ABAP Select data from SAP table SNWD_ARTIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SNWD_ARTIST
*  INTO TABLE @DATA(IT_SNWD_ARTIST2).
*--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_SNWD_ARTIST INDEX 1 INTO DATA(WA_SNWD_ARTIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SNWD_ARTIST>-CLIENT = 1.
<SNWD_ARTIST>-ARTISTUUID = 1.
<SNWD_ARTIST>-NAME = 1.
<SNWD_ARTIST>-COUNTRYOFORIGIN = 1.
<SNWD_ARTIST>-REGIONOFORIGIN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SNWD_ARTIST-FOUNDINGYEAR, sy-vline,
  WA_SNWD_ARTIST-BREAKUPYEAR, sy-vline,
  WA_SNWD_ARTIST-CREATEDAT, sy-vline,
  WA_SNWD_ARTIST-CREATEDBY, sy-vline,
  WA_SNWD_ARTIST-CHANGEDAT, sy-vline,
  WA_SNWD_ARTIST-CHANGEDBY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SNWD_ARTIST 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_SNWD_ARTIST 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_SNWD_ARTIST INTO WA_SNWD_ARTIST.


*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_SNWD_ARTIST_STR, 
CLIENT TYPE STRING,
ARTISTUUID TYPE STRING,
NAME TYPE STRING,
COUNTRYOFORIGIN TYPE STRING,
REGIONOFORIGIN TYPE STRING,
FOUNDINGYEAR TYPE STRING,
BREAKUPYEAR TYPE STRING,
CREATEDAT TYPE STRING,
CREATEDBY TYPE STRING,
CHANGEDAT TYPE STRING,
CHANGEDBY TYPE STRING,
GENDER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SNWD_ARTIST_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_SNWD_ARTIST_STR-CLIENT sy-vline 
WA_SNWD_ARTIST_STR-ARTISTUUID sy-vline 
WA_SNWD_ARTIST_STR-NAME sy-vline 
WA_SNWD_ARTIST_STR-COUNTRYOFORIGIN sy-vline 
WA_SNWD_ARTIST_STR-REGIONOFORIGIN sy-vline 
WA_SNWD_ARTIST_STR-FOUNDINGYEAR sy-vline 
WA_SNWD_ARTIST_STR-BREAKUPYEAR sy-vline 
WA_SNWD_ARTIST_STR-CREATEDAT sy-vline 
WA_SNWD_ARTIST_STR-CREATEDBY sy-vline 
WA_SNWD_ARTIST_STR-CHANGEDAT sy-vline 
WA_SNWD_ARTIST_STR-CHANGEDBY sy-vline 
WA_SNWD_ARTIST_STR-GENDER sy-vline      INTO ld_text SEPARATED BY SPACE.

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