ABAP Select data from SAP table GRPC_S_DOCUMENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GRPC_S_DOCUMENT
*  INTO TABLE @DATA(IT_GRPC_S_DOCUMENT2).
*--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_GRPC_S_DOCUMENT INDEX 1 INTO DATA(WA_GRPC_S_DOCUMENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GRPC_S_DOCUMENT>-DOCUMENT_ID = 1.
<GRPC_S_DOCUMENT>-DOCUMENT_DESCR = 1.
<GRPC_S_DOCUMENT>-OBJECT_ID = 1.
<GRPC_S_DOCUMENT>-CREATED_BY = 1.
<GRPC_S_DOCUMENT>-CREATED_USER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GRPC_S_DOCUMENT-CREATED_DATE, sy-vline,
  WA_GRPC_S_DOCUMENT-CREATED_TIME, sy-vline,
  WA_GRPC_S_DOCUMENT-MODIFIED_BY, sy-vline,
  WA_GRPC_S_DOCUMENT-MODIFIED_USER, sy-vline,
  WA_GRPC_S_DOCUMENT-MODIFIED_DATE, sy-vline,
  WA_GRPC_S_DOCUMENT-MODIFIED_TIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GRPC_S_DOCUMENT 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_GRPC_S_DOCUMENT 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_GRPC_S_DOCUMENT INTO WA_GRPC_S_DOCUMENT.


*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 ISOLA, internal->external for field ORIGINAL_LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_GRPC_S_DOCUMENT-ORIGINAL_LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GRPC_S_DOCUMENT-ORIGINAL_LANGUAGE.
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_GRPC_S_DOCUMENT_STR, 
DOCUMENT_ID TYPE STRING,
DOCUMENT_DESCR TYPE STRING,
OBJECT_ID TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_USER TYPE STRING,
CREATED_DATE TYPE STRING,
CREATED_TIME TYPE STRING,
MODIFIED_BY TYPE STRING,
MODIFIED_USER TYPE STRING,
MODIFIED_DATE TYPE STRING,
MODIFIED_TIME TYPE STRING,
DOWNLOAD_URL TYPE STRING,
DOWNLOAD_URL_TXT TYPE STRING,
DOC_CLASS TYPE STRING,
DOC_CATEGORY TYPE STRING,
DOC_ACCESS TYPE STRING,
DOC_ORIGIN TYPE STRING,
DOC_OWNER_TEXT TYPE STRING,
CONTENT_MIMETYPE TYPE STRING,
CONTENT_SIZE TYPE STRING,
CONTENT_SIZE_DET TYPE STRING,
ORIGINAL_LANGUAGE TYPE STRING,
CONTENT_UPL_NAME TYPE STRING,
VERSION_NR TYPE STRING,
ADDED_ON TYPE STRING,
MODIFY_ON TYPE STRING,
LAN_TEXT TYPE STRING,
ICON_SOURCE TYPE STRING,
CELL_VARIANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GRPC_S_DOCUMENT_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_GRPC_S_DOCUMENT_STR-DOCUMENT_ID sy-vline 
WA_GRPC_S_DOCUMENT_STR-DOCUMENT_DESCR sy-vline 
WA_GRPC_S_DOCUMENT_STR-OBJECT_ID sy-vline 
WA_GRPC_S_DOCUMENT_STR-CREATED_BY sy-vline 
WA_GRPC_S_DOCUMENT_STR-CREATED_USER sy-vline 
WA_GRPC_S_DOCUMENT_STR-CREATED_DATE sy-vline 
WA_GRPC_S_DOCUMENT_STR-CREATED_TIME sy-vline 
WA_GRPC_S_DOCUMENT_STR-MODIFIED_BY sy-vline 
WA_GRPC_S_DOCUMENT_STR-MODIFIED_USER sy-vline 
WA_GRPC_S_DOCUMENT_STR-MODIFIED_DATE sy-vline 
WA_GRPC_S_DOCUMENT_STR-MODIFIED_TIME sy-vline 
WA_GRPC_S_DOCUMENT_STR-DOWNLOAD_URL sy-vline 
WA_GRPC_S_DOCUMENT_STR-DOWNLOAD_URL_TXT sy-vline 
WA_GRPC_S_DOCUMENT_STR-DOC_CLASS sy-vline 
WA_GRPC_S_DOCUMENT_STR-DOC_CATEGORY sy-vline 
WA_GRPC_S_DOCUMENT_STR-DOC_ACCESS sy-vline 
WA_GRPC_S_DOCUMENT_STR-DOC_ORIGIN sy-vline 
WA_GRPC_S_DOCUMENT_STR-DOC_OWNER_TEXT sy-vline 
WA_GRPC_S_DOCUMENT_STR-CONTENT_MIMETYPE sy-vline 
WA_GRPC_S_DOCUMENT_STR-CONTENT_SIZE sy-vline 
WA_GRPC_S_DOCUMENT_STR-CONTENT_SIZE_DET sy-vline 
WA_GRPC_S_DOCUMENT_STR-ORIGINAL_LANGUAGE sy-vline 
WA_GRPC_S_DOCUMENT_STR-CONTENT_UPL_NAME sy-vline 
WA_GRPC_S_DOCUMENT_STR-VERSION_NR sy-vline 
WA_GRPC_S_DOCUMENT_STR-ADDED_ON sy-vline 
WA_GRPC_S_DOCUMENT_STR-MODIFY_ON sy-vline 
WA_GRPC_S_DOCUMENT_STR-LAN_TEXT sy-vline 
WA_GRPC_S_DOCUMENT_STR-ICON_SOURCE sy-vline 
WA_GRPC_S_DOCUMENT_STR-CELL_VARIANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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