ABAP Select data from SAP table V_7CN0P_SI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_7CN0P_SI 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_7CN0P_SI. 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_7CN0P_SI 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_7CN0P_SI TYPE STANDARD TABLE OF V_7CN0P_SI,
      WA_V_7CN0P_SI TYPE V_7CN0P_SI,
      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_7CN0P_SI> TYPE V_7CN0P_SI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_7CN0P_SI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_7CN0P_SI
  INTO TABLE IT_V_7CN0P_SI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_7CN0P_SI
*  INTO TABLE @DATA(IT_V_7CN0P_SI2).
*--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_7CN0P_SI INDEX 1 INTO DATA(WA_V_7CN0P_SI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_7CN0P_SI ASSIGNING <V_7CN0P_SI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_7CN0P_SI>-MANDT = 1.
<V_7CN0P_SI>-WERKS = 1.
<V_7CN0P_SI>-BTRTL = 1.
<V_7CN0P_SI>-BTEXT = 1.
<V_7CN0P_SI>-MOLGA = 1.

ENDLOOP.

LOOP AT IT_V_7CN0P_SI INTO WA_V_7CN0P_SI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_7CN0P_SI-PSIAU, sy-vline,
  WA_V_7CN0P_SI-ENTPI, sy-vline,
  WA_V_7CN0P_SI-USIAU, sy-vline,
  WA_V_7CN0P_SI-ENTUI, sy-vline,
  WA_V_7CN0P_SI-MSIAU, sy-vline,
  WA_V_7CN0P_SI-ENTMI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_7CN0P_SI 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_7CN0P_SI 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_7CN0P_SI INTO WA_V_7CN0P_SI.


*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_7CN0P_SI_STR, 
MANDT TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
BTEXT TYPE STRING,
MOLGA TYPE STRING,
PSIAU TYPE STRING,
ENTPI TYPE STRING,
USIAU TYPE STRING,
ENTUI TYPE STRING,
MSIAU TYPE STRING,
ENTMI TYPE STRING,
ISIAU TYPE STRING,
ENTII TYPE STRING,
BSIAU TYPE STRING,
ENTBI TYPE STRING,
PIAUN TYPE STRING,
UIAUN TYPE STRING,
MIAUN TYPE STRING,
IIAUN TYPE STRING,
BIAUN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_7CN0P_SI_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_7CN0P_SI_STR-MANDT sy-vline 
WA_V_7CN0P_SI_STR-WERKS sy-vline 
WA_V_7CN0P_SI_STR-BTRTL sy-vline 
WA_V_7CN0P_SI_STR-BTEXT sy-vline 
WA_V_7CN0P_SI_STR-MOLGA sy-vline 
WA_V_7CN0P_SI_STR-PSIAU sy-vline 
WA_V_7CN0P_SI_STR-ENTPI sy-vline 
WA_V_7CN0P_SI_STR-USIAU sy-vline 
WA_V_7CN0P_SI_STR-ENTUI sy-vline 
WA_V_7CN0P_SI_STR-MSIAU sy-vline 
WA_V_7CN0P_SI_STR-ENTMI sy-vline 
WA_V_7CN0P_SI_STR-ISIAU sy-vline 
WA_V_7CN0P_SI_STR-ENTII sy-vline 
WA_V_7CN0P_SI_STR-BSIAU sy-vline 
WA_V_7CN0P_SI_STR-ENTBI sy-vline 
WA_V_7CN0P_SI_STR-PIAUN sy-vline 
WA_V_7CN0P_SI_STR-UIAUN sy-vline 
WA_V_7CN0P_SI_STR-MIAUN sy-vline 
WA_V_7CN0P_SI_STR-IIAUN sy-vline 
WA_V_7CN0P_SI_STR-BIAUN sy-vline      INTO ld_text SEPARATED BY SPACE.

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