ABAP Select data from SAP table PMD_S_PRODUCT_MESSAGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMD_S_PRODUCT_MESSAGE
*  INTO TABLE @DATA(IT_PMD_S_PRODUCT_MESSAGE2).
*--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_PMD_S_PRODUCT_MESSAGE INDEX 1 INTO DATA(WA_PMD_S_PRODUCT_MESSAGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMD_S_PRODUCT_MESSAGE>-PRODUCT = 1.
<PMD_S_PRODUCT_MESSAGE>-TABNAME = 1.
<PMD_S_PRODUCT_MESSAGE>-FIELDNAME = 1.
<PMD_S_PRODUCT_MESSAGE>-MSGID = 1.
<PMD_S_PRODUCT_MESSAGE>-MSGTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMD_S_PRODUCT_MESSAGE-MSGNO, sy-vline,
  WA_PMD_S_PRODUCT_MESSAGE-MSGV1, sy-vline,
  WA_PMD_S_PRODUCT_MESSAGE-MSGV2, sy-vline,
  WA_PMD_S_PRODUCT_MESSAGE-MSGV3, sy-vline,
  WA_PMD_S_PRODUCT_MESSAGE-MSGV4, sy-vline,
  WA_PMD_S_PRODUCT_MESSAGE-MSGTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMD_S_PRODUCT_MESSAGE 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_PMD_S_PRODUCT_MESSAGE 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_PMD_S_PRODUCT_MESSAGE INTO WA_PMD_S_PRODUCT_MESSAGE.


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

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

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

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PMD_S_PRODUCT_MESSAGE-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMD_S_PRODUCT_MESSAGE-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field BDATJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PMD_S_PRODUCT_MESSAGE-BDATJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMD_S_PRODUCT_MESSAGE-BDATJ.
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_PMD_S_PRODUCT_MESSAGE_STR, 
PRODUCT TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
MSGID TYPE STRING,
MSGTY TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
MSGTXT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
MEINH TYPE STRING,
SPRAS TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
LGNUM TYPE STRING,
LGTYP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
ALAND TYPE STRING,
ART TYPE STRING,
VERID TYPE STRING,
CURTP TYPE STRING,
POPER TYPE STRING,
BDATJ TYPE STRING,
BERID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMD_S_PRODUCT_MESSAGE_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_PMD_S_PRODUCT_MESSAGE_STR-PRODUCT sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-TABNAME sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-FIELDNAME sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-MSGID sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-MSGTY sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-MSGNO sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-MSGV1 sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-MSGV2 sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-MSGV3 sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-MSGV4 sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-MSGTXT sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-MATNR sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-WERKS sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-LGORT sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-MEINH sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-SPRAS sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-BWKEY sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-BWTAR sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-LGNUM sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-LGTYP sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-VKORG sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-VTWEG sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-ALAND sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-ART sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-VERID sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-CURTP sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-POPER sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-BDATJ sy-vline 
WA_PMD_S_PRODUCT_MESSAGE_STR-BERID sy-vline      INTO ld_text SEPARATED BY SPACE.

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