ABAP Select data from SAP table IUUC_TNRO_SNAP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IUUC_TNRO_SNAP
*  INTO TABLE @DATA(IT_IUUC_TNRO_SNAP2).
*--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_IUUC_TNRO_SNAP INDEX 1 INTO DATA(WA_IUUC_TNRO_SNAP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IUUC_TNRO_SNAP>-OBJECT = 1.
<IUUC_TNRO_SNAP>-DATUM = 1.
<IUUC_TNRO_SNAP>-UZEIT = 1.
<IUUC_TNRO_SNAP>-DTELSOBJ = 1.
<IUUC_TNRO_SNAP>-NRTAB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IUUC_TNRO_SNAP-NRINTFLD, sy-vline,
  WA_IUUC_TNRO_SNAP-NREXTFLD, sy-vline,
  WA_IUUC_TNRO_SNAP-NRFLD, sy-vline,
  WA_IUUC_TNRO_SNAP-NRSOBJFLD, sy-vline,
  WA_IUUC_TNRO_SNAP-NRELEFLD, sy-vline,
  WA_IUUC_TNRO_SNAP-YEARIND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IUUC_TNRO_SNAP 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_IUUC_TNRO_SNAP 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_IUUC_TNRO_SNAP INTO WA_IUUC_TNRO_SNAP.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_IUUC_TNRO_SNAP_STR, 
OBJECT TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
DTELSOBJ TYPE STRING,
NRTAB TYPE STRING,
NRINTFLD TYPE STRING,
NREXTFLD TYPE STRING,
NRFLD TYPE STRING,
NRSOBJFLD TYPE STRING,
NRELEFLD TYPE STRING,
YEARIND TYPE STRING,
DOMLEN TYPE STRING,
PERCENTAGE TYPE STRING,
CODE TYPE STRING,
TEXTIND TYPE STRING,
NRELTXTTAB TYPE STRING,
NRELTXTSOB TYPE STRING,
NRELTXTELE TYPE STRING,
NRELTXTTXT TYPE STRING,
NRELTXTLNG TYPE STRING,
BUFFER TYPE STRING,
NOIVBUFFER TYPE STRING,
NONRSWAP TYPE STRING,
RFCDEST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IUUC_TNRO_SNAP_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_IUUC_TNRO_SNAP_STR-OBJECT sy-vline 
WA_IUUC_TNRO_SNAP_STR-DATUM sy-vline 
WA_IUUC_TNRO_SNAP_STR-UZEIT sy-vline 
WA_IUUC_TNRO_SNAP_STR-DTELSOBJ sy-vline 
WA_IUUC_TNRO_SNAP_STR-NRTAB sy-vline 
WA_IUUC_TNRO_SNAP_STR-NRINTFLD sy-vline 
WA_IUUC_TNRO_SNAP_STR-NREXTFLD sy-vline 
WA_IUUC_TNRO_SNAP_STR-NRFLD sy-vline 
WA_IUUC_TNRO_SNAP_STR-NRSOBJFLD sy-vline 
WA_IUUC_TNRO_SNAP_STR-NRELEFLD sy-vline 
WA_IUUC_TNRO_SNAP_STR-YEARIND sy-vline 
WA_IUUC_TNRO_SNAP_STR-DOMLEN sy-vline 
WA_IUUC_TNRO_SNAP_STR-PERCENTAGE sy-vline 
WA_IUUC_TNRO_SNAP_STR-CODE sy-vline 
WA_IUUC_TNRO_SNAP_STR-TEXTIND sy-vline 
WA_IUUC_TNRO_SNAP_STR-NRELTXTTAB sy-vline 
WA_IUUC_TNRO_SNAP_STR-NRELTXTSOB sy-vline 
WA_IUUC_TNRO_SNAP_STR-NRELTXTELE sy-vline 
WA_IUUC_TNRO_SNAP_STR-NRELTXTTXT sy-vline 
WA_IUUC_TNRO_SNAP_STR-NRELTXTLNG sy-vline 
WA_IUUC_TNRO_SNAP_STR-BUFFER sy-vline 
WA_IUUC_TNRO_SNAP_STR-NOIVBUFFER sy-vline 
WA_IUUC_TNRO_SNAP_STR-NONRSWAP sy-vline 
WA_IUUC_TNRO_SNAP_STR-RFCDEST sy-vline      INTO ld_text SEPARATED BY SPACE.

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