ABAP Select data from SAP table VVISCSUPGREL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VVISCSUPGREL
*  INTO TABLE @DATA(IT_VVISCSUPGREL2).
*--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_VVISCSUPGREL INDEX 1 INTO DATA(WA_VVISCSUPGREL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VVISCSUPGREL>-MANDT = 1.
<VVISCSUPGREL>-INTRENO = 1.
<VVISCSUPGREL>-INTRENOSRC = 1.
<VVISCSUPGREL>-INTRENOTRG = 1.
<VVISCSUPGREL>-VALIDTO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VVISCSUPGREL-PG_INTRENO, sy-vline,
  WA_VVISCSUPGREL-BUKRS, sy-vline,
  WA_VVISCSUPGREL-SWENR, sy-vline,
  WA_VVISCSUPGREL-SNKSL, sy-vline,
  WA_VVISCSUPGREL-SEMPSL, sy-vline,
  WA_VVISCSUPGREL-OBJNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VVISCSUPGREL 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_VVISCSUPGREL 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_VVISCSUPGREL INTO WA_VVISCSUPGREL.


*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 REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_VVISCSUPGREL-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVISCSUPGREL-VALIDTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SWENR, internal->external for field SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_VVISCSUPGREL-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVISCSUPGREL-SWENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SNKSL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VVISCSUPGREL-SNKSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVISCSUPGREL-SNKSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEMPSL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VVISCSUPGREL-SEMPSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVISCSUPGREL-SEMPSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_VVISCSUPGREL-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVISCSUPGREL-IMKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SWENR, internal->external for field PG_SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_VVISCSUPGREL-PG_SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVISCSUPGREL-PG_SWENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PG_PGID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VVISCSUPGREL-PG_PGID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VVISCSUPGREL-PG_PGID.
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_VVISCSUPGREL_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
INTRENOSRC TYPE STRING,
INTRENOTRG TYPE STRING,
VALIDTO TYPE STRING,
PG_INTRENO TYPE STRING,
BUKRS TYPE STRING,
SWENR TYPE STRING,
SNKSL TYPE STRING,
SEMPSL TYPE STRING,
OBJNR TYPE STRING,
IMKEY TYPE STRING,
RESPONSIBLE TYPE STRING,
SUTYPE TYPE STRING,
XSU TYPE STRING,
PG_BUKRS TYPE STRING,
PG_SWENR TYPE STRING,
PG_PGID TYPE STRING,
PG_XPG TYPE STRING,
PG_RESPONSIBLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VVISCSUPGREL_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_VVISCSUPGREL_STR-MANDT sy-vline 
WA_VVISCSUPGREL_STR-INTRENO sy-vline 
WA_VVISCSUPGREL_STR-INTRENOSRC sy-vline 
WA_VVISCSUPGREL_STR-INTRENOTRG sy-vline 
WA_VVISCSUPGREL_STR-VALIDTO sy-vline 
WA_VVISCSUPGREL_STR-PG_INTRENO sy-vline 
WA_VVISCSUPGREL_STR-BUKRS sy-vline 
WA_VVISCSUPGREL_STR-SWENR sy-vline 
WA_VVISCSUPGREL_STR-SNKSL sy-vline 
WA_VVISCSUPGREL_STR-SEMPSL sy-vline 
WA_VVISCSUPGREL_STR-OBJNR sy-vline 
WA_VVISCSUPGREL_STR-IMKEY sy-vline 
WA_VVISCSUPGREL_STR-RESPONSIBLE sy-vline 
WA_VVISCSUPGREL_STR-SUTYPE sy-vline 
WA_VVISCSUPGREL_STR-XSU sy-vline 
WA_VVISCSUPGREL_STR-PG_BUKRS sy-vline 
WA_VVISCSUPGREL_STR-PG_SWENR sy-vline 
WA_VVISCSUPGREL_STR-PG_PGID sy-vline 
WA_VVISCSUPGREL_STR-PG_XPG sy-vline 
WA_VVISCSUPGREL_STR-PG_RESPONSIBLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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