ABAP Select data from SAP table PLM_ALV_120 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PLM_ALV_120 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 PLM_ALV_120. 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 PLM_ALV_120 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_PLM_ALV_120 TYPE STANDARD TABLE OF PLM_ALV_120,
      WA_PLM_ALV_120 TYPE PLM_ALV_120,
      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: <PLM_ALV_120> TYPE PLM_ALV_120.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PLM_ALV_120.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PLM_ALV_120
  INTO TABLE IT_PLM_ALV_120.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PLM_ALV_120
*  INTO TABLE @DATA(IT_PLM_ALV_1202).
*--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_PLM_ALV_120 INDEX 1 INTO DATA(WA_PLM_ALV_1202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PLM_ALV_120 ASSIGNING <PLM_ALV_120>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PLM_ALV_120>-AKTNR = 1.
<PLM_ALV_120>-AKTKT = 1.
<PLM_ALV_120>-FILIA = 1.
<PLM_ALV_120>-FINAM = 1.
<PLM_ALV_120>-STATUS = 1.

ENDLOOP.

LOOP AT IT_PLM_ALV_120 INTO WA_PLM_ALV_120.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PLM_ALV_120-ARTNR, sy-vline,
  WA_PLM_ALV_120-MAKTX, sy-vline,
  WA_PLM_ALV_120-MEBME, sy-vline,
  WA_PLM_ALV_120-PLVKP, sy-vline,
  WA_PLM_ALV_120-AKVST, sy-vline,
  WA_PLM_ALV_120-ABELN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PLM_ALV_120 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_PLM_ALV_120 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_PLM_ALV_120 INTO WA_PLM_ALV_120.


*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 AKTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PLM_ALV_120-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLM_ALV_120-AKTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FILIA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PLM_ALV_120-FILIA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLM_ALV_120-FILIA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field ARTNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PLM_ALV_120-ARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLM_ALV_120-ARTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEBME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PLM_ALV_120-MEBME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLM_ALV_120-MEBME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ABELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PLM_ALV_120-ABELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PLM_ALV_120-ABELN.
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_PLM_ALV_120_STR, 
AKTNR TYPE STRING,
AKTKT TYPE STRING,
FILIA TYPE STRING,
FINAM TYPE STRING,
STATUS TYPE STRING,
ARTNR TYPE STRING,
MAKTX TYPE STRING,
MEBME TYPE STRING,
PLVKP TYPE STRING,
AKVST TYPE STRING,
ABELN TYPE STRING,
EKZAB TYPE STRING,
EKZBI TYPE STRING,
VKZAB TYPE STRING,
VKZBI TYPE STRING,
WAELA TYPE STRING,
LIZAB TYPE STRING,
LIZBI TYPE STRING,
LSTAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PLM_ALV_120_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_PLM_ALV_120_STR-AKTNR sy-vline 
WA_PLM_ALV_120_STR-AKTKT sy-vline 
WA_PLM_ALV_120_STR-FILIA sy-vline 
WA_PLM_ALV_120_STR-FINAM sy-vline 
WA_PLM_ALV_120_STR-STATUS sy-vline 
WA_PLM_ALV_120_STR-ARTNR sy-vline 
WA_PLM_ALV_120_STR-MAKTX sy-vline 
WA_PLM_ALV_120_STR-MEBME sy-vline 
WA_PLM_ALV_120_STR-PLVKP sy-vline 
WA_PLM_ALV_120_STR-AKVST sy-vline 
WA_PLM_ALV_120_STR-ABELN sy-vline 
WA_PLM_ALV_120_STR-EKZAB sy-vline 
WA_PLM_ALV_120_STR-EKZBI sy-vline 
WA_PLM_ALV_120_STR-VKZAB sy-vline 
WA_PLM_ALV_120_STR-VKZBI sy-vline 
WA_PLM_ALV_120_STR-WAELA sy-vline 
WA_PLM_ALV_120_STR-LIZAB sy-vline 
WA_PLM_ALV_120_STR-LIZBI sy-vline 
WA_PLM_ALV_120_STR-LSTAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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