ABAP Select data from SAP table /PLMI/S_NAV_MPN_ATTR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PLMI/S_NAV_MPN_ATTR 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 /PLMI/S_NAV_MPN_ATTR. 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 /PLMI/S_NAV_MPN_ATTR 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_/PLMI/S_NAV_MPN_ATTR TYPE STANDARD TABLE OF /PLMI/S_NAV_MPN_ATTR,
      WA_/PLMI/S_NAV_MPN_ATTR TYPE /PLMI/S_NAV_MPN_ATTR,
      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: </PLMI/S_NAV_MPN_ATTR> TYPE /PLMI/S_NAV_MPN_ATTR.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PLMI/S_NAV_MPN_ATTR
  INTO TABLE IT_/PLMI/S_NAV_MPN_ATTR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMI/S_NAV_MPN_ATTR
*  INTO TABLE @DATA(IT_/PLMI/S_NAV_MPN_ATTR2).
*--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_/PLMI/S_NAV_MPN_ATTR INDEX 1 INTO DATA(WA_/PLMI/S_NAV_MPN_ATTR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PLMI/S_NAV_MPN_ATTR ASSIGNING </PLMI/S_NAV_MPN_ATTR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMI/S_NAV_MPN_ATTR>-INTID = 1.
</PLMI/S_NAV_MPN_ATTR>-NAV_LOGSYS = 1.
</PLMI/S_NAV_MPN_ATTR>-DISPLAY_KEY = 1.
</PLMI/S_NAV_MPN_ATTR>-DESCRIPTION = 1.
</PLMI/S_NAV_MPN_ATTR>-INT_MATNR = 1.

ENDLOOP.

LOOP AT IT_/PLMI/S_NAV_MPN_ATTR INTO WA_/PLMI/S_NAV_MPN_ATTR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMI/S_NAV_MPN_ATTR-MPN, sy-vline,
  WA_/PLMI/S_NAV_MPN_ATTR-MPN_INFO_CAT, sy-vline,
  WA_/PLMI/S_NAV_MPN_ATTR-PIR_NO, sy-vline,
  WA_/PLMI/S_NAV_MPN_ATTR-MPN_EXT_ID, sy-vline,
  WA_/PLMI/S_NAV_MPN_ATTR-MAT_DESC, sy-vline,
  WA_/PLMI/S_NAV_MPN_ATTR-MFR_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMI/S_NAV_MPN_ATTR 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_/PLMI/S_NAV_MPN_ATTR 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_/PLMI/S_NAV_MPN_ATTR INTO WA_/PLMI/S_NAV_MPN_ATTR.


*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 NAV_LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_NAV_MPN_ATTR-NAV_LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_NAV_MPN_ATTR-NAV_LOGSYS.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit NUMCV, internal->external for field REVLV
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_/PLMI/S_NAV_MPN_ATTR-REVLV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMI/S_NAV_MPN_ATTR-REVLV.
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_/PLMI/S_NAV_MPN_ATTR_STR, 
INTID TYPE STRING,
NAV_LOGSYS TYPE STRING,
DISPLAY_KEY TYPE STRING,
DESCRIPTION TYPE STRING,
INT_MATNR TYPE STRING,
MPN TYPE STRING,
MPN_INFO_CAT TYPE STRING,
PIR_NO TYPE STRING,
MPN_EXT_ID TYPE STRING,
MAT_DESC TYPE STRING,
MFR_NO TYPE STRING,
MFR_NO_DESC TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
XPLANT_STATUS TYPE STRING,
XPLANT_DATE TYPE STRING,
PLANT TYPE STRING,
REVLV TYPE STRING,
AMPSP TYPE STRING,
BLK_SRC_SUPPLY TYPE STRING,
ERSDA TYPE STRING,
ERNAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMI/S_NAV_MPN_ATTR_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_/PLMI/S_NAV_MPN_ATTR_STR-INTID sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-NAV_LOGSYS sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-DISPLAY_KEY sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-DESCRIPTION sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-INT_MATNR sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-MPN sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-MPN_INFO_CAT sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-PIR_NO sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-MPN_EXT_ID sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-MAT_DESC sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-MFR_NO sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-MFR_NO_DESC sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-VALID_FROM sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-VALID_TO sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-XPLANT_STATUS sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-XPLANT_DATE sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-PLANT sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-REVLV sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-AMPSP sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-BLK_SRC_SUPPLY sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-ERSDA sy-vline 
WA_/PLMI/S_NAV_MPN_ATTR_STR-ERNAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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