ABAP Select data from SAP table IWB_DIFF_DYNPRO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWB_DIFF_DYNPRO
*  INTO TABLE @DATA(IT_IWB_DIFF_DYNPRO2).
*--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_IWB_DIFF_DYNPRO INDEX 1 INTO DATA(WA_IWB_DIFF_DYNPRO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWB_DIFF_DYNPRO>-CHNG_TIME1 = 1.
<IWB_DIFF_DYNPRO>-CHNG_TIME2 = 1.
<IWB_DIFF_DYNPRO>-RELEASE1 = 1.
<IWB_DIFF_DYNPRO>-RELEASE2 = 1.
<IWB_DIFF_DYNPRO>-INDUSTRY1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWB_DIFF_DYNPRO-INDUSTRY2, sy-vline,
  WA_IWB_DIFF_DYNPRO-COUNTRY1, sy-vline,
  WA_IWB_DIFF_DYNPRO-COUNTRY2, sy-vline,
  WA_IWB_DIFF_DYNPRO-LANGUAGE1, sy-vline,
  WA_IWB_DIFF_DYNPRO-LANGUAGE2, sy-vline,
  WA_IWB_DIFF_DYNPRO-TECHNAME1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWB_DIFF_DYNPRO 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_IWB_DIFF_DYNPRO 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_IWB_DIFF_DYNPRO INTO WA_IWB_DIFF_DYNPRO.


*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 TSTLC, internal->external for field CHNG_TIME1
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_IWB_DIFF_DYNPRO-CHNG_TIME1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWB_DIFF_DYNPRO-CHNG_TIME1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CHNG_TIME2
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_IWB_DIFF_DYNPRO-CHNG_TIME2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWB_DIFF_DYNPRO-CHNG_TIME2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGE1
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_IWB_DIFF_DYNPRO-LANGUAGE1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWB_DIFF_DYNPRO-LANGUAGE1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGE2
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_IWB_DIFF_DYNPRO-LANGUAGE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWB_DIFF_DYNPRO-LANGUAGE2.
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_IWB_DIFF_DYNPRO_STR, 
CHNG_TIME1 TYPE STRING,
CHNG_TIME2 TYPE STRING,
RELEASE1 TYPE STRING,
RELEASE2 TYPE STRING,
INDUSTRY1 TYPE STRING,
INDUSTRY2 TYPE STRING,
COUNTRY1 TYPE STRING,
COUNTRY2 TYPE STRING,
LANGUAGE1 TYPE STRING,
LANGUAGE2 TYPE STRING,
TECHNAME1 TYPE STRING,
TECHNAME2 TYPE STRING,
PHIO1_CLASS TYPE STRING,
PHIO1_OBJID TYPE STRING,
PHIO2_CLASS TYPE STRING,
PHIO2_OBJID TYPE STRING,
LOIO1_CLASS TYPE STRING,
LOIO1_OBJID TYPE STRING,
LOIO2_CLASS TYPE STRING,
LOIO2_OBJID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWB_DIFF_DYNPRO_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_IWB_DIFF_DYNPRO_STR-CHNG_TIME1 sy-vline 
WA_IWB_DIFF_DYNPRO_STR-CHNG_TIME2 sy-vline 
WA_IWB_DIFF_DYNPRO_STR-RELEASE1 sy-vline 
WA_IWB_DIFF_DYNPRO_STR-RELEASE2 sy-vline 
WA_IWB_DIFF_DYNPRO_STR-INDUSTRY1 sy-vline 
WA_IWB_DIFF_DYNPRO_STR-INDUSTRY2 sy-vline 
WA_IWB_DIFF_DYNPRO_STR-COUNTRY1 sy-vline 
WA_IWB_DIFF_DYNPRO_STR-COUNTRY2 sy-vline 
WA_IWB_DIFF_DYNPRO_STR-LANGUAGE1 sy-vline 
WA_IWB_DIFF_DYNPRO_STR-LANGUAGE2 sy-vline 
WA_IWB_DIFF_DYNPRO_STR-TECHNAME1 sy-vline 
WA_IWB_DIFF_DYNPRO_STR-TECHNAME2 sy-vline 
WA_IWB_DIFF_DYNPRO_STR-PHIO1_CLASS sy-vline 
WA_IWB_DIFF_DYNPRO_STR-PHIO1_OBJID sy-vline 
WA_IWB_DIFF_DYNPRO_STR-PHIO2_CLASS sy-vline 
WA_IWB_DIFF_DYNPRO_STR-PHIO2_OBJID sy-vline 
WA_IWB_DIFF_DYNPRO_STR-LOIO1_CLASS sy-vline 
WA_IWB_DIFF_DYNPRO_STR-LOIO1_OBJID sy-vline 
WA_IWB_DIFF_DYNPRO_STR-LOIO2_CLASS sy-vline 
WA_IWB_DIFF_DYNPRO_STR-LOIO2_OBJID sy-vline      INTO ld_text SEPARATED BY SPACE.

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