ABAP Select data from SAP table DISOTXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DISOTXT
*  INTO TABLE @DATA(IT_DISOTXT2).
*--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_DISOTXT INDEX 1 INTO DATA(WA_DISOTXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DISOTXT>-CLIENT = 1.
<DISOTXT>-ISLNR = 1.
<DISOTXT>-ISLVR = 1.
<DISOTXT>-LANGU = 1.
<DISOTXT>-ISLTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DISOTXT-INDLTXT, sy-vline,
  WA_DISOTXT-TRSTAT, sy-vline,
  WA_DISOTXT-ERNAM, sy-vline,
  WA_DISOTXT-ERDAT, sy-vline,
  WA_DISOTXT-ERTIM, sy-vline,
  WA_DISOTXT-AENAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DISOTXT 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_DISOTXT 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_DISOTXT INTO WA_DISOTXT.


*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_DISOTXT-ISLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DISOTXT-ISLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_DISOTXT-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DISOTXT-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_DISOTXT_STR, 
CLIENT TYPE STRING,
ISLNR TYPE STRING,
ISLVR TYPE STRING,
LANGU TYPE STRING,
ISLTXT TYPE STRING,
INDLTXT TYPE STRING,
TRSTAT TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
FLGDEL TYPE STRING,
ISLICON TYPE STRING,
ISLSEL TYPE STRING,
FLGUPD TYPE STRING,
FLGTXTUPD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DISOTXT_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_DISOTXT_STR-CLIENT sy-vline 
WA_DISOTXT_STR-ISLNR sy-vline 
WA_DISOTXT_STR-ISLVR sy-vline 
WA_DISOTXT_STR-LANGU sy-vline 
WA_DISOTXT_STR-ISLTXT sy-vline 
WA_DISOTXT_STR-INDLTXT sy-vline 
WA_DISOTXT_STR-TRSTAT sy-vline 
WA_DISOTXT_STR-ERNAM sy-vline 
WA_DISOTXT_STR-ERDAT sy-vline 
WA_DISOTXT_STR-ERTIM sy-vline 
WA_DISOTXT_STR-AENAM sy-vline 
WA_DISOTXT_STR-AEDAT sy-vline 
WA_DISOTXT_STR-AETIM sy-vline 
WA_DISOTXT_STR-FLGDEL sy-vline 
WA_DISOTXT_STR-ISLICON sy-vline 
WA_DISOTXT_STR-ISLSEL sy-vline 
WA_DISOTXT_STR-FLGUPD sy-vline 
WA_DISOTXT_STR-FLGTXTUPD sy-vline      INTO ld_text SEPARATED BY SPACE.

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