ABAP Select data from SAP table PCN_TPM_S_ITEM_STRUC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PCN_TPM_S_ITEM_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 PCN_TPM_S_ITEM_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 PCN_TPM_S_ITEM_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_PCN_TPM_S_ITEM_STRUC TYPE STANDARD TABLE OF PCN_TPM_S_ITEM_STRUC,
      WA_PCN_TPM_S_ITEM_STRUC TYPE PCN_TPM_S_ITEM_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: <PCN_TPM_S_ITEM_STRUC> TYPE PCN_TPM_S_ITEM_STRUC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCN_TPM_S_ITEM_STRUC
*  INTO TABLE @DATA(IT_PCN_TPM_S_ITEM_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_PCN_TPM_S_ITEM_STRUC INDEX 1 INTO DATA(WA_PCN_TPM_S_ITEM_STRUC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCN_TPM_S_ITEM_STRUC>-ITMTXT = 1.
<PCN_TPM_S_ITEM_STRUC>-ITMTYPTXT = 1.
<PCN_TPM_S_ITEM_STRUC>-MANDT = 1.
<PCN_TPM_S_ITEM_STRUC>-ITMID = 1.
<PCN_TPM_S_ITEM_STRUC>-ITMGRPID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCN_TPM_S_ITEM_STRUC-PARENT_ID, sy-vline,
  WA_PCN_TPM_S_ITEM_STRUC-CTLMOD, sy-vline,
  WA_PCN_TPM_S_ITEM_STRUC-ADJMOD, sy-vline,
  WA_PCN_TPM_S_ITEM_STRUC-STATS, sy-vline,
  WA_PCN_TPM_S_ITEM_STRUC-CALCID, sy-vline,
  WA_PCN_TPM_S_ITEM_STRUC-ITMTYPID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCN_TPM_S_ITEM_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_PCN_TPM_S_ITEM_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_PCN_TPM_S_ITEM_STRUC INTO WA_PCN_TPM_S_ITEM_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.
ENDFORM. 

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

TYPES: BEGIN OF T_PCN_TPM_S_ITEM_STRUC_STR, 
ITMTXT TYPE STRING,
ITMTYPTXT TYPE STRING,
MANDT TYPE STRING,
ITMID TYPE STRING,
ITMGRPID TYPE STRING,
PARENT_ID TYPE STRING,
CTLMOD TYPE STRING,
ADJMOD TYPE STRING,
STATS TYPE STRING,
CALCID TYPE STRING,
ITMTYPID TYPE STRING,
INHERITED TYPE STRING,
CLCMOD TYPE STRING,
ITMNO TYPE STRING,
KCURR TYPE STRING,
KWRKT TYPE STRING,
WAERS TYPE STRING,
PLNTYPID TYPE STRING,
OPERATION TYPE STRING,
CALC_BTN TYPE STRING,
SEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCN_TPM_S_ITEM_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_PCN_TPM_S_ITEM_STRUC_STR-ITMTXT sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-ITMTYPTXT sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-MANDT sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-ITMID sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-ITMGRPID sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-PARENT_ID sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-CTLMOD sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-ADJMOD sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-STATS sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-CALCID sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-ITMTYPID sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-INHERITED sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-CLCMOD sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-ITMNO sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-KCURR sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-KWRKT sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-WAERS sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-PLNTYPID sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-OPERATION sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-CALC_BTN sy-vline 
WA_PCN_TPM_S_ITEM_STRUC_STR-SEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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