ABAP Select data from SAP table PCOLLRELDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCOLLRELDOC
*  INTO TABLE @DATA(IT_PCOLLRELDOC2).
*--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_PCOLLRELDOC INDEX 1 INTO DATA(WA_PCOLLRELDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCOLLRELDOC>-MANDT = 1.
<PCOLLRELDOC>-CASECURITYDEPOSIT = 1.
<PCOLLRELDOC>-CADOCUMENTNUMBER = 1.
<PCOLLRELDOC>-CASUBITEMNUMBER = 1.
<PCOLLRELDOC>-CAPAYMENTDOCUMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCOLLRELDOC-CAPAYMENTBPITEMNUMBER, sy-vline,
  WA_PCOLLRELDOC-CAPAYMENTDOCUMENTSUBITEM, sy-vline,
  WA_PCOLLRELDOC-CARETURNDOCUMENTNUMBER, sy-vline,
  WA_PCOLLRELDOC-CAREVERSALDOCUMENTNUMBER, sy-vline,
  WA_PCOLLRELDOC-CAINTERESTDOCUMENT, sy-vline,
  WA_PCOLLRELDOC-CAAUTHORIZATIONGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCOLLRELDOC 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_PCOLLRELDOC 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_PCOLLRELDOC INTO WA_PCOLLRELDOC.


*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 CASECURITYDEPOSIT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCOLLRELDOC-CASECURITYDEPOSIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCOLLRELDOC-CASECURITYDEPOSIT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field CAINTERESTDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCOLLRELDOC-CAINTERESTDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCOLLRELDOC-CAINTERESTDOCUMENT.
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_PCOLLRELDOC_STR, 
MANDT TYPE STRING,
CASECURITYDEPOSIT TYPE STRING,
CADOCUMENTNUMBER TYPE STRING,
CASUBITEMNUMBER TYPE STRING,
CAPAYMENTDOCUMENT TYPE STRING,
CAPAYMENTBPITEMNUMBER TYPE STRING,
CAPAYMENTDOCUMENTSUBITEM TYPE STRING,
CARETURNDOCUMENTNUMBER TYPE STRING,
CAREVERSALDOCUMENTNUMBER TYPE STRING,
CAINTERESTDOCUMENT TYPE STRING,
CAAUTHORIZATIONGROUP TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
CAREVERSEDAMTINTRANSCURRENCY TYPE STRING,
CAPAIDAMOUNTINTRANSCURRENCY TYPE STRING,
CAPAYMENTAMOUNTINPAYTCURRENCY TYPE STRING,
CARELEASEDAMTINPAYMENTCURRENCY TYPE STRING,
AMOUNTINREFUNDCURRENCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
PAYMENTCURRENCY TYPE STRING,
REFUNDCURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCOLLRELDOC_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_PCOLLRELDOC_STR-MANDT sy-vline 
WA_PCOLLRELDOC_STR-CASECURITYDEPOSIT sy-vline 
WA_PCOLLRELDOC_STR-CADOCUMENTNUMBER sy-vline 
WA_PCOLLRELDOC_STR-CASUBITEMNUMBER sy-vline 
WA_PCOLLRELDOC_STR-CAPAYMENTDOCUMENT sy-vline 
WA_PCOLLRELDOC_STR-CAPAYMENTBPITEMNUMBER sy-vline 
WA_PCOLLRELDOC_STR-CAPAYMENTDOCUMENTSUBITEM sy-vline 
WA_PCOLLRELDOC_STR-CARETURNDOCUMENTNUMBER sy-vline 
WA_PCOLLRELDOC_STR-CAREVERSALDOCUMENTNUMBER sy-vline 
WA_PCOLLRELDOC_STR-CAINTERESTDOCUMENT sy-vline 
WA_PCOLLRELDOC_STR-CAAUTHORIZATIONGROUP sy-vline 
WA_PCOLLRELDOC_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_PCOLLRELDOC_STR-CAREVERSEDAMTINTRANSCURRENCY sy-vline 
WA_PCOLLRELDOC_STR-CAPAIDAMOUNTINTRANSCURRENCY sy-vline 
WA_PCOLLRELDOC_STR-CAPAYMENTAMOUNTINPAYTCURRENCY sy-vline 
WA_PCOLLRELDOC_STR-CARELEASEDAMTINPAYMENTCURRENCY sy-vline 
WA_PCOLLRELDOC_STR-AMOUNTINREFUNDCURRENCY sy-vline 
WA_PCOLLRELDOC_STR-TRANSACTIONCURRENCY sy-vline 
WA_PCOLLRELDOC_STR-PAYMENTCURRENCY sy-vline 
WA_PCOLLRELDOC_STR-REFUNDCURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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