ABAP Select data from SAP table KOMPRASPE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMPRASPE
*  INTO TABLE @DATA(IT_KOMPRASPE2).
*--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_KOMPRASPE INDEX 1 INTO DATA(WA_KOMPRASPE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMPRASPE>-TKONN = 1.
<KOMPRASPE>-TPOSN = 1.
<KOMPRASPE>-SIDE = 1.
<KOMPRASPE>-TPOSN_COM = 1.
<KOMPRASPE>-PR_ASPECT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMPRASPE-PR_COUNT, sy-vline,
  WA_KOMPRASPE-OLDPO, sy-vline,
  WA_KOMPRASPE-OLDTPOSN_COM, sy-vline,
  WA_KOMPRASPE-OLDPR_COUNT, sy-vline,
  WA_KOMPRASPE-QUANTITY, sy-vline,
  WA_KOMPRASPE-UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMPRASPE 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_KOMPRASPE 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_KOMPRASPE INTO WA_KOMPRASPE.


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

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMPRASPE-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPRASPE-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMPRASPE-KMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPRASPE-KMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KMEIN2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMPRASPE-KMEIN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPRASPE-KMEIN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KMEIN3
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMPRASPE-KMEIN3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPRASPE-KMEIN3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KMEIN4
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMPRASPE-KMEIN4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPRASPE-KMEIN4.
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_KOMPRASPE_STR, 
TKONN TYPE STRING,
TPOSN TYPE STRING,
SIDE TYPE STRING,
TPOSN_COM TYPE STRING,
PR_ASPECT TYPE STRING,
PR_COUNT TYPE STRING,
OLDPO TYPE STRING,
OLDTPOSN_COM TYPE STRING,
OLDPR_COUNT TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
PR_DATE TYPE STRING,
KBETR TYPE STRING,
KONWA TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
KBETR2 TYPE STRING,
KONWA2 TYPE STRING,
KPEIN2 TYPE STRING,
KMEIN2 TYPE STRING,
KBETR3 TYPE STRING,
KONWA3 TYPE STRING,
KPEIN3 TYPE STRING,
KMEIN3 TYPE STRING,
KBETR4 TYPE STRING,
KONWA4 TYPE STRING,
KPEIN4 TYPE STRING,
KMEIN4 TYPE STRING,
FUTURE TYPE STRING,
EXT_REF_PRASP TYPE STRING,
PLACE_HOLDER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMPRASPE_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_KOMPRASPE_STR-TKONN sy-vline 
WA_KOMPRASPE_STR-TPOSN sy-vline 
WA_KOMPRASPE_STR-SIDE sy-vline 
WA_KOMPRASPE_STR-TPOSN_COM sy-vline 
WA_KOMPRASPE_STR-PR_ASPECT sy-vline 
WA_KOMPRASPE_STR-PR_COUNT sy-vline 
WA_KOMPRASPE_STR-OLDPO sy-vline 
WA_KOMPRASPE_STR-OLDTPOSN_COM sy-vline 
WA_KOMPRASPE_STR-OLDPR_COUNT sy-vline 
WA_KOMPRASPE_STR-QUANTITY sy-vline 
WA_KOMPRASPE_STR-UNIT sy-vline 
WA_KOMPRASPE_STR-PR_DATE sy-vline 
WA_KOMPRASPE_STR-KBETR sy-vline 
WA_KOMPRASPE_STR-KONWA sy-vline 
WA_KOMPRASPE_STR-KPEIN sy-vline 
WA_KOMPRASPE_STR-KMEIN sy-vline 
WA_KOMPRASPE_STR-KBETR2 sy-vline 
WA_KOMPRASPE_STR-KONWA2 sy-vline 
WA_KOMPRASPE_STR-KPEIN2 sy-vline 
WA_KOMPRASPE_STR-KMEIN2 sy-vline 
WA_KOMPRASPE_STR-KBETR3 sy-vline 
WA_KOMPRASPE_STR-KONWA3 sy-vline 
WA_KOMPRASPE_STR-KPEIN3 sy-vline 
WA_KOMPRASPE_STR-KMEIN3 sy-vline 
WA_KOMPRASPE_STR-KBETR4 sy-vline 
WA_KOMPRASPE_STR-KONWA4 sy-vline 
WA_KOMPRASPE_STR-KPEIN4 sy-vline 
WA_KOMPRASPE_STR-KMEIN4 sy-vline 
WA_KOMPRASPE_STR-FUTURE sy-vline 
WA_KOMPRASPE_STR-EXT_REF_PRASP sy-vline 
WA_KOMPRASPE_STR-PLACE_HOLDER sy-vline      INTO ld_text SEPARATED BY SPACE.

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