ABAP Select data from SAP table ACCIT_MB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ACCIT_MB
*  INTO TABLE @DATA(IT_ACCIT_MB2).
*--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_ACCIT_MB INDEX 1 INTO DATA(WA_ACCIT_MB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ACCIT_MB>-KOSTL = 1.
<ACCIT_MB>-AUFNR = 1.
<ACCIT_MB>-ANLN1 = 1.
<ACCIT_MB>-ANLN2 = 1.
<ACCIT_MB>-ANBWA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ACCIT_MB-RMVCT, sy-vline,
  WA_ACCIT_MB-IMKEY, sy-vline,
  WA_ACCIT_MB-KSTRG, sy-vline,
  WA_ACCIT_MB-PAOBJNR, sy-vline,
  WA_ACCIT_MB-PS_PSP_PNR, sy-vline,
  WA_ACCIT_MB-NPLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ACCIT_MB 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_ACCIT_MB 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_ACCIT_MB INTO WA_ACCIT_MB.


*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_ACCIT_MB-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACCIT_MB-KOSTL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACCIT_MB-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACCIT_MB-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACCIT_MB-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACCIT_MB-ANLN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_ACCIT_MB-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACCIT_MB-IMKEY.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field SERVICE_DOC_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACCIT_MB-SERVICE_DOC_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACCIT_MB-SERVICE_DOC_ID.
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_ACCIT_MB_STR, 
KOSTL TYPE STRING,
AUFNR TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
ANBWA TYPE STRING,
RMVCT TYPE STRING,
IMKEY TYPE STRING,
KSTRG TYPE STRING,
PAOBJNR TYPE STRING,
PS_PSP_PNR TYPE STRING,
NPLNR TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
AUFPS TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
RECID TYPE STRING,
VPTNR TYPE STRING,
DUMMY_INCL_EEW_COBL TYPE STRING,
DABRZ TYPE STRING,
BEMOT TYPE STRING,
KOKRS TYPE STRING,
PRZNR TYPE STRING,
LSTAR TYPE STRING,
INTRENO TYPE STRING,
SERVICE_DOC_TYPE TYPE STRING,
SERVICE_DOC_ID TYPE STRING,
SERVICE_DOC_ITEM_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ACCIT_MB_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_ACCIT_MB_STR-KOSTL sy-vline 
WA_ACCIT_MB_STR-AUFNR sy-vline 
WA_ACCIT_MB_STR-ANLN1 sy-vline 
WA_ACCIT_MB_STR-ANLN2 sy-vline 
WA_ACCIT_MB_STR-ANBWA sy-vline 
WA_ACCIT_MB_STR-RMVCT sy-vline 
WA_ACCIT_MB_STR-IMKEY sy-vline 
WA_ACCIT_MB_STR-KSTRG sy-vline 
WA_ACCIT_MB_STR-PAOBJNR sy-vline 
WA_ACCIT_MB_STR-PS_PSP_PNR sy-vline 
WA_ACCIT_MB_STR-NPLNR sy-vline 
WA_ACCIT_MB_STR-AUFPL sy-vline 
WA_ACCIT_MB_STR-APLZL sy-vline 
WA_ACCIT_MB_STR-AUFPS sy-vline 
WA_ACCIT_MB_STR-KDAUF sy-vline 
WA_ACCIT_MB_STR-KDPOS sy-vline 
WA_ACCIT_MB_STR-RECID sy-vline 
WA_ACCIT_MB_STR-VPTNR sy-vline 
WA_ACCIT_MB_STR-DUMMY_INCL_EEW_COBL sy-vline 
WA_ACCIT_MB_STR-DABRZ sy-vline 
WA_ACCIT_MB_STR-BEMOT sy-vline 
WA_ACCIT_MB_STR-KOKRS sy-vline 
WA_ACCIT_MB_STR-PRZNR sy-vline 
WA_ACCIT_MB_STR-LSTAR sy-vline 
WA_ACCIT_MB_STR-INTRENO sy-vline 
WA_ACCIT_MB_STR-SERVICE_DOC_TYPE sy-vline 
WA_ACCIT_MB_STR-SERVICE_DOC_ID sy-vline 
WA_ACCIT_MB_STR-SERVICE_DOC_ITEM_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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