ABAP Select data from SAP table KOMLFPTC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMLFPTC
*  INTO TABLE @DATA(IT_KOMLFPTC2).
*--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_KOMLFPTC INDEX 1 INTO DATA(WA_KOMLFPTC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMLFPTC>-WBELN = 1.
<KOMLFPTC>-POSNR = 1.
<KOMLFPTC>-WBELNV = 1.
<KOMLFPTC>-POSNRV = 1.
<KOMLFPTC>-LFTYPV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMLFPTC-WWTTY, sy-vline,
  WA_KOMLFPTC-GSBER, sy-vline,
  WA_KOMLFPTC-PAOBJNR, sy-vline,
  WA_KOMLFPTC-KOSTL, sy-vline,
  WA_KOMLFPTC-PRCTR, sy-vline,
  WA_KOMLFPTC-KOKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMLFPTC 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_KOMLFPTC 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_KOMLFPTC INTO WA_KOMLFPTC.


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

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

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

*Conversion exit ALPHA, internal->external for field J_1BINDUST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFPTC-J_1BINDUST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFPTC-J_1BINDUST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CFOBR, internal->external for field J_1BCFOP
CALL FUNCTION 'CONVERSION_EXIT_CFOBR_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFPTC-J_1BCFOP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFPTC-J_1BCFOP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field J_1BTAXLW1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFPTC-J_1BTAXLW1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFPTC-J_1BTAXLW1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field J_1BTAXLW2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFPTC-J_1BTAXLW2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFPTC-J_1BTAXLW2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field J_1BTAXLW3
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFPTC-J_1BTAXLW3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFPTC-J_1BTAXLW3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field J_1BTAXLW4
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFPTC-J_1BTAXLW4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFPTC-J_1BTAXLW4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field J_1BTAXLW5
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFPTC-J_1BTAXLW5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFPTC-J_1BTAXLW5.
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_KOMLFPTC_STR, 
WBELN TYPE STRING,
POSNR TYPE STRING,
WBELNV TYPE STRING,
POSNRV TYPE STRING,
LFTYPV TYPE STRING,
WWTTY TYPE STRING,
GSBER TYPE STRING,
PAOBJNR TYPE STRING,
KOSTL TYPE STRING,
PRCTR TYPE STRING,
KOKRS TYPE STRING,
SKTOF TYPE STRING,
J_1BNBM TYPE STRING,
J_1BMATUSE TYPE STRING,
J_1BMATORG TYPE STRING,
J_1BOWNPRO TYPE STRING,
J_1BINDUST TYPE STRING,
J_1BCFOP TYPE STRING,
J_1BTXSDC TYPE STRING,
J_1BTAXLW1 TYPE STRING,
J_1BTAXLW2 TYPE STRING,
J_1BTAXLW3 TYPE STRING,
J_1BTAXLW4 TYPE STRING,
J_1BTAXLW5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMLFPTC_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_KOMLFPTC_STR-WBELN sy-vline 
WA_KOMLFPTC_STR-POSNR sy-vline 
WA_KOMLFPTC_STR-WBELNV sy-vline 
WA_KOMLFPTC_STR-POSNRV sy-vline 
WA_KOMLFPTC_STR-LFTYPV sy-vline 
WA_KOMLFPTC_STR-WWTTY sy-vline 
WA_KOMLFPTC_STR-GSBER sy-vline 
WA_KOMLFPTC_STR-PAOBJNR sy-vline 
WA_KOMLFPTC_STR-KOSTL sy-vline 
WA_KOMLFPTC_STR-PRCTR sy-vline 
WA_KOMLFPTC_STR-KOKRS sy-vline 
WA_KOMLFPTC_STR-SKTOF sy-vline 
WA_KOMLFPTC_STR-J_1BNBM sy-vline 
WA_KOMLFPTC_STR-J_1BMATUSE sy-vline 
WA_KOMLFPTC_STR-J_1BMATORG sy-vline 
WA_KOMLFPTC_STR-J_1BOWNPRO sy-vline 
WA_KOMLFPTC_STR-J_1BINDUST sy-vline 
WA_KOMLFPTC_STR-J_1BCFOP sy-vline 
WA_KOMLFPTC_STR-J_1BTXSDC sy-vline 
WA_KOMLFPTC_STR-J_1BTAXLW1 sy-vline 
WA_KOMLFPTC_STR-J_1BTAXLW2 sy-vline 
WA_KOMLFPTC_STR-J_1BTAXLW3 sy-vline 
WA_KOMLFPTC_STR-J_1BTAXLW4 sy-vline 
WA_KOMLFPTC_STR-J_1BTAXLW5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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