ABAP Select data from SAP table V_T7NZLL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T7NZLL 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_T7NZLL. 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_T7NZLL 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_T7NZLL TYPE STANDARD TABLE OF V_T7NZLL,
      WA_V_T7NZLL TYPE V_T7NZLL,
      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_T7NZLL> TYPE V_T7NZLL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T7NZLL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T7NZLL
  INTO TABLE IT_V_T7NZLL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T7NZLL
*  INTO TABLE @DATA(IT_V_T7NZLL2).
*--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_T7NZLL INDEX 1 INTO DATA(WA_V_T7NZLL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T7NZLL ASSIGNING <V_T7NZLL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T7NZLL>-MANDT = 1.
<V_T7NZLL>-MOLGA = 1.
<V_T7NZLL>-MOPGK = 1.
<V_T7NZLL>-MOZKO = 1.
<V_T7NZLL>-MOBDE = 1.

ENDLOOP.

LOOP AT IT_V_T7NZLL INTO WA_V_T7NZLL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T7NZLL-KTART, sy-vline,
  WA_V_T7NZLL-RULNO, sy-vline,
  WA_V_T7NZLL-SEQNR, sy-vline,
  WA_V_T7NZLL-ENDDA, sy-vline,
  WA_V_T7NZLL-BEGDA, sy-vline,
  WA_V_T7NZLL-INTNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T7NZLL 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_T7NZLL 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_T7NZLL INTO WA_V_T7NZLL.


*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_V_T7NZLL_STR, 
MANDT TYPE STRING,
MOLGA TYPE STRING,
MOPGK TYPE STRING,
MOZKO TYPE STRING,
MOBDE TYPE STRING,
KTART TYPE STRING,
RULNO TYPE STRING,
SEQNR TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
INTNR TYPE STRING,
RATET TYPE STRING,
ADJWT TYPE STRING,
PSHUT TYPE STRING,
PERC1 TYPE STRING,
PCABW TYPE STRING,
CABWT TYPE STRING,
GEAWT TYPE STRING,
LGTXT TYPE STRING,
KTEXT TYPE STRING,
PLBWT TYPE STRING,
CLBWT TYPE STRING,
CHKCL TYPE STRING,
LLTKN TYPE STRING,
ESNEG TYPE STRING,
TXTLL TYPE STRING,
TXTGE TYPE STRING,
TXTLV TYPE STRING,
TXTRL TYPE STRING,
LLDVB TYPE STRING,
ENTIL TYPE STRING,
ACCUR TYPE STRING,
FBOOK TYPE STRING,
DNRB TYPE STRING,
TXTLE TYPE STRING,
TXTLA TYPE STRING,
TXTFB TYPE STRING,
CLDWT TYPE STRING,
TXTCD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T7NZLL_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_T7NZLL_STR-MANDT sy-vline 
WA_V_T7NZLL_STR-MOLGA sy-vline 
WA_V_T7NZLL_STR-MOPGK sy-vline 
WA_V_T7NZLL_STR-MOZKO sy-vline 
WA_V_T7NZLL_STR-MOBDE sy-vline 
WA_V_T7NZLL_STR-KTART sy-vline 
WA_V_T7NZLL_STR-RULNO sy-vline 
WA_V_T7NZLL_STR-SEQNR sy-vline 
WA_V_T7NZLL_STR-ENDDA sy-vline 
WA_V_T7NZLL_STR-BEGDA sy-vline 
WA_V_T7NZLL_STR-INTNR sy-vline 
WA_V_T7NZLL_STR-RATET sy-vline 
WA_V_T7NZLL_STR-ADJWT sy-vline 
WA_V_T7NZLL_STR-PSHUT sy-vline 
WA_V_T7NZLL_STR-PERC1 sy-vline 
WA_V_T7NZLL_STR-PCABW sy-vline 
WA_V_T7NZLL_STR-CABWT sy-vline 
WA_V_T7NZLL_STR-GEAWT sy-vline 
WA_V_T7NZLL_STR-LGTXT sy-vline 
WA_V_T7NZLL_STR-KTEXT sy-vline 
WA_V_T7NZLL_STR-PLBWT sy-vline 
WA_V_T7NZLL_STR-CLBWT sy-vline 
WA_V_T7NZLL_STR-CHKCL sy-vline 
WA_V_T7NZLL_STR-LLTKN sy-vline 
WA_V_T7NZLL_STR-ESNEG sy-vline 
WA_V_T7NZLL_STR-TXTLL sy-vline 
WA_V_T7NZLL_STR-TXTGE sy-vline 
WA_V_T7NZLL_STR-TXTLV sy-vline 
WA_V_T7NZLL_STR-TXTRL sy-vline 
WA_V_T7NZLL_STR-LLDVB sy-vline 
WA_V_T7NZLL_STR-ENTIL sy-vline 
WA_V_T7NZLL_STR-ACCUR sy-vline 
WA_V_T7NZLL_STR-FBOOK sy-vline 
WA_V_T7NZLL_STR-DNRB sy-vline 
WA_V_T7NZLL_STR-TXTLE sy-vline 
WA_V_T7NZLL_STR-TXTLA sy-vline 
WA_V_T7NZLL_STR-TXTFB sy-vline 
WA_V_T7NZLL_STR-CLDWT sy-vline 
WA_V_T7NZLL_STR-TXTCD sy-vline      INTO ld_text SEPARATED BY SPACE.

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