ABAP Select data from SAP table V_T620 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T620 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_T620. 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_T620 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_T620 TYPE STANDARD TABLE OF V_T620,
      WA_V_T620 TYPE V_T620,
      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_T620> TYPE V_T620.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T620.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T620
  INTO TABLE IT_V_T620.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T620
*  INTO TABLE @DATA(IT_V_T6202).
*--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_T620 INDEX 1 INTO DATA(WA_V_T6202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T620 ASSIGNING <V_T620>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T620>-MANDT = 1.
<V_T620>-AUFAR = 1.
<V_T620>-AUFTX = 1.
<V_T620>-PINCR = 1.
<V_T620>-NUMKI = 1.

ENDLOOP.

LOOP AT IT_V_T620 INTO WA_V_T620.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T620-NUMKE, sy-vline,
  WA_V_T620-KOGRP, sy-vline,
  WA_V_T620-APSTP, sy-vline,
  WA_V_T620-CPSTP, sy-vline,
  WA_V_T620-FPSTP, sy-vline,
  WA_V_T620-LISTG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T620 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_T620 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_T620 INTO WA_V_T620.


*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_T620_STR, 
MANDT TYPE STRING,
AUFAR TYPE STRING,
AUFTX TYPE STRING,
PINCR TYPE STRING,
NUMKI TYPE STRING,
NUMKE TYPE STRING,
KOGRP TYPE STRING,
APSTP TYPE STRING,
CPSTP TYPE STRING,
FPSTP TYPE STRING,
LISTG TYPE STRING,
RUNDG TYPE STRING,
RESTV TYPE STRING,
DATYP TYPE STRING,
ASTRA TYPE STRING,
FCPOS TYPE STRING,
FCFGR TYPE STRING,
AAVIT TYPE STRING,
KSAVI TYPE STRING,
KAPPL TYPE STRING,
KSCHL TYPE STRING,
APRUE TYPE STRING,
FCWRK TYPE STRING,
BSTANZ TYPE STRING,
EKORGABW TYPE STRING,
RETPO TYPE STRING,
BERMIMA TYPE STRING,
SA_VERF TYPE STRING,
SA_MATNAUT TYPE STRING,
NF_IM_VB TYPE STRING,
NF_NUR_1_MAL TYPE STRING,
NREMFIN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T620_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_T620_STR-MANDT sy-vline 
WA_V_T620_STR-AUFAR sy-vline 
WA_V_T620_STR-AUFTX sy-vline 
WA_V_T620_STR-PINCR sy-vline 
WA_V_T620_STR-NUMKI sy-vline 
WA_V_T620_STR-NUMKE sy-vline 
WA_V_T620_STR-KOGRP sy-vline 
WA_V_T620_STR-APSTP sy-vline 
WA_V_T620_STR-CPSTP sy-vline 
WA_V_T620_STR-FPSTP sy-vline 
WA_V_T620_STR-LISTG sy-vline 
WA_V_T620_STR-RUNDG sy-vline 
WA_V_T620_STR-RESTV sy-vline 
WA_V_T620_STR-DATYP sy-vline 
WA_V_T620_STR-ASTRA sy-vline 
WA_V_T620_STR-FCPOS sy-vline 
WA_V_T620_STR-FCFGR sy-vline 
WA_V_T620_STR-AAVIT sy-vline 
WA_V_T620_STR-KSAVI sy-vline 
WA_V_T620_STR-KAPPL sy-vline 
WA_V_T620_STR-KSCHL sy-vline 
WA_V_T620_STR-APRUE sy-vline 
WA_V_T620_STR-FCWRK sy-vline 
WA_V_T620_STR-BSTANZ sy-vline 
WA_V_T620_STR-EKORGABW sy-vline 
WA_V_T620_STR-RETPO sy-vline 
WA_V_T620_STR-BERMIMA sy-vline 
WA_V_T620_STR-SA_VERF sy-vline 
WA_V_T620_STR-SA_MATNAUT sy-vline 
WA_V_T620_STR-NF_IM_VB sy-vline 
WA_V_T620_STR-NF_NUR_1_MAL sy-vline 
WA_V_T620_STR-NREMFIN sy-vline      INTO ld_text SEPARATED BY SPACE.

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