ABAP Select data from SAP table ARCHLNK_TOAAR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ARCHLNK_TOAAR
*  INTO TABLE @DATA(IT_ARCHLNK_TOAAR2).
*--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_ARCHLNK_TOAAR INDEX 1 INTO DATA(WA_ARCHLNK_TOAAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ARCHLNK_TOAAR>-ARCHIV_ID = 1.
<ARCHLNK_TOAAR>-INTERFACE = 1.
<ARCHLNK_TOAAR>-SCAN_ID = 1.
<ARCHLNK_TOAAR>-ARCHIVNAME = 1.
<ARCHLNK_TOAAR>-ARCHIVPATH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ARCHLNK_TOAAR-BASICPATH, sy-vline,
  WA_ARCHLNK_TOAAR-ARCHIV_SNA, sy-vline,
  WA_ARCHLNK_TOAAR-FUNCTIONS, sy-vline,
  WA_ARCHLNK_TOAAR-IN_VERSION, sy-vline,
  WA_ARCHLNK_TOAAR-PROTOKOLL, sy-vline,
  WA_ARCHLNK_TOAAR-RPC_HOST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ARCHLNK_TOAAR 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_ARCHLNK_TOAAR 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_ARCHLNK_TOAAR INTO WA_ARCHLNK_TOAAR.


*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 TSTLC, internal->external for field CREA_TIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_ARCHLNK_TOAAR-CREA_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ARCHLNK_TOAAR-CREA_TIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CHNG_TIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_ARCHLNK_TOAAR-CHNG_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ARCHLNK_TOAAR-CHNG_TIME.
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_ARCHLNK_TOAAR_STR, 
ARCHIV_ID TYPE STRING,
INTERFACE TYPE STRING,
SCAN_ID TYPE STRING,
ARCHIVNAME TYPE STRING,
ARCHIVPATH TYPE STRING,
BASICPATH TYPE STRING,
ARCHIV_SNA TYPE STRING,
FUNCTIONS TYPE STRING,
IN_VERSION TYPE STRING,
PROTOKOLL TYPE STRING,
RPC_HOST TYPE STRING,
RPC_SERVIC TYPE STRING,
VERSION TYPE STRING,
VIEWER TYPE STRING,
VIEWOPTION TYPE STRING,
RPC TYPE STRING,
RFC TYPE STRING,
FILES TYPE STRING,
HTTP TYPE STRING,
FILEDIRECT TYPE STRING,
SPOOLPATH TYPE STRING,
HTTP_SERV TYPE STRING,
CREA_USER TYPE STRING,
CREA_TIME TYPE STRING,
CHNG_USER TYPE STRING,
CHNG_TIME TYPE STRING,
SCRIPT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ARCHLNK_TOAAR_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_ARCHLNK_TOAAR_STR-ARCHIV_ID sy-vline 
WA_ARCHLNK_TOAAR_STR-INTERFACE sy-vline 
WA_ARCHLNK_TOAAR_STR-SCAN_ID sy-vline 
WA_ARCHLNK_TOAAR_STR-ARCHIVNAME sy-vline 
WA_ARCHLNK_TOAAR_STR-ARCHIVPATH sy-vline 
WA_ARCHLNK_TOAAR_STR-BASICPATH sy-vline 
WA_ARCHLNK_TOAAR_STR-ARCHIV_SNA sy-vline 
WA_ARCHLNK_TOAAR_STR-FUNCTIONS sy-vline 
WA_ARCHLNK_TOAAR_STR-IN_VERSION sy-vline 
WA_ARCHLNK_TOAAR_STR-PROTOKOLL sy-vline 
WA_ARCHLNK_TOAAR_STR-RPC_HOST sy-vline 
WA_ARCHLNK_TOAAR_STR-RPC_SERVIC sy-vline 
WA_ARCHLNK_TOAAR_STR-VERSION sy-vline 
WA_ARCHLNK_TOAAR_STR-VIEWER sy-vline 
WA_ARCHLNK_TOAAR_STR-VIEWOPTION sy-vline 
WA_ARCHLNK_TOAAR_STR-RPC sy-vline 
WA_ARCHLNK_TOAAR_STR-RFC sy-vline 
WA_ARCHLNK_TOAAR_STR-FILES sy-vline 
WA_ARCHLNK_TOAAR_STR-HTTP sy-vline 
WA_ARCHLNK_TOAAR_STR-FILEDIRECT sy-vline 
WA_ARCHLNK_TOAAR_STR-SPOOLPATH sy-vline 
WA_ARCHLNK_TOAAR_STR-HTTP_SERV sy-vline 
WA_ARCHLNK_TOAAR_STR-CREA_USER sy-vline 
WA_ARCHLNK_TOAAR_STR-CREA_TIME sy-vline 
WA_ARCHLNK_TOAAR_STR-CHNG_USER sy-vline 
WA_ARCHLNK_TOAAR_STR-CHNG_TIME sy-vline 
WA_ARCHLNK_TOAAR_STR-SCRIPT sy-vline      INTO ld_text SEPARATED BY SPACE.

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