ABAP Select data from SAP table OMACCOUNTING into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OMACCOUNTING
*  INTO TABLE @DATA(IT_OMACCOUNTING2).
*--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_OMACCOUNTING INDEX 1 INTO DATA(WA_OMACCOUNTING2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OMACCOUNTING>-BUKRS = 1.
<OMACCOUNTING>-GSBER = 1.
<OMACCOUNTING>-KOKRS = 1.
<OMACCOUNTING>-ROTYPE = 1.
<OMACCOUNTING>-KOSTL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OMACCOUNTING-AUFNR, sy-vline,
  WA_OMACCOUNTING-POSNR, sy-vline,
  WA_OMACCOUNTING-FIKRS, sy-vline,
  WA_OMACCOUNTING-FINCODE, sy-vline,
  WA_OMACCOUNTING-FKBER, sy-vline,
  WA_OMACCOUNTING-GRANT_NBR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OMACCOUNTING 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_OMACCOUNTING 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_OMACCOUNTING INTO WA_OMACCOUNTING.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OMACCOUNTING-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OMACCOUNTING-KOSTL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSP, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_OMACCOUNTING-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OMACCOUNTING-POSNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field SGMNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OMACCOUNTING-SGMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OMACCOUNTING-SGMNT.
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_OMACCOUNTING_STR, 
BUKRS TYPE STRING,
GSBER TYPE STRING,
KOKRS TYPE STRING,
ROTYPE TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
POSNR TYPE STRING,
FIKRS TYPE STRING,
FINCODE TYPE STRING,
FKBER TYPE STRING,
GRANT_NBR TYPE STRING,
FISTL TYPE STRING,
DART TYPE STRING,
UDART TYPE STRING,
SGMNT TYPE STRING,
BUDGET_PD TYPE STRING,
PERSA TYPE STRING,
BTRTL TYPE STRING,
INH_OTYPE TYPE STRING,
INH_OBJID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OMACCOUNTING_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_OMACCOUNTING_STR-BUKRS sy-vline 
WA_OMACCOUNTING_STR-GSBER sy-vline 
WA_OMACCOUNTING_STR-KOKRS sy-vline 
WA_OMACCOUNTING_STR-ROTYPE sy-vline 
WA_OMACCOUNTING_STR-KOSTL sy-vline 
WA_OMACCOUNTING_STR-AUFNR sy-vline 
WA_OMACCOUNTING_STR-POSNR sy-vline 
WA_OMACCOUNTING_STR-FIKRS sy-vline 
WA_OMACCOUNTING_STR-FINCODE sy-vline 
WA_OMACCOUNTING_STR-FKBER sy-vline 
WA_OMACCOUNTING_STR-GRANT_NBR sy-vline 
WA_OMACCOUNTING_STR-FISTL sy-vline 
WA_OMACCOUNTING_STR-DART sy-vline 
WA_OMACCOUNTING_STR-UDART sy-vline 
WA_OMACCOUNTING_STR-SGMNT sy-vline 
WA_OMACCOUNTING_STR-BUDGET_PD sy-vline 
WA_OMACCOUNTING_STR-PERSA sy-vline 
WA_OMACCOUNTING_STR-BTRTL sy-vline 
WA_OMACCOUNTING_STR-INH_OTYPE sy-vline 
WA_OMACCOUNTING_STR-INH_OBJID sy-vline      INTO ld_text SEPARATED BY SPACE.

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