ABAP Select data from SAP table KOMPRASPE_STD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KOMPRASPE_STD 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_STD. 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_STD 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_STD TYPE STANDARD TABLE OF KOMPRASPE_STD,
      WA_KOMPRASPE_STD TYPE KOMPRASPE_STD,
      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_STD> TYPE KOMPRASPE_STD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMPRASPE_STD
*  INTO TABLE @DATA(IT_KOMPRASPE_STD2).
*--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_STD INDEX 1 INTO DATA(WA_KOMPRASPE_STD2).


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

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

ENDLOOP.

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

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


*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_STD-TKONN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMPRASPE_STD-TKONN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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