ABAP Select data from SAP table /RPM/TS_CD_OBJ_LINK_API into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /RPM/TS_CD_OBJ_LINK_API 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 /RPM/TS_CD_OBJ_LINK_API. 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 /RPM/TS_CD_OBJ_LINK_API 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_/RPM/TS_CD_OBJ_LINK_API TYPE STANDARD TABLE OF /RPM/TS_CD_OBJ_LINK_API,
      WA_/RPM/TS_CD_OBJ_LINK_API TYPE /RPM/TS_CD_OBJ_LINK_API,
      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: </RPM/TS_CD_OBJ_LINK_API> TYPE /RPM/TS_CD_OBJ_LINK_API.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /RPM/TS_CD_OBJ_LINK_API
  INTO TABLE IT_/RPM/TS_CD_OBJ_LINK_API.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /RPM/TS_CD_OBJ_LINK_API
*  INTO TABLE @DATA(IT_/RPM/TS_CD_OBJ_LINK_API2).
*--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_/RPM/TS_CD_OBJ_LINK_API INDEX 1 INTO DATA(WA_/RPM/TS_CD_OBJ_LINK_API2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/RPM/TS_CD_OBJ_LINK_API ASSIGNING </RPM/TS_CD_OBJ_LINK_API>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</RPM/TS_CD_OBJ_LINK_API>-CHANGE_DOCS_OBJ_LNK_ID = 1.
</RPM/TS_CD_OBJ_LINK_API>-OBJECTID = 1.
</RPM/TS_CD_OBJ_LINK_API>-CHANGENR = 1.
</RPM/TS_CD_OBJ_LINK_API>-USERNAME = 1.
</RPM/TS_CD_OBJ_LINK_API>-UDATE = 1.

ENDLOOP.

LOOP AT IT_/RPM/TS_CD_OBJ_LINK_API INTO WA_/RPM/TS_CD_OBJ_LINK_API.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/RPM/TS_CD_OBJ_LINK_API-UTIME, sy-vline,
  WA_/RPM/TS_CD_OBJ_LINK_API-TCODE, sy-vline,
  WA_/RPM/TS_CD_OBJ_LINK_API-TABNAME, sy-vline,
  WA_/RPM/TS_CD_OBJ_LINK_API-TABKEY, sy-vline,
  WA_/RPM/TS_CD_OBJ_LINK_API-KEYLEN, sy-vline,
  WA_/RPM/TS_CD_OBJ_LINK_API-CHNGIND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/RPM/TS_CD_OBJ_LINK_API 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_/RPM/TS_CD_OBJ_LINK_API 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_/RPM/TS_CD_OBJ_LINK_API INTO WA_/RPM/TS_CD_OBJ_LINK_API.


*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 ALPHA, internal->external for field CHANGENR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/RPM/TS_CD_OBJ_LINK_API-CHANGENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/RPM/TS_CD_OBJ_LINK_API-CHANGENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRACHE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/RPM/TS_CD_OBJ_LINK_API-SPRACHE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/RPM/TS_CD_OBJ_LINK_API-SPRACHE.
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_/RPM/TS_CD_OBJ_LINK_API_STR, 
CHANGE_DOCS_OBJ_LNK_ID TYPE STRING,
OBJECTID TYPE STRING,
CHANGENR TYPE STRING,
USERNAME TYPE STRING,
UDATE TYPE STRING,
UTIME TYPE STRING,
TCODE TYPE STRING,
TABNAME TYPE STRING,
TABKEY TYPE STRING,
KEYLEN TYPE STRING,
CHNGIND TYPE STRING,
FNAME TYPE STRING,
FTEXT TYPE STRING,
TEXTART TYPE STRING,
SPRACHE TYPE STRING,
TEXT_CASE TYPE STRING,
OUTLEN TYPE STRING,
F_OLD TYPE STRING,
F_NEW TYPE STRING,
KEYGUID TYPE STRING,
TABKEY254 TYPE STRING,
EXT_KEYLEN TYPE STRING,
KEYGUID_STR TYPE STRING,
VERSION TYPE STRING,
NAME TYPE STRING,
OBJECT_TYPE TYPE STRING,
ACTION TYPE STRING,
CHANGED_BY TYPE STRING,
TASK_GUID TYPE STRING,
PRJ_GUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/RPM/TS_CD_OBJ_LINK_API_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_/RPM/TS_CD_OBJ_LINK_API_STR-CHANGE_DOCS_OBJ_LNK_ID sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-OBJECTID sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-CHANGENR sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-USERNAME sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-UDATE sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-UTIME sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-TCODE sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-TABNAME sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-TABKEY sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-KEYLEN sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-CHNGIND sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-FNAME sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-FTEXT sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-TEXTART sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-SPRACHE sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-TEXT_CASE sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-OUTLEN sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-F_OLD sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-F_NEW sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-KEYGUID sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-TABKEY254 sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-EXT_KEYLEN sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-KEYGUID_STR sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-VERSION sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-NAME sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-OBJECT_TYPE sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-ACTION sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-CHANGED_BY sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-TASK_GUID sy-vline 
WA_/RPM/TS_CD_OBJ_LINK_API_STR-PRJ_GUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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