ABAP Select data from SAP table VV_162_L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VV_162_L 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 VV_162_L. 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 VV_162_L 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_VV_162_L TYPE STANDARD TABLE OF VV_162_L,
      WA_VV_162_L TYPE VV_162_L,
      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: <VV_162_L> TYPE VV_162_L.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VV_162_L.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VV_162_L
  INTO TABLE IT_VV_162_L.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VV_162_L
*  INTO TABLE @DATA(IT_VV_162_L2).
*--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_VV_162_L INDEX 1 INTO DATA(WA_VV_162_L2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VV_162_L ASSIGNING <VV_162_L>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VV_162_L>-MANDT = 1.
<VV_162_L>-FLREF = 1.
<VV_162_L>-FAUS1 = 1.
<VV_162_L>-FAUS2 = 1.
<VV_162_L>-FAUS3 = 1.

ENDLOOP.

LOOP AT IT_VV_162_L INTO WA_VV_162_L.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VV_162_L-FAUS4, sy-vline,
  WA_VV_162_L-FAUS5, sy-vline,
  WA_VV_162_L-FAUS6, sy-vline,
  WA_VV_162_L-FAUS7, sy-vline,
  WA_VV_162_L-BSTYP, sy-vline,
  WA_VV_162_L-FLRTX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VV_162_L 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_VV_162_L 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_VV_162_L INTO WA_VV_162_L.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_VV_162_L_STR, 
MANDT TYPE STRING,
FLREF TYPE STRING,
FAUS1 TYPE STRING,
FAUS2 TYPE STRING,
FAUS3 TYPE STRING,
FAUS4 TYPE STRING,
FAUS5 TYPE STRING,
FAUS6 TYPE STRING,
FAUS7 TYPE STRING,
BSTYP TYPE STRING,
FLRTX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VV_162_L_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_VV_162_L_STR-MANDT sy-vline 
WA_VV_162_L_STR-FLREF sy-vline 
WA_VV_162_L_STR-FAUS1 sy-vline 
WA_VV_162_L_STR-FAUS2 sy-vline 
WA_VV_162_L_STR-FAUS3 sy-vline 
WA_VV_162_L_STR-FAUS4 sy-vline 
WA_VV_162_L_STR-FAUS5 sy-vline 
WA_VV_162_L_STR-FAUS6 sy-vline 
WA_VV_162_L_STR-FAUS7 sy-vline 
WA_VV_162_L_STR-BSTYP sy-vline 
WA_VV_162_L_STR-FLRTX sy-vline      INTO ld_text SEPARATED BY SPACE.

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