ABAP Select data from SAP table DISMIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DISMIT
*  INTO TABLE @DATA(IT_DISMIT2).
*--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_DISMIT INDEX 1 INTO DATA(WA_DISMIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DISMIT>-ISMITSEL = 1.
<DISMIT>-CLIENT = 1.
<DISMIT>-ISMNR = 1.
<DISMIT>-ISMVR = 1.
<DISMIT>-ITEMNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DISMIT-ERNAM, sy-vline,
  WA_DISMIT-ERDAT, sy-vline,
  WA_DISMIT-ERTIM, sy-vline,
  WA_DISMIT-AENAM, sy-vline,
  WA_DISMIT-AEDAT, sy-vline,
  WA_DISMIT-AETIM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DISMIT 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_DISMIT 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_DISMIT INTO WA_DISMIT.


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

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_DISMIT-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DISMIT-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_DISMIT_STR, 
ISMITSEL TYPE STRING,
CLIENT TYPE STRING,
ISMNR TYPE STRING,
ISMVR TYPE STRING,
ITEMNR TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
FLGDEL TYPE STRING,
FLGUPD TYPE STRING,
ITEMTXT TYPE STRING,
LANGU TYPE STRING,
INDLTXT TYPE STRING,
ISMIICON TYPE STRING,
LGTXICON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DISMIT_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_DISMIT_STR-ISMITSEL sy-vline 
WA_DISMIT_STR-CLIENT sy-vline 
WA_DISMIT_STR-ISMNR sy-vline 
WA_DISMIT_STR-ISMVR sy-vline 
WA_DISMIT_STR-ITEMNR sy-vline 
WA_DISMIT_STR-ERNAM sy-vline 
WA_DISMIT_STR-ERDAT sy-vline 
WA_DISMIT_STR-ERTIM sy-vline 
WA_DISMIT_STR-AENAM sy-vline 
WA_DISMIT_STR-AEDAT sy-vline 
WA_DISMIT_STR-AETIM sy-vline 
WA_DISMIT_STR-FLGDEL sy-vline 
WA_DISMIT_STR-FLGUPD sy-vline 
WA_DISMIT_STR-ITEMTXT sy-vline 
WA_DISMIT_STR-LANGU sy-vline 
WA_DISMIT_STR-INDLTXT sy-vline 
WA_DISMIT_STR-ISMIICON sy-vline 
WA_DISMIT_STR-LGTXICON sy-vline      INTO ld_text SEPARATED BY SPACE.

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