ABAP Select data from SAP table PC22O into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC22O 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 PC22O. 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 PC22O 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_PC22O TYPE STANDARD TABLE OF PC22O,
      WA_PC22O TYPE PC22O,
      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: <PC22O> TYPE PC22O.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC22O.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC22O
  INTO TABLE IT_PC22O.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC22O
*  INTO TABLE @DATA(IT_PC22O2).
*--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_PC22O INDEX 1 INTO DATA(WA_PC22O2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC22O ASSIGNING <PC22O>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC22O>-PRITY = 1.
<PC22O>-EXNDA = 1.
<PC22O>-BEGDA = 1.
<PC22O>-ENDDA = 1.
<PC22O>-OBJPS = 1.

ENDLOOP.

LOOP AT IT_PC22O INTO WA_PC22O.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC22O-SUBTY, sy-vline,
  WA_PC22O-REFNO, sy-vline,
  WA_PC22O-CTREF, sy-vline,
  WA_PC22O-FIXPY, sy-vline,
  WA_PC22O-ADFEE, sy-vline,
  WA_PC22O-STDPY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC22O 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_PC22O 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_PC22O INTO WA_PC22O.


*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_PC22O_STR, 
PRITY TYPE STRING,
EXNDA TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
OBJPS TYPE STRING,
SUBTY TYPE STRING,
REFNO TYPE STRING,
CTREF TYPE STRING,
FIXPY TYPE STRING,
ADFEE TYPE STRING,
STDPY TYPE STRING,
PROTE TYPE STRING,
TOTSM TYPE STRING,
TOTDN TYPE STRING,
ARRDN TYPE STRING,
ARRPE TYPE STRING,
DEDUC TYPE STRING,
EMFSL TYPE STRING,
EMFTX TYPE STRING,
PSTLZ TYPE STRING,
BKORT TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
ZWECK TYPE STRING,
ZLSCH TYPE STRING,
CAPSF TYPE STRING,
ZFPER TYPE STRING,
ZDATE TYPE STRING,
ZANZL TYPE STRING,
ZEINZ TYPE STRING,
ZEINH TYPE STRING,
MPT TYPE STRING,
IBAN TYPE STRING,
ARRES TYPE STRING,
SLTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC22O_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_PC22O_STR-PRITY sy-vline 
WA_PC22O_STR-EXNDA sy-vline 
WA_PC22O_STR-BEGDA sy-vline 
WA_PC22O_STR-ENDDA sy-vline 
WA_PC22O_STR-OBJPS sy-vline 
WA_PC22O_STR-SUBTY sy-vline 
WA_PC22O_STR-REFNO sy-vline 
WA_PC22O_STR-CTREF sy-vline 
WA_PC22O_STR-FIXPY sy-vline 
WA_PC22O_STR-ADFEE sy-vline 
WA_PC22O_STR-STDPY sy-vline 
WA_PC22O_STR-PROTE sy-vline 
WA_PC22O_STR-TOTSM sy-vline 
WA_PC22O_STR-TOTDN sy-vline 
WA_PC22O_STR-ARRDN sy-vline 
WA_PC22O_STR-ARRPE sy-vline 
WA_PC22O_STR-DEDUC sy-vline 
WA_PC22O_STR-EMFSL sy-vline 
WA_PC22O_STR-EMFTX sy-vline 
WA_PC22O_STR-PSTLZ sy-vline 
WA_PC22O_STR-BKORT sy-vline 
WA_PC22O_STR-BANKS sy-vline 
WA_PC22O_STR-BANKL sy-vline 
WA_PC22O_STR-BANKN sy-vline 
WA_PC22O_STR-ZWECK sy-vline 
WA_PC22O_STR-ZLSCH sy-vline 
WA_PC22O_STR-CAPSF sy-vline 
WA_PC22O_STR-ZFPER sy-vline 
WA_PC22O_STR-ZDATE sy-vline 
WA_PC22O_STR-ZANZL sy-vline 
WA_PC22O_STR-ZEINZ sy-vline 
WA_PC22O_STR-ZEINH sy-vline 
WA_PC22O_STR-MPT sy-vline 
WA_PC22O_STR-IBAN sy-vline 
WA_PC22O_STR-ARRES sy-vline 
WA_PC22O_STR-SLTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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