ABAP Select data from SAP table T7XSSSERLNKT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7XSSSERLNKT 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 T7XSSSERLNKT. 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 T7XSSSERLNKT 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_T7XSSSERLNKT TYPE STANDARD TABLE OF T7XSSSERLNKT,
      WA_T7XSSSERLNKT TYPE T7XSSSERLNKT,
      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: <T7XSSSERLNKT> TYPE T7XSSSERLNKT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7XSSSERLNKT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7XSSSERLNKT
  INTO TABLE IT_T7XSSSERLNKT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7XSSSERLNKT
*  INTO TABLE @DATA(IT_T7XSSSERLNKT2).
*--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_T7XSSSERLNKT INDEX 1 INTO DATA(WA_T7XSSSERLNKT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7XSSSERLNKT ASSIGNING <T7XSSSERLNKT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7XSSSERLNKT>-MANDT = 1.
<T7XSSSERLNKT>-LANGU = 1.
<T7XSSSERLNKT>-LINKLISTKEY = 1.
<T7XSSSERLNKT>-TEXTLINKLISTKEY = 1.
<T7XSSSERLNKT>-TEXTHPLINK = 1.

ENDLOOP.

LOOP AT IT_T7XSSSERLNKT INTO WA_T7XSSSERLNKT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7XSSSERLNKT-TEXTAPLINK, sy-vline,
  WA_T7XSSSERLNKT-TEXTRESTARTLINK, sy-vline,
  WA_T7XSSSERLNKT-TEXTSERVICELINK1, sy-vline,
  WA_T7XSSSERLNKT-TEXTSERVICELINK2, sy-vline,
  WA_T7XSSSERLNKT-TEXTSERVICELINK3, sy-vline,
  WA_T7XSSSERLNKT-TEXTSERVICELINK4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7XSSSERLNKT 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_T7XSSSERLNKT 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_T7XSSSERLNKT INTO WA_T7XSSSERLNKT.


*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 LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_T7XSSSERLNKT-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T7XSSSERLNKT-LANGU.
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_T7XSSSERLNKT_STR, 
MANDT TYPE STRING,
LANGU TYPE STRING,
LINKLISTKEY TYPE STRING,
TEXTLINKLISTKEY TYPE STRING,
TEXTHPLINK TYPE STRING,
TEXTAPLINK TYPE STRING,
TEXTRESTARTLINK TYPE STRING,
TEXTSERVICELINK1 TYPE STRING,
TEXTSERVICELINK2 TYPE STRING,
TEXTSERVICELINK3 TYPE STRING,
TEXTSERVICELINK4 TYPE STRING,
TEXTSERVICELINK5 TYPE STRING,
TEXTSRVKEYRESTRT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7XSSSERLNKT_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_T7XSSSERLNKT_STR-MANDT sy-vline 
WA_T7XSSSERLNKT_STR-LANGU sy-vline 
WA_T7XSSSERLNKT_STR-LINKLISTKEY sy-vline 
WA_T7XSSSERLNKT_STR-TEXTLINKLISTKEY sy-vline 
WA_T7XSSSERLNKT_STR-TEXTHPLINK sy-vline 
WA_T7XSSSERLNKT_STR-TEXTAPLINK sy-vline 
WA_T7XSSSERLNKT_STR-TEXTRESTARTLINK sy-vline 
WA_T7XSSSERLNKT_STR-TEXTSERVICELINK1 sy-vline 
WA_T7XSSSERLNKT_STR-TEXTSERVICELINK2 sy-vline 
WA_T7XSSSERLNKT_STR-TEXTSERVICELINK3 sy-vline 
WA_T7XSSSERLNKT_STR-TEXTSERVICELINK4 sy-vline 
WA_T7XSSSERLNKT_STR-TEXTSERVICELINK5 sy-vline 
WA_T7XSSSERLNKT_STR-TEXTSRVKEYRESTRT sy-vline      INTO ld_text SEPARATED BY SPACE.

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