ABAP Select data from SAP table REG42_ZW_INPUT_LAST_TIMSLICE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REG42_ZW_INPUT_LAST_TIMSLICE 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 REG42_ZW_INPUT_LAST_TIMSLICE. 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 REG42_ZW_INPUT_LAST_TIMSLICE 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_REG42_ZW_INPUT_LAST_TIMSLICE TYPE STANDARD TABLE OF REG42_ZW_INPUT_LAST_TIMSLICE,
      WA_REG42_ZW_INPUT_LAST_TIMSLICE TYPE REG42_ZW_INPUT_LAST_TIMSLICE,
      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: <REG42_ZW_INPUT_LAST_TIMSLICE> TYPE REG42_ZW_INPUT_LAST_TIMSLICE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_REG42_ZW_INPUT_LAST_TIMSLICE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM REG42_ZW_INPUT_LAST_TIMSLICE
  INTO TABLE IT_REG42_ZW_INPUT_LAST_TIMSLICE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REG42_ZW_INPUT_LAST_TIMSLICE
*  INTO TABLE @DATA(IT_REG42_ZW_INPUT_LAST_TIMSLICE2).
*--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_REG42_ZW_INPUT_LAST_TIMSLICE INDEX 1 INTO DATA(WA_REG42_ZW_INPUT_LAST_TIMSLICE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_REG42_ZW_INPUT_LAST_TIMSLICE ASSIGNING <REG42_ZW_INPUT_LAST_TIMSLICE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REG42_ZW_INPUT_LAST_TIMSLICE>-STANZVOR = 1.
<REG42_ZW_INPUT_LAST_TIMSLICE>-STANZNAC = 1.
<REG42_ZW_INPUT_LAST_TIMSLICE>-ANZERG = 1.
<REG42_ZW_INPUT_LAST_TIMSLICE>-UEBERVER = 1.
<REG42_ZW_INPUT_LAST_TIMSLICE>-NABLESEN = 1.

ENDLOOP.

LOOP AT IT_REG42_ZW_INPUT_LAST_TIMSLICE INTO WA_REG42_ZW_INPUT_LAST_TIMSLICE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REG42_ZW_INPUT_LAST_TIMSLICE-ZWFAKT, sy-vline,
  WA_REG42_ZW_INPUT_LAST_TIMSLICE-PRUEFKL, sy-vline,
  WA_REG42_ZW_INPUT_LAST_TIMSLICE-TEMP_AREA, sy-vline,
  WA_REG42_ZW_INPUT_LAST_TIMSLICE-PR_AREA_AI, sy-vline,
  WA_REG42_ZW_INPUT_LAST_TIMSLICE-CALOR_AREA, sy-vline,
  WA_REG42_ZW_INPUT_LAST_TIMSLICE-HOEKORR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REG42_ZW_INPUT_LAST_TIMSLICE 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_REG42_ZW_INPUT_LAST_TIMSLICE 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_REG42_ZW_INPUT_LAST_TIMSLICE INTO WA_REG42_ZW_INPUT_LAST_TIMSLICE.


*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 LUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REG42_ZW_INPUT_LAST_TIMSLICE-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG42_ZW_INPUT_LAST_TIMSLICE-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LUNIT, internal->external for field MASSBILLC6
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REG42_ZW_INPUT_LAST_TIMSLICE-MASSBILLC6
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG42_ZW_INPUT_LAST_TIMSLICE-MASSBILLC6.
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_REG42_ZW_INPUT_LAST_TIMSLICE_STR, 
STANZVOR TYPE STRING,
STANZNAC TYPE STRING,
ANZERG TYPE STRING,
UEBERVER TYPE STRING,
NABLESEN TYPE STRING,
ZWFAKT TYPE STRING,
PRUEFKL TYPE STRING,
TEMP_AREA TYPE STRING,
PR_AREA_AI TYPE STRING,
CALOR_AREA TYPE STRING,
HOEKORR TYPE STRING,
THGBER TYPE STRING,
KZAHLE TYPE STRING,
KZAHLT TYPE STRING,
GAS_PRS_AR TYPE STRING,
CRGPRESS TYPE STRING,
MEINS TYPE STRING,
ZSPANNS TYPE STRING,
ZSTROMS TYPE STRING,
ZSPANNP TYPE STRING,
ZSTROMP TYPE STRING,
GEWKEY TYPE STRING,
MASSBILLC6 TYPE STRING,
TOUPERIOD TYPE STRING,
BLIWIRK TYPE STRING,
SPARTYP TYPE STRING,
ZWTYP TYPE STRING,
INTSIZEID TYPE STRING,
VEE_CODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REG42_ZW_INPUT_LAST_TIMSLICE_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_REG42_ZW_INPUT_LAST_TIMSLICE_STR-STANZVOR sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-STANZNAC sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-ANZERG sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-UEBERVER sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-NABLESEN sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-ZWFAKT sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-PRUEFKL sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-TEMP_AREA sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-PR_AREA_AI sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-CALOR_AREA sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-HOEKORR sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-THGBER sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-KZAHLE sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-KZAHLT sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-GAS_PRS_AR sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-CRGPRESS sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-MEINS sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-ZSPANNS sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-ZSTROMS sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-ZSPANNP sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-ZSTROMP sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-GEWKEY sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-MASSBILLC6 sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-TOUPERIOD sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-BLIWIRK sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-SPARTYP sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-ZWTYP sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-INTSIZEID sy-vline 
WA_REG42_ZW_INPUT_LAST_TIMSLICE_STR-VEE_CODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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