ABAP Select data from SAP table PCADOCCTNDOCBPI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCADOCCTNDOCBPI
*  INTO TABLE @DATA(IT_PCADOCCTNDOCBPI2).
*--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_PCADOCCTNDOCBPI INDEX 1 INTO DATA(WA_PCADOCCTNDOCBPI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCADOCCTNDOCBPI>-MANDT = 1.
<PCADOCCTNDOCBPI>-CADOCUMENT = 1.
<PCADOCCTNDOCBPI>-CAREPETITIONITEMNUMBER = 1.
<PCADOCCTNDOCBPI>-CABPITEMNUMBER = 1.
<PCADOCCTNDOCBPI>-CASUBITEMNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCADOCCTNDOCBPI-COMPANYCODE, sy-vline,
  WA_PCADOCCTNDOCBPI-BUSINESSAREA, sy-vline,
  WA_PCADOCCTNDOCBPI-SEGMENT, sy-vline,
  WA_PCADOCCTNDOCBPI-BUSINESSPARTNER, sy-vline,
  WA_PCADOCCTNDOCBPI-CABPITEMTEXT, sy-vline,
  WA_PCADOCCTNDOCBPI-CACLEARINGSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCADOCCTNDOCBPI 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_PCADOCCTNDOCBPI 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_PCADOCCTNDOCBPI INTO WA_PCADOCCTNDOCBPI.


*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.

*Conversion exit ALPHA, internal->external for field CADOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCADOCCTNDOCBPI-CADOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCADOCCTNDOCBPI-CADOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCADOCCTNDOCBPI-SEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCADOCCTNDOCBPI-SEGMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCADOCCTNDOCBPI-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCADOCCTNDOCBPI-BUSINESSPARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CACLEARINGDOCUMENTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCADOCCTNDOCBPI-CACLEARINGDOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCADOCCTNDOCBPI-CACLEARINGDOCUMENTNUMBER.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_PCADOCCTNDOCBPI_STR, 
MANDT TYPE STRING,
CADOCUMENT TYPE STRING,
CAREPETITIONITEMNUMBER TYPE STRING,
CABPITEMNUMBER TYPE STRING,
CASUBITEMNUMBER TYPE STRING,
COMPANYCODE TYPE STRING,
BUSINESSAREA TYPE STRING,
SEGMENT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CABPITEMTEXT TYPE STRING,
CACLEARINGSTATUS TYPE STRING,
CACASHDISCOUNTRATE TYPE STRING,
CAGROUPINGFORPAYMENT TYPE STRING,
CAGROUPINGFORPAYMENTCATEGORY TYPE STRING,
CAAPPLICATIONAREA TYPE STRING,
CAMAINTRANSACTION TYPE STRING,
CASUBTRANSACTION TYPE STRING,
CACLEARINGREASON TYPE STRING,
CACLEARINGDOCUMENTNUMBER TYPE STRING,
DOCUMENTDATE TYPE STRING,
CAPOSTINGDATE TYPE STRING,
CANETDUEDATE TYPE STRING,
CADEFERRALDATE TYPE STRING,
CACASHDISCOUNTDUEDATE TYPE STRING,
CAVALUEDATEFORCLEARING TYPE STRING,
CACLEARINGDATE TYPE STRING,
CURRENTDATE TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
CAOPENAMOUNTINTRANSACTIONCRCY TYPE STRING,
CACASHDISCOUNTAMTINTRANSCRCY TYPE STRING,
CAELIGIBLEAMOUNTFORCSHDISCINTC TYPE STRING,
CACLEARINGCURRENCY TYPE STRING,
CACLEARINGAMOUNTINCLEARINGCRCY TYPE STRING,
CACASHDISCAMOUNTINCLEARINGCRCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCADOCCTNDOCBPI_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_PCADOCCTNDOCBPI_STR-MANDT sy-vline 
WA_PCADOCCTNDOCBPI_STR-CADOCUMENT sy-vline 
WA_PCADOCCTNDOCBPI_STR-CAREPETITIONITEMNUMBER sy-vline 
WA_PCADOCCTNDOCBPI_STR-CABPITEMNUMBER sy-vline 
WA_PCADOCCTNDOCBPI_STR-CASUBITEMNUMBER sy-vline 
WA_PCADOCCTNDOCBPI_STR-COMPANYCODE sy-vline 
WA_PCADOCCTNDOCBPI_STR-BUSINESSAREA sy-vline 
WA_PCADOCCTNDOCBPI_STR-SEGMENT sy-vline 
WA_PCADOCCTNDOCBPI_STR-BUSINESSPARTNER sy-vline 
WA_PCADOCCTNDOCBPI_STR-CABPITEMTEXT sy-vline 
WA_PCADOCCTNDOCBPI_STR-CACLEARINGSTATUS sy-vline 
WA_PCADOCCTNDOCBPI_STR-CACASHDISCOUNTRATE sy-vline 
WA_PCADOCCTNDOCBPI_STR-CAGROUPINGFORPAYMENT sy-vline 
WA_PCADOCCTNDOCBPI_STR-CAGROUPINGFORPAYMENTCATEGORY sy-vline 
WA_PCADOCCTNDOCBPI_STR-CAAPPLICATIONAREA sy-vline 
WA_PCADOCCTNDOCBPI_STR-CAMAINTRANSACTION sy-vline 
WA_PCADOCCTNDOCBPI_STR-CASUBTRANSACTION sy-vline 
WA_PCADOCCTNDOCBPI_STR-CACLEARINGREASON sy-vline 
WA_PCADOCCTNDOCBPI_STR-CACLEARINGDOCUMENTNUMBER sy-vline 
WA_PCADOCCTNDOCBPI_STR-DOCUMENTDATE sy-vline 
WA_PCADOCCTNDOCBPI_STR-CAPOSTINGDATE sy-vline 
WA_PCADOCCTNDOCBPI_STR-CANETDUEDATE sy-vline 
WA_PCADOCCTNDOCBPI_STR-CADEFERRALDATE sy-vline 
WA_PCADOCCTNDOCBPI_STR-CACASHDISCOUNTDUEDATE sy-vline 
WA_PCADOCCTNDOCBPI_STR-CAVALUEDATEFORCLEARING sy-vline 
WA_PCADOCCTNDOCBPI_STR-CACLEARINGDATE sy-vline 
WA_PCADOCCTNDOCBPI_STR-CURRENTDATE sy-vline 
WA_PCADOCCTNDOCBPI_STR-TRANSACTIONCURRENCY sy-vline 
WA_PCADOCCTNDOCBPI_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_PCADOCCTNDOCBPI_STR-CAOPENAMOUNTINTRANSACTIONCRCY sy-vline 
WA_PCADOCCTNDOCBPI_STR-CACASHDISCOUNTAMTINTRANSCRCY sy-vline 
WA_PCADOCCTNDOCBPI_STR-CAELIGIBLEAMOUNTFORCSHDISCINTC sy-vline 
WA_PCADOCCTNDOCBPI_STR-CACLEARINGCURRENCY sy-vline 
WA_PCADOCCTNDOCBPI_STR-CACLEARINGAMOUNTINCLEARINGCRCY sy-vline 
WA_PCADOCCTNDOCBPI_STR-CACASHDISCAMOUNTINCLEARINGCRCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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