ABAP Select data from SAP table RFVISUPPLY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFVISUPPLY
*  INTO TABLE @DATA(IT_RFVISUPPLY2).
*--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_RFVISUPPLY INDEX 1 INTO DATA(WA_RFVISUPPLY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFVISUPPLY>-MANDT = 1.
<RFVISUPPLY>-SIDGSUPPLY = 1.
<RFVISUPPLY>-RERF = 1.
<RFVISUPPLY>-DERF = 1.
<RFVISUPPLY>-TERF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFVISUPPLY-REHER, sy-vline,
  WA_RFVISUPPLY-RBEAR, sy-vline,
  WA_RFVISUPPLY-DBEAR, sy-vline,
  WA_RFVISUPPLY-TBEAR, sy-vline,
  WA_RFVISUPPLY-RBHER, sy-vline,
  WA_RFVISUPPLY-JDELETE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFVISUPPLY 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_RFVISUPPLY 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_RFVISUPPLY INTO WA_RFVISUPPLY.


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

*Conversion exit CUNIT, internal->external for field AREAKEY
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RFVISUPPLY-AREAKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVISUPPLY-AREAKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field YOBJBUILD
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RFVISUPPLY-YOBJBUILD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVISUPPLY-YOBJBUILD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field YOBJRSTOR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RFVISUPPLY-YOBJRSTOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVISUPPLY-YOBJRSTOR.
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_RFVISUPPLY_STR, 
MANDT TYPE STRING,
SIDGSUPPLY TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
JDELETE TYPE STRING,
SPARTID TYPE STRING,
SIDLSUPPLY TYPE STRING,
SOBJTYPE TYPE STRING,
JINTERNET TYPE STRING,
XEYECATCH TYPE STRING,
DFREEFROM TYPE STRING,
DFREETILL TYPE STRING,
CURRKEY TYPE STRING,
AREAKEY TYPE STRING,
SAQUISIT TYPE STRING,
PRENTEXCL TYPE STRING,
PRENTINCL TYPE STRING,
PRENTAREAEXCL TYPE STRING,
PRENTAREAINCL TYPE STRING,
PSIZEALL TYPE STRING,
PSIZEUSE TYPE STRING,
NROOMFULL TYPE STRING,
NROOMHALF TYPE STRING,
SFLOORNUM TYPE STRING,
SFLOORMAX TYPE STRING,
SFLOORCOD TYPE STRING,
SLOCALPOS TYPE STRING,
STRAFFROU TYPE STRING,
DBUILDDAT TYPE STRING,
DRSTORDAT TYPE STRING,
CFAFCODE TYPE STRING,
SPARKBAY TYPE STRING,
SPARKBAY2 TYPE STRING,
OCCUPOBLIGO TYPE STRING,
JWBSPREFERRED TYPE STRING,
SCOUNTRY TYPE STRING,
SREGIO TYPE STRING,
SCOUNC TYPE STRING,
SCITYC TYPE STRING,
ZIPCODE TYPE STRING,
LOCATION TYPE STRING,
SUBLOCAT TYPE STRING,
STREET TYPE STRING,
IMGDOCID01 TYPE STRING,
IMGDOCID02 TYPE STRING,
IMGDOCID03 TYPE STRING,
TXTDOCID TYPE STRING,
CHNGIND TYPE STRING,
JMARKED TYPE STRING,
PCORREL TYPE STRING,
JFAVORIT TYPE STRING,
JIMAGES TYPE STRING,
YOBJBUILD TYPE STRING,
YOBJRSTOR TYPE STRING,
XOBJTYPE TYPE STRING,
XADDRESS TYPE STRING,
XFLOORNUM TYPE STRING,
XFLOORMAX TYPE STRING,
XLOCALPOS TYPE STRING,
XTRAFFROU TYPE STRING,
XPARKBAY TYPE STRING,
XPARKBAY2 TYPE STRING,
XBELBIND TYPE STRING,
XROOMDATA TYPE STRING,
XFAVICON TYPE STRING,
XDELETE TYPE STRING,
XCHANGE TYPE STRING,
XSEARCH TYPE STRING,
XCHGIND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFVISUPPLY_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_RFVISUPPLY_STR-MANDT sy-vline 
WA_RFVISUPPLY_STR-SIDGSUPPLY sy-vline 
WA_RFVISUPPLY_STR-RERF sy-vline 
WA_RFVISUPPLY_STR-DERF sy-vline 
WA_RFVISUPPLY_STR-TERF sy-vline 
WA_RFVISUPPLY_STR-REHER sy-vline 
WA_RFVISUPPLY_STR-RBEAR sy-vline 
WA_RFVISUPPLY_STR-DBEAR sy-vline 
WA_RFVISUPPLY_STR-TBEAR sy-vline 
WA_RFVISUPPLY_STR-RBHER sy-vline 
WA_RFVISUPPLY_STR-JDELETE sy-vline 
WA_RFVISUPPLY_STR-SPARTID sy-vline 
WA_RFVISUPPLY_STR-SIDLSUPPLY sy-vline 
WA_RFVISUPPLY_STR-SOBJTYPE sy-vline 
WA_RFVISUPPLY_STR-JINTERNET sy-vline 
WA_RFVISUPPLY_STR-XEYECATCH sy-vline 
WA_RFVISUPPLY_STR-DFREEFROM sy-vline 
WA_RFVISUPPLY_STR-DFREETILL sy-vline 
WA_RFVISUPPLY_STR-CURRKEY sy-vline 
WA_RFVISUPPLY_STR-AREAKEY sy-vline 
WA_RFVISUPPLY_STR-SAQUISIT sy-vline 
WA_RFVISUPPLY_STR-PRENTEXCL sy-vline 
WA_RFVISUPPLY_STR-PRENTINCL sy-vline 
WA_RFVISUPPLY_STR-PRENTAREAEXCL sy-vline 
WA_RFVISUPPLY_STR-PRENTAREAINCL sy-vline 
WA_RFVISUPPLY_STR-PSIZEALL sy-vline 
WA_RFVISUPPLY_STR-PSIZEUSE sy-vline 
WA_RFVISUPPLY_STR-NROOMFULL sy-vline 
WA_RFVISUPPLY_STR-NROOMHALF sy-vline 
WA_RFVISUPPLY_STR-SFLOORNUM sy-vline 
WA_RFVISUPPLY_STR-SFLOORMAX sy-vline 
WA_RFVISUPPLY_STR-SFLOORCOD sy-vline 
WA_RFVISUPPLY_STR-SLOCALPOS sy-vline 
WA_RFVISUPPLY_STR-STRAFFROU sy-vline 
WA_RFVISUPPLY_STR-DBUILDDAT sy-vline 
WA_RFVISUPPLY_STR-DRSTORDAT sy-vline 
WA_RFVISUPPLY_STR-CFAFCODE sy-vline 
WA_RFVISUPPLY_STR-SPARKBAY sy-vline 
WA_RFVISUPPLY_STR-SPARKBAY2 sy-vline 
WA_RFVISUPPLY_STR-OCCUPOBLIGO sy-vline 
WA_RFVISUPPLY_STR-JWBSPREFERRED sy-vline 
WA_RFVISUPPLY_STR-SCOUNTRY sy-vline 
WA_RFVISUPPLY_STR-SREGIO sy-vline 
WA_RFVISUPPLY_STR-SCOUNC sy-vline 
WA_RFVISUPPLY_STR-SCITYC sy-vline 
WA_RFVISUPPLY_STR-ZIPCODE sy-vline 
WA_RFVISUPPLY_STR-LOCATION sy-vline 
WA_RFVISUPPLY_STR-SUBLOCAT sy-vline 
WA_RFVISUPPLY_STR-STREET sy-vline 
WA_RFVISUPPLY_STR-IMGDOCID01 sy-vline 
WA_RFVISUPPLY_STR-IMGDOCID02 sy-vline 
WA_RFVISUPPLY_STR-IMGDOCID03 sy-vline 
WA_RFVISUPPLY_STR-TXTDOCID sy-vline 
WA_RFVISUPPLY_STR-CHNGIND sy-vline 
WA_RFVISUPPLY_STR-JMARKED sy-vline 
WA_RFVISUPPLY_STR-PCORREL sy-vline 
WA_RFVISUPPLY_STR-JFAVORIT sy-vline 
WA_RFVISUPPLY_STR-JIMAGES sy-vline 
WA_RFVISUPPLY_STR-YOBJBUILD sy-vline 
WA_RFVISUPPLY_STR-YOBJRSTOR sy-vline 
WA_RFVISUPPLY_STR-XOBJTYPE sy-vline 
WA_RFVISUPPLY_STR-XADDRESS sy-vline 
WA_RFVISUPPLY_STR-XFLOORNUM sy-vline 
WA_RFVISUPPLY_STR-XFLOORMAX sy-vline 
WA_RFVISUPPLY_STR-XLOCALPOS sy-vline 
WA_RFVISUPPLY_STR-XTRAFFROU sy-vline 
WA_RFVISUPPLY_STR-XPARKBAY sy-vline 
WA_RFVISUPPLY_STR-XPARKBAY2 sy-vline 
WA_RFVISUPPLY_STR-XBELBIND sy-vline 
WA_RFVISUPPLY_STR-XROOMDATA sy-vline 
WA_RFVISUPPLY_STR-XFAVICON sy-vline 
WA_RFVISUPPLY_STR-XDELETE sy-vline 
WA_RFVISUPPLY_STR-XCHANGE sy-vline 
WA_RFVISUPPLY_STR-XSEARCH sy-vline 
WA_RFVISUPPLY_STR-XCHGIND sy-vline      INTO ld_text SEPARATED BY SPACE.

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