ABAP Select data from SAP table QMKONT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QMKONT
*  INTO TABLE @DATA(IT_QMKONT2).
*--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_QMKONT INDEX 1 INTO DATA(WA_QMKONT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QMKONT>-KZINDKONT = 1.
<QMKONT>-AUFNR = 1.
<QMKONT>-KOSTL = 1.
<QMKONT>-ANLN1 = 1.
<QMKONT>-ANLN2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QMKONT-PS_PSP_PNR, sy-vline,
  WA_QMKONT-NPLNR, sy-vline,
  WA_QMKONT-APLZL, sy-vline,
  WA_QMKONT-KDAUF, sy-vline,
  WA_QMKONT-KDPOS, sy-vline,
  WA_QMKONT-IMKEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QMKONT 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_QMKONT 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_QMKONT INTO WA_QMKONT.


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

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QMKONT-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMKONT-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QMKONT-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMKONT-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QMKONT-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMKONT-ANLN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_QMKONT-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMKONT-PS_PSP_PNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QMKONT-NPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMKONT-NPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QMKONT-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMKONT-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_QMKONT-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMKONT-IMKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QMKONT-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMKONT-PRCTR.
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_QMKONT_STR, 
KZINDKONT TYPE STRING,
AUFNR TYPE STRING,
KOSTL TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
PS_PSP_PNR TYPE STRING,
NPLNR TYPE STRING,
APLZL TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
IMKEY TYPE STRING,
KSTRG TYPE STRING,
PAOBJNR TYPE STRING,
KOKRS TYPE STRING,
BUKRS TYPE STRING,
KTEXT TYPE STRING,
DABRZ TYPE STRING,
PRCTR TYPE STRING,
KZSPEZABR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QMKONT_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_QMKONT_STR-KZINDKONT sy-vline 
WA_QMKONT_STR-AUFNR sy-vline 
WA_QMKONT_STR-KOSTL sy-vline 
WA_QMKONT_STR-ANLN1 sy-vline 
WA_QMKONT_STR-ANLN2 sy-vline 
WA_QMKONT_STR-PS_PSP_PNR sy-vline 
WA_QMKONT_STR-NPLNR sy-vline 
WA_QMKONT_STR-APLZL sy-vline 
WA_QMKONT_STR-KDAUF sy-vline 
WA_QMKONT_STR-KDPOS sy-vline 
WA_QMKONT_STR-IMKEY sy-vline 
WA_QMKONT_STR-KSTRG sy-vline 
WA_QMKONT_STR-PAOBJNR sy-vline 
WA_QMKONT_STR-KOKRS sy-vline 
WA_QMKONT_STR-BUKRS sy-vline 
WA_QMKONT_STR-KTEXT sy-vline 
WA_QMKONT_STR-DABRZ sy-vline 
WA_QMKONT_STR-PRCTR sy-vline 
WA_QMKONT_STR-KZSPEZABR sy-vline      INTO ld_text SEPARATED BY SPACE.

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