ABAP Select data from SAP table P2IN_CCO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P2IN_CCO 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 P2IN_CCO. 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 P2IN_CCO 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_P2IN_CCO TYPE STANDARD TABLE OF P2IN_CCO,
      WA_P2IN_CCO TYPE P2IN_CCO,
      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: <P2IN_CCO> TYPE P2IN_CCO.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2IN_CCO.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2IN_CCO
  INTO TABLE IT_P2IN_CCO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2IN_CCO
*  INTO TABLE @DATA(IT_P2IN_CCO2).
*--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_P2IN_CCO INDEX 1 INTO DATA(WA_P2IN_CCO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2IN_CCO ASSIGNING <P2IN_CCO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2IN_CCO>-MANDT = 1.
<P2IN_CCO>-DCT_PERNR = 1.
<P2IN_CCO>-DCT_SEQNR = 1.
<P2IN_CCO>-DCT_ROWID = 1.
<P2IN_CCO>-CNTR2 = 1.

ENDLOOP.

LOOP AT IT_P2IN_CCO INTO WA_P2IN_CCO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2IN_CCO-ENDDA, sy-vline,
  WA_P2IN_CCO-BEGDA, sy-vline,
  WA_P2IN_CCO-PKCR1, sy-vline,
  WA_P2IN_CCO-PKCR2, sy-vline,
  WA_P2IN_CCO-PKCR3, sy-vline,
  WA_P2IN_CCO-DRVNO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P2IN_CCO 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_P2IN_CCO 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_P2IN_CCO INTO WA_P2IN_CCO.


*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_P2IN_CCO_STR, 
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
CNTR2 TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
PKCR1 TYPE STRING,
PKCR2 TYPE STRING,
PKCR3 TYPE STRING,
DRVNO TYPE STRING,
DRVPK TYPE STRING,
WAEHI TYPE STRING,
CHLNG TYPE STRING,
CHGEX TYPE STRING,
AMTOY TYPE STRING,
CONTY TYPE STRING,
PKCR1_N TYPE STRING,
PKCR2_N TYPE STRING,
PKCR3_N TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P2IN_CCO_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_P2IN_CCO_STR-MANDT sy-vline 
WA_P2IN_CCO_STR-DCT_PERNR sy-vline 
WA_P2IN_CCO_STR-DCT_SEQNR sy-vline 
WA_P2IN_CCO_STR-DCT_ROWID sy-vline 
WA_P2IN_CCO_STR-CNTR2 sy-vline 
WA_P2IN_CCO_STR-ENDDA sy-vline 
WA_P2IN_CCO_STR-BEGDA sy-vline 
WA_P2IN_CCO_STR-PKCR1 sy-vline 
WA_P2IN_CCO_STR-PKCR2 sy-vline 
WA_P2IN_CCO_STR-PKCR3 sy-vline 
WA_P2IN_CCO_STR-DRVNO sy-vline 
WA_P2IN_CCO_STR-DRVPK sy-vline 
WA_P2IN_CCO_STR-WAEHI sy-vline 
WA_P2IN_CCO_STR-CHLNG sy-vline 
WA_P2IN_CCO_STR-CHGEX sy-vline 
WA_P2IN_CCO_STR-AMTOY sy-vline 
WA_P2IN_CCO_STR-CONTY sy-vline 
WA_P2IN_CCO_STR-PKCR1_N sy-vline 
WA_P2IN_CCO_STR-PKCR2_N sy-vline 
WA_P2IN_CCO_STR-PKCR3_N sy-vline      INTO ld_text SEPARATED BY SPACE.

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