ABAP Select data from SAP table V_OLR3_AFVCMLST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_OLR3_AFVCMLST 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 V_OLR3_AFVCMLST. 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 V_OLR3_AFVCMLST 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_V_OLR3_AFVCMLST TYPE STANDARD TABLE OF V_OLR3_AFVCMLST,
      WA_V_OLR3_AFVCMLST TYPE V_OLR3_AFVCMLST,
      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: <V_OLR3_AFVCMLST> TYPE V_OLR3_AFVCMLST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_OLR3_AFVCMLST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_OLR3_AFVCMLST
  INTO TABLE IT_V_OLR3_AFVCMLST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_OLR3_AFVCMLST
*  INTO TABLE @DATA(IT_V_OLR3_AFVCMLST2).
*--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_V_OLR3_AFVCMLST INDEX 1 INTO DATA(WA_V_OLR3_AFVCMLST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_OLR3_AFVCMLST ASSIGNING <V_OLR3_AFVCMLST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_OLR3_AFVCMLST>-MANDT = 1.
<V_OLR3_AFVCMLST>-AUFNR = 1.
<V_OLR3_AFVCMLST>-MLST_ZAEHL = 1.
<V_OLR3_AFVCMLST>-KTEXT = 1.
<V_OLR3_AFVCMLST>-VORNR = 1.

ENDLOOP.

LOOP AT IT_V_OLR3_AFVCMLST INTO WA_V_OLR3_AFVCMLST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_OLR3_AFVCMLST-LTXA1, sy-vline,
  WA_V_OLR3_AFVCMLST-MLSTN, sy-vline,
  WA_V_OLR3_AFVCMLST-TEDAT, sy-vline,
  WA_V_OLR3_AFVCMLST-EDATU, sy-vline,
  WA_V_OLR3_AFVCMLST-PDATU, sy-vline,
  WA_V_OLR3_AFVCMLST-DLTAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_OLR3_AFVCMLST 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_V_OLR3_AFVCMLST 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_V_OLR3_AFVCMLST INTO WA_V_OLR3_AFVCMLST.


*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 AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_OLR3_AFVCMLST-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OLR3_AFVCMLST-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_V_OLR3_AFVCMLST-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OLR3_AFVCMLST-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DELTE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_OLR3_AFVCMLST-DELTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OLR3_AFVCMLST-DELTE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_V_OLR3_AFVCMLST-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OLR3_AFVCMLST-LANGU.
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_V_OLR3_AFVCMLST_STR, 
MANDT TYPE STRING,
AUFNR TYPE STRING,
MLST_ZAEHL TYPE STRING,
KTEXT TYPE STRING,
VORNR TYPE STRING,
LTXA1 TYPE STRING,
MLSTN TYPE STRING,
TEDAT TYPE STRING,
EDATU TYPE STRING,
PDATU TYPE STRING,
DLTAS TYPE STRING,
DELTA TYPE STRING,
DELTE TYPE STRING,
PRCNT TYPE STRING,
KZ_TREND TYPE STRING,
KZ_LSTWR TYPE STRING,
KZ_WFLOW TYPE STRING,
KZ_FAKTP TYPE STRING,
KZ_FRMST TYPE STRING,
LST_FERTG TYPE STRING,
LST_ACTDT TYPE STRING,
RELSU TYPE STRING,
RELMS TYPE STRING,
INCPN TYPE STRING,
INCNW TYPE STRING,
INCSN TYPE STRING,
FPROZ TYPE STRING,
LANGU TYPE STRING,
TETIM TYPE STRING,
EZEIT TYPE STRING,
LST_ACTTM TYPE STRING,
LATED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_OLR3_AFVCMLST_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_V_OLR3_AFVCMLST_STR-MANDT sy-vline 
WA_V_OLR3_AFVCMLST_STR-AUFNR sy-vline 
WA_V_OLR3_AFVCMLST_STR-MLST_ZAEHL sy-vline 
WA_V_OLR3_AFVCMLST_STR-KTEXT sy-vline 
WA_V_OLR3_AFVCMLST_STR-VORNR sy-vline 
WA_V_OLR3_AFVCMLST_STR-LTXA1 sy-vline 
WA_V_OLR3_AFVCMLST_STR-MLSTN sy-vline 
WA_V_OLR3_AFVCMLST_STR-TEDAT sy-vline 
WA_V_OLR3_AFVCMLST_STR-EDATU sy-vline 
WA_V_OLR3_AFVCMLST_STR-PDATU sy-vline 
WA_V_OLR3_AFVCMLST_STR-DLTAS sy-vline 
WA_V_OLR3_AFVCMLST_STR-DELTA sy-vline 
WA_V_OLR3_AFVCMLST_STR-DELTE sy-vline 
WA_V_OLR3_AFVCMLST_STR-PRCNT sy-vline 
WA_V_OLR3_AFVCMLST_STR-KZ_TREND sy-vline 
WA_V_OLR3_AFVCMLST_STR-KZ_LSTWR sy-vline 
WA_V_OLR3_AFVCMLST_STR-KZ_WFLOW sy-vline 
WA_V_OLR3_AFVCMLST_STR-KZ_FAKTP sy-vline 
WA_V_OLR3_AFVCMLST_STR-KZ_FRMST sy-vline 
WA_V_OLR3_AFVCMLST_STR-LST_FERTG sy-vline 
WA_V_OLR3_AFVCMLST_STR-LST_ACTDT sy-vline 
WA_V_OLR3_AFVCMLST_STR-RELSU sy-vline 
WA_V_OLR3_AFVCMLST_STR-RELMS sy-vline 
WA_V_OLR3_AFVCMLST_STR-INCPN sy-vline 
WA_V_OLR3_AFVCMLST_STR-INCNW sy-vline 
WA_V_OLR3_AFVCMLST_STR-INCSN sy-vline 
WA_V_OLR3_AFVCMLST_STR-FPROZ sy-vline 
WA_V_OLR3_AFVCMLST_STR-LANGU sy-vline 
WA_V_OLR3_AFVCMLST_STR-TETIM sy-vline 
WA_V_OLR3_AFVCMLST_STR-EZEIT sy-vline 
WA_V_OLR3_AFVCMLST_STR-LST_ACTTM sy-vline 
WA_V_OLR3_AFVCMLST_STR-LATED sy-vline      INTO ld_text SEPARATED BY SPACE.

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