ABAP Select data from SAP table KOMZRKE_LI2 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP KOMZRKE_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 KOMZRKE_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 KOMZRKE_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_KOMZRKE_LI2 TYPE STANDARD TABLE OF KOMZRKE_LI2,
      WA_KOMZRKE_LI2 TYPE KOMZRKE_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: <KOMZRKE_LI2> TYPE KOMZRKE_LI2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KOMZRKE_LI2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KOMZRKE_LI2
  INTO TABLE IT_KOMZRKE_LI2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMZRKE_LI2
*  INTO TABLE @DATA(IT_KOMZRKE_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_KOMZRKE_LI2 INDEX 1 INTO DATA(WA_KOMZRKE_LI22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KOMZRKE_LI2 ASSIGNING <KOMZRKE_LI2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMZRKE_LI2>-DOCNUM = 1.
<KOMZRKE_LI2>-STATUS = 1.
<KOMZRKE_LI2>-STATXT = 1.
<KOMZRKE_LI2>-CREDAT = 1.
<KOMZRKE_LI2>-CRETIM = 1.

ENDLOOP.

LOOP AT IT_KOMZRKE_LI2 INTO WA_KOMZRKE_LI2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMZRKE_LI2-WBELN, sy-vline,
  WA_KOMZRKE_LI2-OLDNR, sy-vline,
  WA_KOMZRKE_LI2-WRART, sy-vline,
  WA_KOMZRKE_LI2-LFART, sy-vline,
  WA_KOMZRKE_LI2-LIFRE, sy-vline,
  WA_KOMZRKE_LI2-KUNRE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMZRKE_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_KOMZRKE_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_KOMZRKE_LI2 INTO WA_KOMZRKE_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_KOMZRKE_LI2-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMZRKE_LI2-WBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMZRKE_LI2-LIFRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMZRKE_LI2-LIFRE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMZRKE_LI2-KUNRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMZRKE_LI2-KUNRE.
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_KOMZRKE_LI2_STR, 
DOCNUM TYPE STRING,
STATUS TYPE STRING,
STATXT TYPE STRING,
CREDAT TYPE STRING,
CRETIM TYPE STRING,
WBELN TYPE STRING,
OLDNR TYPE STRING,
WRART TYPE STRING,
LFART TYPE STRING,
LIFRE TYPE STRING,
KUNRE TYPE STRING,
BLDAT TYPE STRING,
XBLNR TYPE STRING,
RBRTWR TYPE STRING,
WAERL TYPE STRING,
BUKRS TYPE STRING,
EKORG TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
WFDAT TYPE STRING,
ZUONR TYPE STRING,
KIDNO TYPE STRING,
ZTERM TYPE STRING,
VALTG TYPE STRING,
VALDT TYPE STRING,
ZTERMD TYPE STRING,
VALTGD TYPE STRING,
VALDTD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMZRKE_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_KOMZRKE_LI2_STR-DOCNUM sy-vline 
WA_KOMZRKE_LI2_STR-STATUS sy-vline 
WA_KOMZRKE_LI2_STR-STATXT sy-vline 
WA_KOMZRKE_LI2_STR-CREDAT sy-vline 
WA_KOMZRKE_LI2_STR-CRETIM sy-vline 
WA_KOMZRKE_LI2_STR-WBELN sy-vline 
WA_KOMZRKE_LI2_STR-OLDNR sy-vline 
WA_KOMZRKE_LI2_STR-WRART sy-vline 
WA_KOMZRKE_LI2_STR-LFART sy-vline 
WA_KOMZRKE_LI2_STR-LIFRE sy-vline 
WA_KOMZRKE_LI2_STR-KUNRE sy-vline 
WA_KOMZRKE_LI2_STR-BLDAT sy-vline 
WA_KOMZRKE_LI2_STR-XBLNR sy-vline 
WA_KOMZRKE_LI2_STR-RBRTWR sy-vline 
WA_KOMZRKE_LI2_STR-WAERL sy-vline 
WA_KOMZRKE_LI2_STR-BUKRS sy-vline 
WA_KOMZRKE_LI2_STR-EKORG sy-vline 
WA_KOMZRKE_LI2_STR-VKORG sy-vline 
WA_KOMZRKE_LI2_STR-VTWEG sy-vline 
WA_KOMZRKE_LI2_STR-SPART sy-vline 
WA_KOMZRKE_LI2_STR-WFDAT sy-vline 
WA_KOMZRKE_LI2_STR-ZUONR sy-vline 
WA_KOMZRKE_LI2_STR-KIDNO sy-vline 
WA_KOMZRKE_LI2_STR-ZTERM sy-vline 
WA_KOMZRKE_LI2_STR-VALTG sy-vline 
WA_KOMZRKE_LI2_STR-VALDT sy-vline 
WA_KOMZRKE_LI2_STR-ZTERMD sy-vline 
WA_KOMZRKE_LI2_STR-VALTGD sy-vline 
WA_KOMZRKE_LI2_STR-VALDTD sy-vline      INTO ld_text SEPARATED BY SPACE.

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