ABAP Select data from SAP table P00P_DEC_INT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P00P_DEC_INT 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 P00P_DEC_INT. 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 P00P_DEC_INT 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_P00P_DEC_INT TYPE STANDARD TABLE OF P00P_DEC_INT,
      WA_P00P_DEC_INT TYPE P00P_DEC_INT,
      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: <P00P_DEC_INT> TYPE P00P_DEC_INT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P00P_DEC_INT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P00P_DEC_INT
  INTO TABLE IT_P00P_DEC_INT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P00P_DEC_INT
*  INTO TABLE @DATA(IT_P00P_DEC_INT2).
*--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_P00P_DEC_INT INDEX 1 INTO DATA(WA_P00P_DEC_INT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P00P_DEC_INT ASSIGNING <P00P_DEC_INT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P00P_DEC_INT>-SRCWT = 1.
<P00P_DEC_INT>-ETYPE = 1.
<P00P_DEC_INT>-CTYPE = 1.
<P00P_DEC_INT>-FRPER = 1.
<P00P_DEC_INT>-INPER = 1.

ENDLOOP.

LOOP AT IT_P00P_DEC_INT INTO WA_P00P_DEC_INT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P00P_DEC_INT-LGART, sy-vline,
  WA_P00P_DEC_INT-CSTGR, sy-vline,
  WA_P00P_DEC_INT-CSTWT, sy-vline,
  WA_P00P_DEC_INT-CSTTO, sy-vline,
  WA_P00P_DEC_INT-CSTPE, sy-vline,
  WA_P00P_DEC_INT-CSTAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P00P_DEC_INT 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_P00P_DEC_INT 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_P00P_DEC_INT INTO WA_P00P_DEC_INT.


*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_P00P_DEC_INT_STR, 
SRCWT TYPE STRING,
ETYPE TYPE STRING,
CTYPE TYPE STRING,
FRPER TYPE STRING,
INPER TYPE STRING,
LGART TYPE STRING,
CSTGR TYPE STRING,
CSTWT TYPE STRING,
CSTTO TYPE STRING,
CSTPE TYPE STRING,
CSTAM TYPE STRING,
C0SEQ TYPE STRING,
C0KPR TYPE STRING,
C0BET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P00P_DEC_INT_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_P00P_DEC_INT_STR-SRCWT sy-vline 
WA_P00P_DEC_INT_STR-ETYPE sy-vline 
WA_P00P_DEC_INT_STR-CTYPE sy-vline 
WA_P00P_DEC_INT_STR-FRPER sy-vline 
WA_P00P_DEC_INT_STR-INPER sy-vline 
WA_P00P_DEC_INT_STR-LGART sy-vline 
WA_P00P_DEC_INT_STR-CSTGR sy-vline 
WA_P00P_DEC_INT_STR-CSTWT sy-vline 
WA_P00P_DEC_INT_STR-CSTTO sy-vline 
WA_P00P_DEC_INT_STR-CSTPE sy-vline 
WA_P00P_DEC_INT_STR-CSTAM sy-vline 
WA_P00P_DEC_INT_STR-C0SEQ sy-vline 
WA_P00P_DEC_INT_STR-C0KPR sy-vline 
WA_P00P_DEC_INT_STR-C0BET sy-vline      INTO ld_text SEPARATED BY SPACE.

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