ABAP Select data from SAP table SGLDESTREC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SGLDESTREC
*  INTO TABLE @DATA(IT_SGLDESTREC2).
*--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_SGLDESTREC INDEX 1 INTO DATA(WA_SGLDESTREC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SGLDESTREC>-SERVERNAME = 1.
<SGLDESTREC>-MAINREC_B = 1.
<SGLDESTREC>-MAINREC_E = 1.
<SGLDESTREC>-EOFREACHED = 1.
<SGLDESTREC>-ERROR_TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SGLDESTREC-RECS_READ, sy-vline,
  WA_SGLDESTREC-RC, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_SGLDESTREC 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_SGLDESTREC 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_SGLDESTREC INTO WA_SGLDESTREC.


*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_SGLDESTREC_STR, 
SERVERNAME TYPE STRING,
MAINREC_B TYPE STRING,
MAINREC_E TYPE STRING,
EOFREACHED TYPE STRING,
ERROR_TEXT TYPE STRING,
RECS_READ TYPE STRING,
RC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SGLDESTREC_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_SGLDESTREC_STR-SERVERNAME sy-vline 
WA_SGLDESTREC_STR-MAINREC_B sy-vline 
WA_SGLDESTREC_STR-MAINREC_E sy-vline 
WA_SGLDESTREC_STR-EOFREACHED sy-vline 
WA_SGLDESTREC_STR-ERROR_TEXT sy-vline 
WA_SGLDESTREC_STR-RECS_READ sy-vline 
WA_SGLDESTREC_STR-RC sy-vline      INTO ld_text SEPARATED BY SPACE.

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