ABAP Select data from SAP table J_7L_HDLSTKOMBINATION into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7L_HDLSTKOMBINATION 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 J_7L_HDLSTKOMBINATION. 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 J_7L_HDLSTKOMBINATION 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_J_7L_HDLSTKOMBINATION TYPE STANDARD TABLE OF J_7L_HDLSTKOMBINATION,
      WA_J_7L_HDLSTKOMBINATION TYPE J_7L_HDLSTKOMBINATION,
      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: <J_7L_HDLSTKOMBINATION> TYPE J_7L_HDLSTKOMBINATION.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7L_HDLSTKOMBINATION.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7L_HDLSTKOMBINATION
  INTO TABLE IT_J_7L_HDLSTKOMBINATION.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7L_HDLSTKOMBINATION
*  INTO TABLE @DATA(IT_J_7L_HDLSTKOMBINATION2).
*--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_J_7L_HDLSTKOMBINATION INDEX 1 INTO DATA(WA_J_7L_HDLSTKOMBINATION2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7L_HDLSTKOMBINATION ASSIGNING <J_7L_HDLSTKOMBINATION>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7L_HDLSTKOMBINATION>-I_RPARTNER = 1.
<J_7L_HDLSTKOMBINATION>-I_VRPNR = 1.
<J_7L_HDLSTKOMBINATION>-I_DATAB = 1.
<J_7L_HDLSTKOMBINATION>-I_HDLSTKO = 1.
<J_7L_HDLSTKOMBINATION>-I_DATBI = 1.

ENDLOOP.

LOOP AT IT_J_7L_HDLSTKOMBINATION INTO WA_J_7L_HDLSTKOMBINATION.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7L_HDLSTKOMBINATION-VKORG, sy-vline,
  WA_J_7L_HDLSTKOMBINATION-VTWEG, sy-vline,
  WA_J_7L_HDLSTKOMBINATION-SPART, sy-vline,
  WA_J_7L_HDLSTKOMBINATION-KUMRK, sy-vline,
  WA_J_7L_HDLSTKOMBINATION-KUNNR, sy-vline,
  WA_J_7L_HDLSTKOMBINATION-EKORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7L_HDLSTKOMBINATION 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_J_7L_HDLSTKOMBINATION 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_J_7L_HDLSTKOMBINATION INTO WA_J_7L_HDLSTKOMBINATION.


*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 MATN1, internal->external for field I_VRPNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_7L_HDLSTKOMBINATION-I_VRPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7L_HDLSTKOMBINATION-I_VRPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7L_HDLSTKOMBINATION-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7L_HDLSTKOMBINATION-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7L_HDLSTKOMBINATION-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7L_HDLSTKOMBINATION-LIFNR.
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_J_7L_HDLSTKOMBINATION_STR, 
I_RPARTNER TYPE STRING,
I_VRPNR TYPE STRING,
I_DATAB TYPE STRING,
I_HDLSTKO TYPE STRING,
I_DATBI TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
KUMRK TYPE STRING,
KUNNR TYPE STRING,
EKORG TYPE STRING,
LIMRK TYPE STRING,
LIFNR TYPE STRING,
HDLSTN TYPE STRING,
KPROZ TYPE STRING,
PREISEH TYPE STRING,
WAERE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7L_HDLSTKOMBINATION_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_J_7L_HDLSTKOMBINATION_STR-I_RPARTNER sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-I_VRPNR sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-I_DATAB sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-I_HDLSTKO sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-I_DATBI sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-VKORG sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-VTWEG sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-SPART sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-KUMRK sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-KUNNR sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-EKORG sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-LIMRK sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-LIFNR sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-HDLSTN sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-KPROZ sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-PREISEH sy-vline 
WA_J_7L_HDLSTKOMBINATION_STR-WAERE sy-vline      INTO ld_text SEPARATED BY SPACE.

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