ABAP Select data from SAP table QSSES_V_QPAC_KAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QSSES_V_QPAC_KAT
*  INTO TABLE @DATA(IT_QSSES_V_QPAC_KAT2).
*--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_QSSES_V_QPAC_KAT INDEX 1 INTO DATA(WA_QSSES_V_QPAC_KAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QSSES_V_QPAC_KAT>-WERKS = 1.
<QSSES_V_QPAC_KAT>-KATALOGART = 1.
<QSSES_V_QPAC_KAT>-AUSWAHLMGE = 1.
<QSSES_V_QPAC_KAT>-CODEGRUPPE = 1.
<QSSES_V_QPAC_KAT>-CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QSSES_V_QPAC_KAT-VERSIONAM, sy-vline,
  WA_QSSES_V_QPAC_KAT-VERSION, sy-vline,
  WA_QSSES_V_QPAC_KAT-BEWERTUNG, sy-vline,
  WA_QSSES_V_QPAC_KAT-FEHLKLASSE, sy-vline,
  WA_QSSES_V_QPAC_KAT-QKENNZAHL, sy-vline,
  WA_QSSES_V_QPAC_KAT-FOLGEAKTI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QSSES_V_QPAC_KAT 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_QSSES_V_QPAC_KAT 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_QSSES_V_QPAC_KAT INTO WA_QSSES_V_QPAC_KAT.


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

*Conversion exit ALPHA, internal->external for field VERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QSSES_V_QPAC_KAT-VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QSSES_V_QPAC_KAT-VERSION.
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_QSSES_V_QPAC_KAT_STR, 
WERKS TYPE STRING,
KATALOGART TYPE STRING,
AUSWAHLMGE TYPE STRING,
CODEGRUPPE TYPE STRING,
CODE TYPE STRING,
VERSIONAM TYPE STRING,
VERSION TYPE STRING,
BEWERTUNG TYPE STRING,
FEHLKLASSE TYPE STRING,
QKENNZAHL TYPE STRING,
FOLGEAKTI TYPE STRING,
BB_DUNKEL TYPE STRING,
FELDNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QSSES_V_QPAC_KAT_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_QSSES_V_QPAC_KAT_STR-WERKS sy-vline 
WA_QSSES_V_QPAC_KAT_STR-KATALOGART sy-vline 
WA_QSSES_V_QPAC_KAT_STR-AUSWAHLMGE sy-vline 
WA_QSSES_V_QPAC_KAT_STR-CODEGRUPPE sy-vline 
WA_QSSES_V_QPAC_KAT_STR-CODE sy-vline 
WA_QSSES_V_QPAC_KAT_STR-VERSIONAM sy-vline 
WA_QSSES_V_QPAC_KAT_STR-VERSION sy-vline 
WA_QSSES_V_QPAC_KAT_STR-BEWERTUNG sy-vline 
WA_QSSES_V_QPAC_KAT_STR-FEHLKLASSE sy-vline 
WA_QSSES_V_QPAC_KAT_STR-QKENNZAHL sy-vline 
WA_QSSES_V_QPAC_KAT_STR-FOLGEAKTI sy-vline 
WA_QSSES_V_QPAC_KAT_STR-BB_DUNKEL sy-vline 
WA_QSSES_V_QPAC_KAT_STR-FELDNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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