ABAP Select data from SAP table VEVWR_S_LOAD_VIEWER_SINGLE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VEVWR_S_LOAD_VIEWER_SINGLE
*  INTO TABLE @DATA(IT_VEVWR_S_LOAD_VIEWER_SINGLE2).
*--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_VEVWR_S_LOAD_VIEWER_SINGLE INDEX 1 INTO DATA(WA_VEVWR_S_LOAD_VIEWER_SINGLE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VEVWR_S_LOAD_VIEWER_SINGLE>-OBJ_ID = 1.
<VEVWR_S_LOAD_VIEWER_SINGLE>-NAME = 1.
<VEVWR_S_LOAD_VIEWER_SINGLE>-FILEPATH = 1.
<VEVWR_S_LOAD_VIEWER_SINGLE>-CREATE_LAYER = 1.
<VEVWR_S_LOAD_VIEWER_SINGLE>-LANGUAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VEVWR_S_LOAD_VIEWER_SINGLE-USER_NAME, sy-vline,
  WA_VEVWR_S_LOAD_VIEWER_SINGLE-ID_FIELD, sy-vline,
  WA_VEVWR_S_LOAD_VIEWER_SINGLE-SAP_VISUALIZATION, sy-vline,
  WA_VEVWR_S_LOAD_VIEWER_SINGLE-SINGLE_SELECTION, sy-vline,
  WA_VEVWR_S_LOAD_VIEWER_SINGLE-DEACTIVATE_REDLINING, sy-vline,
  WA_VEVWR_S_LOAD_VIEWER_SINGLE-VISUAL_INDEX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VEVWR_S_LOAD_VIEWER_SINGLE 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_VEVWR_S_LOAD_VIEWER_SINGLE 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_VEVWR_S_LOAD_VIEWER_SINGLE INTO WA_VEVWR_S_LOAD_VIEWER_SINGLE.


*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_VEVWR_S_LOAD_VIEWER_SINGLE_STR, 
OBJ_ID TYPE STRING,
NAME TYPE STRING,
FILEPATH TYPE STRING,
CREATE_LAYER TYPE STRING,
LANGUAGE TYPE STRING,
USER_NAME TYPE STRING,
ID_FIELD TYPE STRING,
SAP_VISUALIZATION TYPE STRING,
SINGLE_SELECTION TYPE STRING,
DEACTIVATE_REDLINING TYPE STRING,
VISUAL_INDEX TYPE STRING,
ACTIVATE_FIRST_MODEL_VIEW TYPE STRING,
VARIANT TYPE STRING,
ADDITIONAL_FILES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VEVWR_S_LOAD_VIEWER_SINGLE_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_VEVWR_S_LOAD_VIEWER_SINGLE_STR-OBJ_ID sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-NAME sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-FILEPATH sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-CREATE_LAYER sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-LANGUAGE sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-USER_NAME sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-ID_FIELD sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-SAP_VISUALIZATION sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-SINGLE_SELECTION sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-DEACTIVATE_REDLINING sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-VISUAL_INDEX sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-ACTIVATE_FIRST_MODEL_VIEW sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-VARIANT sy-vline 
WA_VEVWR_S_LOAD_VIEWER_SINGLE_STR-ADDITIONAL_FILES sy-vline      INTO ld_text SEPARATED BY SPACE.

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