ABAP Select data from SAP table I1NTUPD_STRUC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP I1NTUPD_STRUC 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 I1NTUPD_STRUC. 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 I1NTUPD_STRUC 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_I1NTUPD_STRUC TYPE STANDARD TABLE OF I1NTUPD_STRUC,
      WA_I1NTUPD_STRUC TYPE I1NTUPD_STRUC,
      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: <I1NTUPD_STRUC> TYPE I1NTUPD_STRUC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_I1NTUPD_STRUC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM I1NTUPD_STRUC
  INTO TABLE IT_I1NTUPD_STRUC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM I1NTUPD_STRUC
*  INTO TABLE @DATA(IT_I1NTUPD_STRUC2).
*--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_I1NTUPD_STRUC INDEX 1 INTO DATA(WA_I1NTUPD_STRUC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_I1NTUPD_STRUC ASSIGNING <I1NTUPD_STRUC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<I1NTUPD_STRUC>-QMNUM = 1.
<I1NTUPD_STRUC>-TXT04 = 1.
<I1NTUPD_STRUC>-STSMA = 1.
<I1NTUPD_STRUC>-FENUM = 1.
<I1NTUPD_STRUC>-MANUM = 1.

ENDLOOP.

LOOP AT IT_I1NTUPD_STRUC INTO WA_I1NTUPD_STRUC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_I1NTUPD_STRUC-COMPFLAG, sy-vline,
  WA_I1NTUPD_STRUC-COMPDATE, sy-vline,
  WA_I1NTUPD_STRUC-COMPTIME, sy-vline,
  WA_I1NTUPD_STRUC-ERLNAM, sy-vline,
  WA_I1NTUPD_STRUC-COMPTEXT, sy-vline,
  WA_I1NTUPD_STRUC-LANGU_ISO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_I1NTUPD_STRUC 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_I1NTUPD_STRUC 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_I1NTUPD_STRUC INTO WA_I1NTUPD_STRUC.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_I1NTUPD_STRUC-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_I1NTUPD_STRUC-LANGU.
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_I1NTUPD_STRUC_STR, 
QMNUM TYPE STRING,
TXT04 TYPE STRING,
STSMA TYPE STRING,
FENUM TYPE STRING,
MANUM TYPE STRING,
COMPFLAG TYPE STRING,
COMPDATE TYPE STRING,
COMPTIME TYPE STRING,
ERLNAM TYPE STRING,
COMPTEXT TYPE STRING,
LANGU_ISO TYPE STRING,
LANGU TYPE STRING,
DOCNUM TYPE STRING,
SEGNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_I1NTUPD_STRUC_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_I1NTUPD_STRUC_STR-QMNUM sy-vline 
WA_I1NTUPD_STRUC_STR-TXT04 sy-vline 
WA_I1NTUPD_STRUC_STR-STSMA sy-vline 
WA_I1NTUPD_STRUC_STR-FENUM sy-vline 
WA_I1NTUPD_STRUC_STR-MANUM sy-vline 
WA_I1NTUPD_STRUC_STR-COMPFLAG sy-vline 
WA_I1NTUPD_STRUC_STR-COMPDATE sy-vline 
WA_I1NTUPD_STRUC_STR-COMPTIME sy-vline 
WA_I1NTUPD_STRUC_STR-ERLNAM sy-vline 
WA_I1NTUPD_STRUC_STR-COMPTEXT sy-vline 
WA_I1NTUPD_STRUC_STR-LANGU_ISO sy-vline 
WA_I1NTUPD_STRUC_STR-LANGU sy-vline 
WA_I1NTUPD_STRUC_STR-DOCNUM sy-vline 
WA_I1NTUPD_STRUC_STR-SEGNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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