ABAP Select data from SAP table DISOL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DISOL
*  INTO TABLE @DATA(IT_DISOL2).
*--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_DISOL INDEX 1 INTO DATA(WA_DISOL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DISOL>-CLIENT = 1.
<DISOL>-ISLNR = 1.
<DISOL>-ISLVR = 1.
<DISOL>-ISLTP = 1.
<DISOL>-RBNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DISOL-ISLART, sy-vline,
  WA_DISOL-VALDTFRM, sy-vline,
  WA_DISOL-VALDTTO, sy-vline,
  WA_DISOL-COPER, sy-vline,
  WA_DISOL-ISLST, sy-vline,
  WA_DISOL-TKCAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DISOL 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_DISOL 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_DISOL INTO WA_DISOL.


*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 ISLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DISOL-ISLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DISOL-ISLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RISLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DISOL-RISLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DISOL-RISLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SISLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DISOL-SISLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DISOL-SISLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QMNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DISOL-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DISOL-QMNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LISLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DISOL-LISLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DISOL-LISLNR.
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_DISOL_STR, 
CLIENT TYPE STRING,
ISLNR TYPE STRING,
ISLVR TYPE STRING,
ISLTP TYPE STRING,
RBNR TYPE STRING,
ISLART TYPE STRING,
VALDTFRM TYPE STRING,
VALDTTO TYPE STRING,
COPER TYPE STRING,
ISLST TYPE STRING,
TKCAT TYPE STRING,
ACTCAT TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
FLGDEL TYPE STRING,
OBJNR TYPE STRING,
ISOLSEL TYPE STRING,
ISLTXT TYPE STRING,
RISLNR TYPE STRING,
RISLVR TYPE STRING,
SISLNR TYPE STRING,
SISLVR TYPE STRING,
QMNUM TYPE STRING,
RBNRX TYPE STRING,
STTXT TYPE STRING,
USTAX TYPE STRING,
USTTXT TYPE STRING,
ISLSTX TYPE STRING,
ISOLTX TYPE STRING,
TXTSLART TYPE STRING,
ACTYP TYPE STRING,
ISOLICON TYPE STRING,
ISOSICON TYPE STRING,
LINKICON TYPE STRING,
ITEMNR TYPE STRING,
FLGPOST TYPE STRING,
FLGUPD TYPE STRING,
TKCNT TYPE STRING,
ACTCNT TYPE STRING,
ICONEXP TYPE STRING,
LISLNR TYPE STRING,
LISLVR TYPE STRING,
FLGCAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DISOL_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_DISOL_STR-CLIENT sy-vline 
WA_DISOL_STR-ISLNR sy-vline 
WA_DISOL_STR-ISLVR sy-vline 
WA_DISOL_STR-ISLTP sy-vline 
WA_DISOL_STR-RBNR sy-vline 
WA_DISOL_STR-ISLART sy-vline 
WA_DISOL_STR-VALDTFRM sy-vline 
WA_DISOL_STR-VALDTTO sy-vline 
WA_DISOL_STR-COPER sy-vline 
WA_DISOL_STR-ISLST sy-vline 
WA_DISOL_STR-TKCAT sy-vline 
WA_DISOL_STR-ACTCAT sy-vline 
WA_DISOL_STR-ERNAM sy-vline 
WA_DISOL_STR-ERDAT sy-vline 
WA_DISOL_STR-ERTIM sy-vline 
WA_DISOL_STR-AENAM sy-vline 
WA_DISOL_STR-AEDAT sy-vline 
WA_DISOL_STR-AETIM sy-vline 
WA_DISOL_STR-FLGDEL sy-vline 
WA_DISOL_STR-OBJNR sy-vline 
WA_DISOL_STR-ISOLSEL sy-vline 
WA_DISOL_STR-ISLTXT sy-vline 
WA_DISOL_STR-RISLNR sy-vline 
WA_DISOL_STR-RISLVR sy-vline 
WA_DISOL_STR-SISLNR sy-vline 
WA_DISOL_STR-SISLVR sy-vline 
WA_DISOL_STR-QMNUM sy-vline 
WA_DISOL_STR-RBNRX sy-vline 
WA_DISOL_STR-STTXT sy-vline 
WA_DISOL_STR-USTAX sy-vline 
WA_DISOL_STR-USTTXT sy-vline 
WA_DISOL_STR-ISLSTX sy-vline 
WA_DISOL_STR-ISOLTX sy-vline 
WA_DISOL_STR-TXTSLART sy-vline 
WA_DISOL_STR-ACTYP sy-vline 
WA_DISOL_STR-ISOLICON sy-vline 
WA_DISOL_STR-ISOSICON sy-vline 
WA_DISOL_STR-LINKICON sy-vline 
WA_DISOL_STR-ITEMNR sy-vline 
WA_DISOL_STR-FLGPOST sy-vline 
WA_DISOL_STR-FLGUPD sy-vline 
WA_DISOL_STR-TKCNT sy-vline 
WA_DISOL_STR-ACTCNT sy-vline 
WA_DISOL_STR-ICONEXP sy-vline 
WA_DISOL_STR-LISLNR sy-vline 
WA_DISOL_STR-LISLVR sy-vline 
WA_DISOL_STR-FLGCAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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