BAPI1026-CONSUNIT_FLG, sy-vline,
  WA_BAPI1026-CONSITEM_FLG, sy-vline,
  WA_BAPI1026-CONSSUBITEM_FLG, sy-vline,
  WA_BAPI1026-CONSPARTNER_FLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI1026 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_BAPI1026 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_BAPI1026 INTO WA_BAPI1026.


*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 AFIMC, internal->external for field CONSGROUP
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_BAPI1026-CONSGROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI1026-CONSGROUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONSVERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI1026-CONSVERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI1026-CONSVERSION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_BAPI1026-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI1026-FISCALYEAR.
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_BAPI1026_STR, 
CONSDIMENSION TYPE STRING,
CONSGROUP TYPE STRING,
CONSVERSION TYPE STRING,
CONSCHART TYPE STRING,
FISCALYEAR TYPE STRING,
TO_PERIOD TYPE STRING,
FROM_PERIOD TYPE STRING,
CONSUNIT_FLG TYPE STRING,
CONSITEM_FLG TYPE STRING,
CONSSUBITEM_FLG TYPE STRING,
CONSPARTNER_FLG TYPE STRING,
TRANSCURR_FLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI1026_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_BAPI1026_STR-CONSDIMENSION sy-vline 
WA_BAPI1026_STR-CONSGROUP sy-vline 
WA_BAPI1026_STR-CONSVERSION sy-vline 
WA_BAPI1026_STR-CONSCHART sy-vline 
WA_BAPI1026_STR-FISCALYEAR sy-vline 
WA_BAPI1026_STR-TO_PERIOD sy-vline 
WA_BAPI1026_STR-FROM_PERIOD sy-vline 
WA_BAPI1026_STR-CONSUNIT_FLG sy-vline 
WA_BAPI1026_STR-CONSITEM_FLG sy-vline 
WA_BAPI1026_STR-CONSSUBITEM_FLG sy-vline 
WA_BAPI1026_STR-CONSPARTNER_FLG sy-vline 
WA_BAPI1026_STR-TRANSCURR_FLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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