ABAP Select data from SAP table ISPRODSPEC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISPRODSPEC
*  INTO TABLE @DATA(IT_ISPRODSPEC2).
*--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_ISPRODSPEC INDEX 1 INTO DATA(WA_ISPRODSPEC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISPRODSPEC>-MANDT = 1.
<ISPRODSPEC>-SUBSCRPNPRODSPECUUID = 1.
<ISPRODSPEC>-CREATEDBYUSER = 1.
<ISPRODSPEC>-CREATIONDATETIME = 1.
<ISPRODSPEC>-LASTCHANGEDBYUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISPRODSPEC-LASTCHANGEDATETIME, sy-vline,
  WA_ISPRODSPEC-PRODUCT, sy-vline,
  WA_ISPRODSPEC-PRODUCTUUID, sy-vline,
  WA_ISPRODSPEC-PRODUCTTYPE, sy-vline,
  WA_ISPRODSPEC-PRODUCTGROUP, sy-vline,
  WA_ISPRODSPEC-AUTHORIZATIONGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISPRODSPEC 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_ISPRODSPEC 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_ISPRODSPEC INTO WA_ISPRODSPEC.


*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_ISPRODSPEC-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISPRODSPEC-PRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISPRODSPEC-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISPRODSPEC-BASEUNIT.
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_ISPRODSPEC_STR, 
MANDT TYPE STRING,
SUBSCRPNPRODSPECUUID TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
PRODUCT TYPE STRING,
PRODUCTUUID TYPE STRING,
PRODUCTTYPE TYPE STRING,
PRODUCTGROUP TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
SUBSCRPNPRODTECHRSCESCHEMA TYPE STRING,
PRODUCTISCONFIGURABLE TYPE STRING,
BASEUNIT TYPE STRING,
CABILLGCYCLE TYPE STRING,
SUBSCRPNPRODBILLGCYCDETN TYPE STRING,
SUBSCRIPTIONPRODUCTPURPOSE TYPE STRING,
CONTRACTAUTORENEWALTYPE TYPE STRING,
SUBSCRPNPRODTECHRSCEISACTIVE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISPRODSPEC_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_ISPRODSPEC_STR-MANDT sy-vline 
WA_ISPRODSPEC_STR-SUBSCRPNPRODSPECUUID sy-vline 
WA_ISPRODSPEC_STR-CREATEDBYUSER sy-vline 
WA_ISPRODSPEC_STR-CREATIONDATETIME sy-vline 
WA_ISPRODSPEC_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISPRODSPEC_STR-LASTCHANGEDATETIME sy-vline 
WA_ISPRODSPEC_STR-PRODUCT sy-vline 
WA_ISPRODSPEC_STR-PRODUCTUUID sy-vline 
WA_ISPRODSPEC_STR-PRODUCTTYPE sy-vline 
WA_ISPRODSPEC_STR-PRODUCTGROUP sy-vline 
WA_ISPRODSPEC_STR-AUTHORIZATIONGROUP sy-vline 
WA_ISPRODSPEC_STR-SUBSCRPNPRODTECHRSCESCHEMA sy-vline 
WA_ISPRODSPEC_STR-PRODUCTISCONFIGURABLE sy-vline 
WA_ISPRODSPEC_STR-BASEUNIT sy-vline 
WA_ISPRODSPEC_STR-CABILLGCYCLE sy-vline 
WA_ISPRODSPEC_STR-SUBSCRPNPRODBILLGCYCDETN sy-vline 
WA_ISPRODSPEC_STR-SUBSCRIPTIONPRODUCTPURPOSE sy-vline 
WA_ISPRODSPEC_STR-CONTRACTAUTORENEWALTYPE sy-vline 
WA_ISPRODSPEC_STR-SUBSCRPNPRODTECHRSCEISACTIVE sy-vline      INTO ld_text SEPARATED BY SPACE.

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