ABAP Select data from SAP table KOMLFFP_FLOW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMLFFP_FLOW
*  INTO TABLE @DATA(IT_KOMLFFP_FLOW2).
*--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_KOMLFFP_FLOW INDEX 1 INTO DATA(WA_KOMLFFP_FLOW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMLFFP_FLOW>-WBELNV = 1.
<KOMLFFP_FLOW>-POSNRV = 1.
<KOMLFFP_FLOW>-LFTYPV = 1.
<KOMLFFP_FLOW>-LFTYPV_TEXT = 1.
<KOMLFFP_FLOW>-WBELNN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMLFFP_FLOW-POSNN, sy-vline,
  WA_KOMLFFP_FLOW-LFTYPN, sy-vline,
  WA_KOMLFFP_FLOW-LFTYPN_TEXT, sy-vline,
  WA_KOMLFFP_FLOW-LIFRE, sy-vline,
  WA_KOMLFFP_FLOW-BEZEI_LIFRE, sy-vline,
  WA_KOMLFFP_FLOW-KUNRE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMLFFP_FLOW 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_KOMLFFP_FLOW 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_KOMLFFP_FLOW INTO WA_KOMLFFP_FLOW.


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

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFFP_FLOW-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFFP_FLOW-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field LFAKS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFFP_FLOW-LFAKS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFFP_FLOW-LFAKS.
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_KOMLFFP_FLOW_STR, 
WBELNV TYPE STRING,
POSNRV TYPE STRING,
LFTYPV TYPE STRING,
LFTYPV_TEXT TYPE STRING,
WBELNN TYPE STRING,
POSNN TYPE STRING,
LFTYPN TYPE STRING,
LFTYPN_TEXT TYPE STRING,
LIFRE TYPE STRING,
BEZEI_LIFRE TYPE STRING,
KUNRE TYPE STRING,
BEZEI_KUNRE TYPE STRING,
WFDAT TYPE STRING,
RFBSK TYPE STRING,
STATUS_TEXT TYPE STRING,
LFART TYPE STRING,
LFART_TEXT TYPE STRING,
MATNR TYPE STRING,
ARKTX TYPE STRING,
MATKL TYPE STRING,
WERKS TYPE STRING,
MENGE TYPE STRING,
WFKME TYPE STRING,
NETWR TYPE STRING,
WAERL TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
LFAKS TYPE STRING,
FKSTO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMLFFP_FLOW_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_KOMLFFP_FLOW_STR-WBELNV sy-vline 
WA_KOMLFFP_FLOW_STR-POSNRV sy-vline 
WA_KOMLFFP_FLOW_STR-LFTYPV sy-vline 
WA_KOMLFFP_FLOW_STR-LFTYPV_TEXT sy-vline 
WA_KOMLFFP_FLOW_STR-WBELNN sy-vline 
WA_KOMLFFP_FLOW_STR-POSNN sy-vline 
WA_KOMLFFP_FLOW_STR-LFTYPN sy-vline 
WA_KOMLFFP_FLOW_STR-LFTYPN_TEXT sy-vline 
WA_KOMLFFP_FLOW_STR-LIFRE sy-vline 
WA_KOMLFFP_FLOW_STR-BEZEI_LIFRE sy-vline 
WA_KOMLFFP_FLOW_STR-KUNRE sy-vline 
WA_KOMLFFP_FLOW_STR-BEZEI_KUNRE sy-vline 
WA_KOMLFFP_FLOW_STR-WFDAT sy-vline 
WA_KOMLFFP_FLOW_STR-RFBSK sy-vline 
WA_KOMLFFP_FLOW_STR-STATUS_TEXT sy-vline 
WA_KOMLFFP_FLOW_STR-LFART sy-vline 
WA_KOMLFFP_FLOW_STR-LFART_TEXT sy-vline 
WA_KOMLFFP_FLOW_STR-MATNR sy-vline 
WA_KOMLFFP_FLOW_STR-ARKTX sy-vline 
WA_KOMLFFP_FLOW_STR-MATKL sy-vline 
WA_KOMLFFP_FLOW_STR-WERKS sy-vline 
WA_KOMLFFP_FLOW_STR-MENGE sy-vline 
WA_KOMLFFP_FLOW_STR-WFKME sy-vline 
WA_KOMLFFP_FLOW_STR-NETWR sy-vline 
WA_KOMLFFP_FLOW_STR-WAERL sy-vline 
WA_KOMLFFP_FLOW_STR-ERNAM sy-vline 
WA_KOMLFFP_FLOW_STR-ERDAT sy-vline 
WA_KOMLFFP_FLOW_STR-LFAKS sy-vline 
WA_KOMLFFP_FLOW_STR-FKSTO sy-vline      INTO ld_text SEPARATED BY SPACE.

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