ABAP Select data from SAP table KOMLFP_LI2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KOMLFP_LI2 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 KOMLFP_LI2. 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 KOMLFP_LI2 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_KOMLFP_LI2 TYPE STANDARD TABLE OF KOMLFP_LI2,
      WA_KOMLFP_LI2 TYPE KOMLFP_LI2,
      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: <KOMLFP_LI2> TYPE KOMLFP_LI2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KOMLFP_LI2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KOMLFP_LI2
  INTO TABLE IT_KOMLFP_LI2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMLFP_LI2
*  INTO TABLE @DATA(IT_KOMLFP_LI22).
*--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_KOMLFP_LI2 INDEX 1 INTO DATA(WA_KOMLFP_LI22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KOMLFP_LI2 ASSIGNING <KOMLFP_LI2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMLFP_LI2>-MANDT = 1.
<KOMLFP_LI2>-WBELN = 1.
<KOMLFP_LI2>-POSNR = 1.
<KOMLFP_LI2>-MATNR = 1.
<KOMLFP_LI2>-MATKL = 1.

ENDLOOP.

LOOP AT IT_KOMLFP_LI2 INTO WA_KOMLFP_LI2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMLFP_LI2-WERKS, sy-vline,
  WA_KOMLFP_LI2-MWSKZ, sy-vline,
  WA_KOMLFP_LI2-MWSK2, sy-vline,
  WA_KOMLFP_LI2-PRSDT, sy-vline,
  WA_KOMLFP_LI2-MENGE, sy-vline,
  WA_KOMLFP_LI2-NETPR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMLFP_LI2 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_KOMLFP_LI2 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_KOMLFP_LI2 INTO WA_KOMLFP_LI2.


*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_KOMLFP_LI2-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-WBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WFKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-WFKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-WFKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FPRME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-FPRME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-FPRME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-VOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHRV
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-GJAHRV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-GJAHRV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AKTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-AKTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-INFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-INFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PUNEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-PUNEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-PUNEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOLIF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-KOLIF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-KOLIF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATBF
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFP_LI2-MATBF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFP_LI2-MATBF.
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_KOMLFP_LI2_STR, 
MANDT TYPE STRING,
WBELN TYPE STRING,
POSNR TYPE STRING,
MATNR TYPE STRING,
MATKL TYPE STRING,
WERKS TYPE STRING,
MWSKZ TYPE STRING,
MWSK2 TYPE STRING,
PRSDT TYPE STRING,
MENGE TYPE STRING,
NETPR TYPE STRING,
WAERL TYPE STRING,
PEINH TYPE STRING,
WFKME TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
FPRME TYPE STRING,
FPUMZ TYPE STRING,
FPUMN TYPE STRING,
MEINS TYPE STRING,
NTGEW TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
NETWR TYPE STRING,
BRTWR TYPE STRING,
KZWI1 TYPE STRING,
KZWI2 TYPE STRING,
KZWI3 TYPE STRING,
KZWI4 TYPE STRING,
KZWI5 TYPE STRING,
KZWI6 TYPE STRING,
BONBA TYPE STRING,
EFFWR TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERZET TYPE STRING,
KOWRR TYPE STRING,
SKTOF TYPE STRING,
SKFBP TYPE STRING,
NETWRD TYPE STRING,
BRTWRD TYPE STRING,
KZWI1D TYPE STRING,
KZWI2D TYPE STRING,
KZWI3D TYPE STRING,
KZWI4D TYPE STRING,
KZWI5D TYPE STRING,
KZWI6D TYPE STRING,
BONBAD TYPE STRING,
SKFBPD TYPE STRING,
EFFWRD TYPE STRING,
MWSBPD TYPE STRING,
WBELNV TYPE STRING,
POSNRV TYPE STRING,
LFTYPV TYPE STRING,
GJAHRV TYPE STRING,
AKTNR TYPE STRING,
LFGRU TYPE STRING,
ARKTX TYPE STRING,
INFNR TYPE STRING,
IDNLF TYPE STRING,
MWSBP TYPE STRING,
TXJCD TYPE STRING,
EBONF TYPE STRING,
BONUS TYPE STRING,
EBON2 TYPE STRING,
EBON3 TYPE STRING,
LTSNR TYPE STRING,
EKKOL TYPE STRING,
PUNEI TYPE STRING,
ANZPU TYPE STRING,
KOLIF TYPE STRING,
NAVNW TYPE STRING,
BWTAR TYPE STRING,
BWTTY TYPE STRING,
GSBER TYPE STRING,
KOSTL TYPE STRING,
PRCTR TYPE STRING,
KOKRS TYPE STRING,
CHARG TYPE STRING,
WUVPRS TYPE STRING,
WBELN_V TYPE STRING,
POSNR_V TYPE STRING,
FTYPV_V TYPE STRING,
ITEMCAT TYPE STRING,
MATBF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMLFP_LI2_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_KOMLFP_LI2_STR-MANDT sy-vline 
WA_KOMLFP_LI2_STR-WBELN sy-vline 
WA_KOMLFP_LI2_STR-POSNR sy-vline 
WA_KOMLFP_LI2_STR-MATNR sy-vline 
WA_KOMLFP_LI2_STR-MATKL sy-vline 
WA_KOMLFP_LI2_STR-WERKS sy-vline 
WA_KOMLFP_LI2_STR-MWSKZ sy-vline 
WA_KOMLFP_LI2_STR-MWSK2 sy-vline 
WA_KOMLFP_LI2_STR-PRSDT sy-vline 
WA_KOMLFP_LI2_STR-MENGE sy-vline 
WA_KOMLFP_LI2_STR-NETPR sy-vline 
WA_KOMLFP_LI2_STR-WAERL sy-vline 
WA_KOMLFP_LI2_STR-PEINH sy-vline 
WA_KOMLFP_LI2_STR-WFKME sy-vline 
WA_KOMLFP_LI2_STR-UMREZ sy-vline 
WA_KOMLFP_LI2_STR-UMREN sy-vline 
WA_KOMLFP_LI2_STR-FPRME sy-vline 
WA_KOMLFP_LI2_STR-FPUMZ sy-vline 
WA_KOMLFP_LI2_STR-FPUMN sy-vline 
WA_KOMLFP_LI2_STR-MEINS sy-vline 
WA_KOMLFP_LI2_STR-NTGEW sy-vline 
WA_KOMLFP_LI2_STR-BRGEW sy-vline 
WA_KOMLFP_LI2_STR-GEWEI sy-vline 
WA_KOMLFP_LI2_STR-VOLUM sy-vline 
WA_KOMLFP_LI2_STR-VOLEH sy-vline 
WA_KOMLFP_LI2_STR-NETWR sy-vline 
WA_KOMLFP_LI2_STR-BRTWR sy-vline 
WA_KOMLFP_LI2_STR-KZWI1 sy-vline 
WA_KOMLFP_LI2_STR-KZWI2 sy-vline 
WA_KOMLFP_LI2_STR-KZWI3 sy-vline 
WA_KOMLFP_LI2_STR-KZWI4 sy-vline 
WA_KOMLFP_LI2_STR-KZWI5 sy-vline 
WA_KOMLFP_LI2_STR-KZWI6 sy-vline 
WA_KOMLFP_LI2_STR-BONBA sy-vline 
WA_KOMLFP_LI2_STR-EFFWR sy-vline 
WA_KOMLFP_LI2_STR-ERNAM sy-vline 
WA_KOMLFP_LI2_STR-ERDAT sy-vline 
WA_KOMLFP_LI2_STR-ERZET sy-vline 
WA_KOMLFP_LI2_STR-KOWRR sy-vline 
WA_KOMLFP_LI2_STR-SKTOF sy-vline 
WA_KOMLFP_LI2_STR-SKFBP sy-vline 
WA_KOMLFP_LI2_STR-NETWRD sy-vline 
WA_KOMLFP_LI2_STR-BRTWRD sy-vline 
WA_KOMLFP_LI2_STR-KZWI1D sy-vline 
WA_KOMLFP_LI2_STR-KZWI2D sy-vline 
WA_KOMLFP_LI2_STR-KZWI3D sy-vline 
WA_KOMLFP_LI2_STR-KZWI4D sy-vline 
WA_KOMLFP_LI2_STR-KZWI5D sy-vline 
WA_KOMLFP_LI2_STR-KZWI6D sy-vline 
WA_KOMLFP_LI2_STR-BONBAD sy-vline 
WA_KOMLFP_LI2_STR-SKFBPD sy-vline 
WA_KOMLFP_LI2_STR-EFFWRD sy-vline 
WA_KOMLFP_LI2_STR-MWSBPD sy-vline 
WA_KOMLFP_LI2_STR-WBELNV sy-vline 
WA_KOMLFP_LI2_STR-POSNRV sy-vline 
WA_KOMLFP_LI2_STR-LFTYPV sy-vline 
WA_KOMLFP_LI2_STR-GJAHRV sy-vline 
WA_KOMLFP_LI2_STR-AKTNR sy-vline 
WA_KOMLFP_LI2_STR-LFGRU sy-vline 
WA_KOMLFP_LI2_STR-ARKTX sy-vline 
WA_KOMLFP_LI2_STR-INFNR sy-vline 
WA_KOMLFP_LI2_STR-IDNLF sy-vline 
WA_KOMLFP_LI2_STR-MWSBP sy-vline 
WA_KOMLFP_LI2_STR-TXJCD sy-vline 
WA_KOMLFP_LI2_STR-EBONF sy-vline 
WA_KOMLFP_LI2_STR-BONUS sy-vline 
WA_KOMLFP_LI2_STR-EBON2 sy-vline 
WA_KOMLFP_LI2_STR-EBON3 sy-vline 
WA_KOMLFP_LI2_STR-LTSNR sy-vline 
WA_KOMLFP_LI2_STR-EKKOL sy-vline 
WA_KOMLFP_LI2_STR-PUNEI sy-vline 
WA_KOMLFP_LI2_STR-ANZPU sy-vline 
WA_KOMLFP_LI2_STR-KOLIF sy-vline 
WA_KOMLFP_LI2_STR-NAVNW sy-vline 
WA_KOMLFP_LI2_STR-BWTAR sy-vline 
WA_KOMLFP_LI2_STR-BWTTY sy-vline 
WA_KOMLFP_LI2_STR-GSBER sy-vline 
WA_KOMLFP_LI2_STR-KOSTL sy-vline 
WA_KOMLFP_LI2_STR-PRCTR sy-vline 
WA_KOMLFP_LI2_STR-KOKRS sy-vline 
WA_KOMLFP_LI2_STR-CHARG sy-vline 
WA_KOMLFP_LI2_STR-WUVPRS sy-vline 
WA_KOMLFP_LI2_STR-WBELN_V sy-vline 
WA_KOMLFP_LI2_STR-POSNR_V sy-vline 
WA_KOMLFP_LI2_STR-FTYPV_V sy-vline 
WA_KOMLFP_LI2_STR-ITEMCAT sy-vline 
WA_KOMLFP_LI2_STR-MATBF sy-vline      INTO ld_text SEPARATED BY SPACE.

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