ABAP Select data from SAP table RN2AZ_VVO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN2AZ_VVO 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 RN2AZ_VVO. 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 RN2AZ_VVO 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_RN2AZ_VVO TYPE STANDARD TABLE OF RN2AZ_VVO,
      WA_RN2AZ_VVO TYPE RN2AZ_VVO,
      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: <RN2AZ_VVO> TYPE RN2AZ_VVO.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN2AZ_VVO.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN2AZ_VVO
  INTO TABLE IT_RN2AZ_VVO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN2AZ_VVO
*  INTO TABLE @DATA(IT_RN2AZ_VVO2).
*--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_RN2AZ_VVO INDEX 1 INTO DATA(WA_RN2AZ_VVO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN2AZ_VVO ASSIGNING <RN2AZ_VVO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN2AZ_VVO>-DOKAR = 1.
<RN2AZ_VVO>-DOKNR = 1.
<RN2AZ_VVO>-DOKVR = 1.
<RN2AZ_VVO>-DOKTL = 1.
<RN2AZ_VVO>-TEXT1 = 1.

ENDLOOP.

LOOP AT IT_RN2AZ_VVO INTO WA_RN2AZ_VVO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN2AZ_VVO-SEL_ID, sy-vline,
  WA_RN2AZ_VVO-SEL_AMOUNT, sy-vline,
  WA_RN2AZ_VVO-PACK_ID, sy-vline,
  WA_RN2AZ_VVO-DRUG_ID, sy-vline,
  WA_RN2AZ_VVO-TRADENAME_S, sy-vline,
  WA_RN2AZ_VVO-TRADENAME_L, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN2AZ_VVO 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_RN2AZ_VVO 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_RN2AZ_VVO INTO WA_RN2AZ_VVO.


*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 DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2AZ_VVO-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2AZ_VVO-DOKNR.
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_RN2AZ_VVO_STR, 
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
TEXT1 TYPE STRING,
SEL_ID TYPE STRING,
SEL_AMOUNT TYPE STRING,
PACK_ID TYPE STRING,
DRUG_ID TYPE STRING,
TRADENAME_S TYPE STRING,
TRADENAME_L TYPE STRING,
PF_ID TYPE STRING,
QUA TYPE STRING,
QU TYPE STRING,
F_PACKGROUP_TEXT TYPE STRING,
SALE_STATE_ICON TYPE STRING,
PRICE TYPE STRING,
F_PHIST_ICON TYPE STRING,
F_PRICE_CLASS_ICON TYPE STRING,
PRICE_EXTRA_PAY TYPE STRING,
F_PRICE_FIX_INDICATOR_ICON TYPE STRING,
PRICE_MORE_PAY TYPE STRING,
PRICE_ADD_PAY TYPE STRING,
F_DC_ICON TYPE STRING,
F_PRESCRIP_ICON TYPE STRING,
F_ARV_ICON TYPE STRING,
F_VOV_ICON TYPE STRING,
F_IMPORT_ICON TYPE STRING,
F_NEG_ICON TYPE STRING,
F_NARCOTIC_ICON TYPE STRING,
F_LIFESTYLE_ICON TYPE STRING,
PROD_NAME_S TYPE STRING,
PF_NAME TYPE STRING,
PRICE_FIX TYPE STRING,
PROD_ID TYPE STRING,
PROD_NAME_L TYPE STRING,
AUTIDEM_ID TYPE STRING,
PRICE_FIX_S TYPE STRING,
CHEMIST_DUTY_ICON TYPE STRING,
F_AGENT_ICON TYPE STRING,
F_TRANS_ICON TYPE STRING,
F_LOWCOST_ICON TYPE STRING,
F_OAP_ICON TYPE STRING,
F_DECREE_SGB_ICON TYPE STRING,
F_AGENT_PRICE_ICON TYPE STRING,
F_MEDPRODUCT TYPE STRING,
PACK_ID_SUCC TYPE STRING,
PACK_ID_ORG TYPE STRING,
AGENT_NAME TYPE STRING,
PRICE_FIX_TAB TYPE STRING,
TARGETPRICE TYPE STRING,
TARGETPRICE_TOLERANCE TYPE STRING,
TARGETCOSTS TYPE STRING,
TARGETCOSTS_TOLERANCE TYPE STRING,
PRICE_OLD TYPE STRING,
PRICE_CHANGE_DATE TYPE STRING,
PACK_ARV TYPE STRING,
KEY_VEB TYPE STRING,
RULES TYPE STRING,
F_PAY_FREE_ICON TYPE STRING,
T_REZEPT TYPE STRING,
OTC TYPE STRING,
DISCOUNT_130B TYPE STRING,
F_TERATOGEN_ICON TYPE STRING,
SEL_ANWH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN2AZ_VVO_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_RN2AZ_VVO_STR-DOKAR sy-vline 
WA_RN2AZ_VVO_STR-DOKNR sy-vline 
WA_RN2AZ_VVO_STR-DOKVR sy-vline 
WA_RN2AZ_VVO_STR-DOKTL sy-vline 
WA_RN2AZ_VVO_STR-TEXT1 sy-vline 
WA_RN2AZ_VVO_STR-SEL_ID sy-vline 
WA_RN2AZ_VVO_STR-SEL_AMOUNT sy-vline 
WA_RN2AZ_VVO_STR-PACK_ID sy-vline 
WA_RN2AZ_VVO_STR-DRUG_ID sy-vline 
WA_RN2AZ_VVO_STR-TRADENAME_S sy-vline 
WA_RN2AZ_VVO_STR-TRADENAME_L sy-vline 
WA_RN2AZ_VVO_STR-PF_ID sy-vline 
WA_RN2AZ_VVO_STR-QUA sy-vline 
WA_RN2AZ_VVO_STR-QU sy-vline 
WA_RN2AZ_VVO_STR-F_PACKGROUP_TEXT sy-vline 
WA_RN2AZ_VVO_STR-SALE_STATE_ICON sy-vline 
WA_RN2AZ_VVO_STR-PRICE sy-vline 
WA_RN2AZ_VVO_STR-F_PHIST_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_PRICE_CLASS_ICON sy-vline 
WA_RN2AZ_VVO_STR-PRICE_EXTRA_PAY sy-vline 
WA_RN2AZ_VVO_STR-F_PRICE_FIX_INDICATOR_ICON sy-vline 
WA_RN2AZ_VVO_STR-PRICE_MORE_PAY sy-vline 
WA_RN2AZ_VVO_STR-PRICE_ADD_PAY sy-vline 
WA_RN2AZ_VVO_STR-F_DC_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_PRESCRIP_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_ARV_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_VOV_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_IMPORT_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_NEG_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_NARCOTIC_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_LIFESTYLE_ICON sy-vline 
WA_RN2AZ_VVO_STR-PROD_NAME_S sy-vline 
WA_RN2AZ_VVO_STR-PF_NAME sy-vline 
WA_RN2AZ_VVO_STR-PRICE_FIX sy-vline 
WA_RN2AZ_VVO_STR-PROD_ID sy-vline 
WA_RN2AZ_VVO_STR-PROD_NAME_L sy-vline 
WA_RN2AZ_VVO_STR-AUTIDEM_ID sy-vline 
WA_RN2AZ_VVO_STR-PRICE_FIX_S sy-vline 
WA_RN2AZ_VVO_STR-CHEMIST_DUTY_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_AGENT_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_TRANS_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_LOWCOST_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_OAP_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_DECREE_SGB_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_AGENT_PRICE_ICON sy-vline 
WA_RN2AZ_VVO_STR-F_MEDPRODUCT sy-vline 
WA_RN2AZ_VVO_STR-PACK_ID_SUCC sy-vline 
WA_RN2AZ_VVO_STR-PACK_ID_ORG sy-vline 
WA_RN2AZ_VVO_STR-AGENT_NAME sy-vline 
WA_RN2AZ_VVO_STR-PRICE_FIX_TAB sy-vline 
WA_RN2AZ_VVO_STR-TARGETPRICE sy-vline 
WA_RN2AZ_VVO_STR-TARGETPRICE_TOLERANCE sy-vline 
WA_RN2AZ_VVO_STR-TARGETCOSTS sy-vline 
WA_RN2AZ_VVO_STR-TARGETCOSTS_TOLERANCE sy-vline 
WA_RN2AZ_VVO_STR-PRICE_OLD sy-vline 
WA_RN2AZ_VVO_STR-PRICE_CHANGE_DATE sy-vline 
WA_RN2AZ_VVO_STR-PACK_ARV sy-vline 
WA_RN2AZ_VVO_STR-KEY_VEB sy-vline 
WA_RN2AZ_VVO_STR-RULES sy-vline 
WA_RN2AZ_VVO_STR-F_PAY_FREE_ICON sy-vline 
WA_RN2AZ_VVO_STR-T_REZEPT sy-vline 
WA_RN2AZ_VVO_STR-OTC sy-vline 
WA_RN2AZ_VVO_STR-DISCOUNT_130B sy-vline 
WA_RN2AZ_VVO_STR-F_TERATOGEN_ICON sy-vline 
WA_RN2AZ_VVO_STR-SEL_ANWH sy-vline      INTO ld_text SEPARATED BY SPACE.

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