ABAP Select data from SAP table VIGWSRAMEZU into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIGWSRAMEZU
*  INTO TABLE @DATA(IT_VIGWSRAMEZU2).
*--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_VIGWSRAMEZU INDEX 1 INTO DATA(WA_VIGWSRAMEZU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIGWSRAMEZU>-SMENR = 1.
<VIGWSRAMEZU>-XMETXT = 1.
<VIGWSRAMEZU>-INTRENO2 = 1.
<VIGWSRAMEZU>-INTRENO = 1.
<VIGWSRAMEZU>-DGUELAB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIGWSRAMEZU-DGUELBIS, sy-vline,
  WA_VIGWSRAMEZU-XMARK, sy-vline,
  WA_VIGWSRAMEZU-FLID, sy-vline,
  WA_VIGWSRAMEZU-SNUNR, sy-vline,
  WA_VIGWSRAMEZU-XNUMBEZ, sy-vline,
  WA_VIGWSRAMEZU-XNUKBEZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIGWSRAMEZU 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_VIGWSRAMEZU 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_VIGWSRAMEZU INTO WA_VIGWSRAMEZU.


*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 SMENR, internal->external for field SMENR
CALL FUNCTION 'CONVERSION_EXIT_SMENR_OUTPUT'
  EXPORTING
    input =                      WA_VIGWSRAMEZU-SMENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIGWSRAMEZU-SMENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GNMZEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VIGWSRAMEZU-GNMZEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIGWSRAMEZU-GNMZEH.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit SGENR, internal->external for field SGENR
CALL FUNCTION 'CONVERSION_EXIT_SGENR_OUTPUT'
  EXPORTING
    input =                      WA_VIGWSRAMEZU-SGENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIGWSRAMEZU-SGENR.
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_VIGWSRAMEZU_STR, 
SMENR TYPE STRING,
XMETXT TYPE STRING,
INTRENO2 TYPE STRING,
INTRENO TYPE STRING,
DGUELAB TYPE STRING,
DGUELBIS TYPE STRING,
XMARK TYPE STRING,
FLID TYPE STRING,
SNUNR TYPE STRING,
XNUMBEZ TYPE STRING,
XNUKBEZ TYPE STRING,
GFLNMZ TYPE STRING,
GNMZEH TYPE STRING,
SWENR TYPE STRING,
XWETEXT TYPE STRING,
SGENR TYPE STRING,
XGETXT TYPE STRING,
FLG_LME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIGWSRAMEZU_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_VIGWSRAMEZU_STR-SMENR sy-vline 
WA_VIGWSRAMEZU_STR-XMETXT sy-vline 
WA_VIGWSRAMEZU_STR-INTRENO2 sy-vline 
WA_VIGWSRAMEZU_STR-INTRENO sy-vline 
WA_VIGWSRAMEZU_STR-DGUELAB sy-vline 
WA_VIGWSRAMEZU_STR-DGUELBIS sy-vline 
WA_VIGWSRAMEZU_STR-XMARK sy-vline 
WA_VIGWSRAMEZU_STR-FLID sy-vline 
WA_VIGWSRAMEZU_STR-SNUNR sy-vline 
WA_VIGWSRAMEZU_STR-XNUMBEZ sy-vline 
WA_VIGWSRAMEZU_STR-XNUKBEZ sy-vline 
WA_VIGWSRAMEZU_STR-GFLNMZ sy-vline 
WA_VIGWSRAMEZU_STR-GNMZEH sy-vline 
WA_VIGWSRAMEZU_STR-SWENR sy-vline 
WA_VIGWSRAMEZU_STR-XWETEXT sy-vline 
WA_VIGWSRAMEZU_STR-SGENR sy-vline 
WA_VIGWSRAMEZU_STR-XGETXT sy-vline 
WA_VIGWSRAMEZU_STR-FLG_LME sy-vline      INTO ld_text SEPARATED BY SPACE.

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