ABAP Select data from SAP table LMADD_ARTNR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LMADD_ARTNR
*  INTO TABLE @DATA(IT_LMADD_ARTNR2).
*--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_LMADD_ARTNR INDEX 1 INTO DATA(WA_LMADD_ARTNR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LMADD_ARTNR>-MATNR = 1.
<LMADD_ARTNR>-MEINH = 1.
<LMADD_ARTNR>-EXFLG = 1.
<LMADD_ARTNR>-FACIN = 1.
<LMADD_ARTNR>-MAKTX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LMADD_ARTNR-MATKL, sy-vline,
  WA_LMADD_ARTNR-PRDHA, sy-vline,
  WA_LMADD_ARTNR-MFRNR, sy-vline,
  WA_LMADD_ARTNR-LIFNR, sy-vline,
  WA_LMADD_ARTNR-CLASS, sy-vline,
  WA_LMADD_ARTNR-LAYGR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LMADD_ARTNR 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_LMADD_ARTNR 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_LMADD_ARTNR INTO WA_LMADD_ARTNR.


*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 MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_LMADD_ARTNR-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LMADD_ARTNR-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LMADD_ARTNR-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LMADD_ARTNR-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_LMADD_ARTNR_STR, 
MATNR TYPE STRING,
MEINH TYPE STRING,
EXFLG TYPE STRING,
FACIN TYPE STRING,
MAKTX TYPE STRING,
MATKL TYPE STRING,
PRDHA TYPE STRING,
MFRNR TYPE STRING,
LIFNR TYPE STRING,
CLASS TYPE STRING,
LAYGR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LMADD_ARTNR_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_LMADD_ARTNR_STR-MATNR sy-vline 
WA_LMADD_ARTNR_STR-MEINH sy-vline 
WA_LMADD_ARTNR_STR-EXFLG sy-vline 
WA_LMADD_ARTNR_STR-FACIN sy-vline 
WA_LMADD_ARTNR_STR-MAKTX sy-vline 
WA_LMADD_ARTNR_STR-MATKL sy-vline 
WA_LMADD_ARTNR_STR-PRDHA sy-vline 
WA_LMADD_ARTNR_STR-MFRNR sy-vline 
WA_LMADD_ARTNR_STR-LIFNR sy-vline 
WA_LMADD_ARTNR_STR-CLASS sy-vline 
WA_LMADD_ARTNR_STR-LAYGR sy-vline      INTO ld_text SEPARATED BY SPACE.

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