ABAP Select data from SAP table PNO_SPK_CLS_ROOT_V01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PNO_SPK_CLS_ROOT_V01 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 PNO_SPK_CLS_ROOT_V01. 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 PNO_SPK_CLS_ROOT_V01 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_PNO_SPK_CLS_ROOT_V01 TYPE STANDARD TABLE OF PNO_SPK_CLS_ROOT_V01,
      WA_PNO_SPK_CLS_ROOT_V01 TYPE PNO_SPK_CLS_ROOT_V01,
      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: <PNO_SPK_CLS_ROOT_V01> TYPE PNO_SPK_CLS_ROOT_V01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PNO_SPK_CLS_ROOT_V01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PNO_SPK_CLS_ROOT_V01
  INTO TABLE IT_PNO_SPK_CLS_ROOT_V01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PNO_SPK_CLS_ROOT_V01
*  INTO TABLE @DATA(IT_PNO_SPK_CLS_ROOT_V012).
*--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_PNO_SPK_CLS_ROOT_V01 INDEX 1 INTO DATA(WA_PNO_SPK_CLS_ROOT_V012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PNO_SPK_CLS_ROOT_V01 ASSIGNING <PNO_SPK_CLS_ROOT_V01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PNO_SPK_CLS_ROOT_V01>-RUNID = 1.
<PNO_SPK_CLS_ROOT_V01>-PYEAR = 1.
<PNO_SPK_CLS_ROOT_V01>-PMONTH = 1.
<PNO_SPK_CLS_ROOT_V01>-PCOMMENT = 1.
<PNO_SPK_CLS_ROOT_V01>-TYPE = 1.

ENDLOOP.

LOOP AT IT_PNO_SPK_CLS_ROOT_V01 INTO WA_PNO_SPK_CLS_ROOT_V01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PNO_SPK_CLS_ROOT_V01-HVERS, sy-vline,
  WA_PNO_SPK_CLS_ROOT_V01-RAPPD, sy-vline,
  WA_PNO_SPK_CLS_ROOT_V01-ANTLJ, sy-vline,
  WA_PNO_SPK_CLS_ROOT_V01-CSUM, sy-vline,
  WA_PNO_SPK_CLS_ROOT_V01-LONSK, sy-vline,
  WA_PNO_SPK_CLS_ROOT_V01-RUNDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PNO_SPK_CLS_ROOT_V01 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_PNO_SPK_CLS_ROOT_V01 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_PNO_SPK_CLS_ROOT_V01 INTO WA_PNO_SPK_CLS_ROOT_V01.


*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_PNO_SPK_CLS_ROOT_V01_STR, 
RUNID TYPE STRING,
PYEAR TYPE STRING,
PMONTH TYPE STRING,
PCOMMENT TYPE STRING,
TYPE TYPE STRING,
HVERS TYPE STRING,
RAPPD TYPE STRING,
ANTLJ TYPE STRING,
CSUM TYPE STRING,
LONSK TYPE STRING,
RUNDATE TYPE STRING,
RUNTIME TYPE STRING,
USERID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PNO_SPK_CLS_ROOT_V01_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_PNO_SPK_CLS_ROOT_V01_STR-RUNID sy-vline 
WA_PNO_SPK_CLS_ROOT_V01_STR-PYEAR sy-vline 
WA_PNO_SPK_CLS_ROOT_V01_STR-PMONTH sy-vline 
WA_PNO_SPK_CLS_ROOT_V01_STR-PCOMMENT sy-vline 
WA_PNO_SPK_CLS_ROOT_V01_STR-TYPE sy-vline 
WA_PNO_SPK_CLS_ROOT_V01_STR-HVERS sy-vline 
WA_PNO_SPK_CLS_ROOT_V01_STR-RAPPD sy-vline 
WA_PNO_SPK_CLS_ROOT_V01_STR-ANTLJ sy-vline 
WA_PNO_SPK_CLS_ROOT_V01_STR-CSUM sy-vline 
WA_PNO_SPK_CLS_ROOT_V01_STR-LONSK sy-vline 
WA_PNO_SPK_CLS_ROOT_V01_STR-RUNDATE sy-vline 
WA_PNO_SPK_CLS_ROOT_V01_STR-RUNTIME sy-vline 
WA_PNO_SPK_CLS_ROOT_V01_STR-USERID sy-vline      INTO ld_text SEPARATED BY SPACE.

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