ABAP Select data from SAP table /ISHFR/RNB2_ACCOMP_POS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ISHFR/RNB2_ACCOMP_POS 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 /ISHFR/RNB2_ACCOMP_POS. 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 /ISHFR/RNB2_ACCOMP_POS 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_/ISHFR/RNB2_ACCOMP_POS TYPE STANDARD TABLE OF /ISHFR/RNB2_ACCOMP_POS,
      WA_/ISHFR/RNB2_ACCOMP_POS TYPE /ISHFR/RNB2_ACCOMP_POS,
      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: </ISHFR/RNB2_ACCOMP_POS> TYPE /ISHFR/RNB2_ACCOMP_POS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/ISHFR/RNB2_ACCOMP_POS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ISHFR/RNB2_ACCOMP_POS
  INTO TABLE IT_/ISHFR/RNB2_ACCOMP_POS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ISHFR/RNB2_ACCOMP_POS
*  INTO TABLE @DATA(IT_/ISHFR/RNB2_ACCOMP_POS2).
*--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_/ISHFR/RNB2_ACCOMP_POS INDEX 1 INTO DATA(WA_/ISHFR/RNB2_ACCOMP_POS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ISHFR/RNB2_ACCOMP_POS ASSIGNING </ISHFR/RNB2_ACCOMP_POS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ISHFR/RNB2_ACCOMP_POS>-LF301D = 1.
</ISHFR/RNB2_ACCOMP_POS>-GROUPNR = 1.
</ISHFR/RNB2_ACCOMP_POS>-NKROBJECT = 1.
</ISHFR/RNB2_ACCOMP_POS>-LF301 = 1.
</ISHFR/RNB2_ACCOMP_POS>-INVOICENR = 1.

ENDLOOP.

LOOP AT IT_/ISHFR/RNB2_ACCOMP_POS INTO WA_/ISHFR/RNB2_ACCOMP_POS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ISHFR/RNB2_ACCOMP_POS-SINR, sy-vline,
  WA_/ISHFR/RNB2_ACCOMP_POS-BIRTHDATE, sy-vline,
  WA_/ISHFR/RNB2_ACCOMP_POS-NPAT_GBDAT, sy-vline,
  WA_/ISHFR/RNB2_ACCOMP_POS-NPAT_NNAME, sy-vline,
  WA_/ISHFR/RNB2_ACCOMP_POS-NPAT_VNAME, sy-vline,
  WA_/ISHFR/RNB2_ACCOMP_POS-NCIR_VERNN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ISHFR/RNB2_ACCOMP_POS 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_/ISHFR/RNB2_ACCOMP_POS 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_/ISHFR/RNB2_ACCOMP_POS INTO WA_/ISHFR/RNB2_ACCOMP_POS.


*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 LF301D
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ISHFR/RNB2_ACCOMP_POS-LF301D
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISHFR/RNB2_ACCOMP_POS-LF301D.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LF301
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ISHFR/RNB2_ACCOMP_POS-LF301
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISHFR/RNB2_ACCOMP_POS-LF301.
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_/ISHFR/RNB2_ACCOMP_POS_STR, 
LF301D TYPE STRING,
GROUPNR TYPE STRING,
NKROBJECT TYPE STRING,
LF301 TYPE STRING,
INVOICENR TYPE STRING,
SINR TYPE STRING,
BIRTHDATE TYPE STRING,
NPAT_GBDAT TYPE STRING,
NPAT_NNAME TYPE STRING,
NPAT_VNAME TYPE STRING,
NCIR_VERNN TYPE STRING,
NCIR_VERVN TYPE STRING,
NCIR_VERGB TYPE STRING,
PATLNAME TYPE STRING,
PATFNAME TYPE STRING,
MINSLNAME TYPE STRING,
MINSFNAME TYPE STRING,
INS_NAME TYPE STRING,
TOTAMOUNT TYPE STRING,
TOTALFEE6 TYPE STRING,
COVAMOUNT3 TYPE STRING,
COVAMOUNT4 TYPE STRING,
CPLHSAMNT6 TYPE STRING,
CPLHNAMNT6 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ISHFR/RNB2_ACCOMP_POS_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_/ISHFR/RNB2_ACCOMP_POS_STR-LF301D sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-GROUPNR sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-NKROBJECT sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-LF301 sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-INVOICENR sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-SINR sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-BIRTHDATE sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-NPAT_GBDAT sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-NPAT_NNAME sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-NPAT_VNAME sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-NCIR_VERNN sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-NCIR_VERVN sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-NCIR_VERGB sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-PATLNAME sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-PATFNAME sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-MINSLNAME sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-MINSFNAME sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-INS_NAME sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-TOTAMOUNT sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-TOTALFEE6 sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-COVAMOUNT3 sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-COVAMOUNT4 sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-CPLHSAMNT6 sy-vline 
WA_/ISHFR/RNB2_ACCOMP_POS_STR-CPLHNAMNT6 sy-vline      INTO ld_text SEPARATED BY SPACE.

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