ABAP Select data from SAP table ISUBTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISUBTP
*  INTO TABLE @DATA(IT_ISUBTP2).
*--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_ISUBTP INDEX 1 INTO DATA(WA_ISUBTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISUBTP>-MANDT = 1.
<ISUBTP>-SUBSTANCEUUID = 1.
<ISUBTP>-ACTIVESUBSTANCEUUID = 1.
<ISUBTP>-CREATIONUTCDATETIME = 1.
<ISUBTP>-CREATEDBYUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISUBTP-LASTCHANGEUTCDATETIME, sy-vline,
  WA_ISUBTP-LASTCHANGEDBYUSER, sy-vline,
  WA_ISUBTP-LISTEDSUBSTANCEUUID, sy-vline,
  WA_ISUBTP-SUBSTANCEINTERNALNAME, sy-vline,
  WA_ISUBTP-SUBSTANCENAME, sy-vline,
  WA_ISUBTP-COMPANYSUBSTANCENAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISUBTP 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_ISUBTP 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_ISUBTP INTO WA_ISUBTP.


*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 SPEC1, internal->external for field SPECIFICATION
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_ISUBTP-SPECIFICATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISUBTP-SPECIFICATION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SPECIFICATIONINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISUBTP-SPECIFICATIONINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISUBTP-SPECIFICATIONINTERNALID.
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_ISUBTP_STR, 
MANDT TYPE STRING,
SUBSTANCEUUID TYPE STRING,
ACTIVESUBSTANCEUUID TYPE STRING,
CREATIONUTCDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEUTCDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LISTEDSUBSTANCEUUID TYPE STRING,
SUBSTANCEINTERNALNAME TYPE STRING,
SUBSTANCENAME TYPE STRING,
COMPANYSUBSTANCENAME TYPE STRING,
RESPONSIBLEUNIT TYPE STRING,
SPECIFICATION TYPE STRING,
SPECIFICATIONINTERNALID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISUBTP_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_ISUBTP_STR-MANDT sy-vline 
WA_ISUBTP_STR-SUBSTANCEUUID sy-vline 
WA_ISUBTP_STR-ACTIVESUBSTANCEUUID sy-vline 
WA_ISUBTP_STR-CREATIONUTCDATETIME sy-vline 
WA_ISUBTP_STR-CREATEDBYUSER sy-vline 
WA_ISUBTP_STR-LASTCHANGEUTCDATETIME sy-vline 
WA_ISUBTP_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISUBTP_STR-LISTEDSUBSTANCEUUID sy-vline 
WA_ISUBTP_STR-SUBSTANCEINTERNALNAME sy-vline 
WA_ISUBTP_STR-SUBSTANCENAME sy-vline 
WA_ISUBTP_STR-COMPANYSUBSTANCENAME sy-vline 
WA_ISUBTP_STR-RESPONSIBLEUNIT sy-vline 
WA_ISUBTP_STR-SPECIFICATION sy-vline 
WA_ISUBTP_STR-SPECIFICATIONINTERNALID sy-vline      INTO ld_text SEPARATED BY SPACE.

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