ABAP Select data from SAP table ODATA_SLC_S_ATTACHMENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ODATA_SLC_S_ATTACHMENT
*  INTO TABLE @DATA(IT_ODATA_SLC_S_ATTACHMENT2).
*--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_ODATA_SLC_S_ATTACHMENT INDEX 1 INTO DATA(WA_ODATA_SLC_S_ATTACHMENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ODATA_SLC_S_ATTACHMENT>-MANDT = 1.
<ODATA_SLC_S_ATTACHMENT>-SUPLREVALATTCHDOCUMENTUUID = 1.
<ODATA_SLC_S_ATTACHMENT>-SUPLREVALATTACHMENTUUID = 1.
<ODATA_SLC_S_ATTACHMENT>-SUPLREVALREQQUESTIONUUID = 1.
<ODATA_SLC_S_ATTACHMENT>-REFERENCEDNODEUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ODATA_SLC_S_ATTACHMENT-MIMETYPE, sy-vline,
  WA_ODATA_SLC_S_ATTACHMENT-SUPLREVALATTACHMENTNAME, sy-vline,
  WA_ODATA_SLC_S_ATTACHMENT-SUPLREVALATTACHMENTTITLE, sy-vline,
  WA_ODATA_SLC_S_ATTACHMENT-FILESIZE, sy-vline,
  WA_ODATA_SLC_S_ATTACHMENT-SUPLREVALATTCHDOCUMENTCONTENT, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_ODATA_SLC_S_ATTACHMENT 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_ODATA_SLC_S_ATTACHMENT 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_ODATA_SLC_S_ATTACHMENT INTO WA_ODATA_SLC_S_ATTACHMENT.


*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_ODATA_SLC_S_ATTACHMENT_STR, 
MANDT TYPE STRING,
SUPLREVALATTCHDOCUMENTUUID TYPE STRING,
SUPLREVALATTACHMENTUUID TYPE STRING,
SUPLREVALREQQUESTIONUUID TYPE STRING,
REFERENCEDNODEUUID TYPE STRING,
MIMETYPE TYPE STRING,
SUPLREVALATTACHMENTNAME TYPE STRING,
SUPLREVALATTACHMENTTITLE TYPE STRING,
FILESIZE TYPE STRING,
SUPLREVALATTCHDOCUMENTCONTENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ODATA_SLC_S_ATTACHMENT_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_ODATA_SLC_S_ATTACHMENT_STR-MANDT sy-vline 
WA_ODATA_SLC_S_ATTACHMENT_STR-SUPLREVALATTCHDOCUMENTUUID sy-vline 
WA_ODATA_SLC_S_ATTACHMENT_STR-SUPLREVALATTACHMENTUUID sy-vline 
WA_ODATA_SLC_S_ATTACHMENT_STR-SUPLREVALREQQUESTIONUUID sy-vline 
WA_ODATA_SLC_S_ATTACHMENT_STR-REFERENCEDNODEUUID sy-vline 
WA_ODATA_SLC_S_ATTACHMENT_STR-MIMETYPE sy-vline 
WA_ODATA_SLC_S_ATTACHMENT_STR-SUPLREVALATTACHMENTNAME sy-vline 
WA_ODATA_SLC_S_ATTACHMENT_STR-SUPLREVALATTACHMENTTITLE sy-vline 
WA_ODATA_SLC_S_ATTACHMENT_STR-FILESIZE sy-vline 
WA_ODATA_SLC_S_ATTACHMENT_STR-SUPLREVALATTCHDOCUMENTCONTENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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