ABAP Select data from SAP table PCTRITEMRELHIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCTRITEMRELHIST
*  INTO TABLE @DATA(IT_PCTRITEMRELHIST2).
*--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_PCTRITEMRELHIST INDEX 1 INTO DATA(WA_PCTRITEMRELHIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCTRITEMRELHIST>-MANDT = 1.
<PCTRITEMRELHIST>-PURCHASECONTRACT = 1.
<PCTRITEMRELHIST>-PURCHASECONTRACTITEM = 1.
<PCTRITEMRELHIST>-RELEASEORDER = 1.
<PCTRITEMRELHIST>-RELEASEORDERITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCTRITEMRELHIST-RELEASEORDERITEMORDERQUANTITY, sy-vline,
  WA_PCTRITEMRELHIST-RELEASEORDERITEMQUANTITYUNIT, sy-vline,
  WA_PCTRITEMRELHIST-RELEASEORDERITEMNETAMOUNT, sy-vline,
  WA_PCTRITEMRELHIST-RELEASEORDERCURRENCY, sy-vline,
  WA_PCTRITEMRELHIST-RELEASEORDERITEMISDELETED, sy-vline,
  WA_PCTRITEMRELHIST-INVOICEDAMOUNTINDSPCURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCTRITEMRELHIST 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_PCTRITEMRELHIST 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_PCTRITEMRELHIST INTO WA_PCTRITEMRELHIST.


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

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

*Conversion exit CUNIT, internal->external for field RELEASEORDERITEMQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PCTRITEMRELHIST-RELEASEORDERITEMQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCTRITEMRELHIST-RELEASEORDERITEMQUANTITYUNIT.
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_PCTRITEMRELHIST_STR, 
MANDT TYPE STRING,
PURCHASECONTRACT TYPE STRING,
PURCHASECONTRACTITEM TYPE STRING,
RELEASEORDER TYPE STRING,
RELEASEORDERITEM TYPE STRING,
RELEASEORDERITEMORDERQUANTITY TYPE STRING,
RELEASEORDERITEMQUANTITYUNIT TYPE STRING,
RELEASEORDERITEMNETAMOUNT TYPE STRING,
RELEASEORDERCURRENCY TYPE STRING,
RELEASEORDERITEMISDELETED TYPE STRING,
INVOICEDAMOUNTINDSPCURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCTRITEMRELHIST_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_PCTRITEMRELHIST_STR-MANDT sy-vline 
WA_PCTRITEMRELHIST_STR-PURCHASECONTRACT sy-vline 
WA_PCTRITEMRELHIST_STR-PURCHASECONTRACTITEM sy-vline 
WA_PCTRITEMRELHIST_STR-RELEASEORDER sy-vline 
WA_PCTRITEMRELHIST_STR-RELEASEORDERITEM sy-vline 
WA_PCTRITEMRELHIST_STR-RELEASEORDERITEMORDERQUANTITY sy-vline 
WA_PCTRITEMRELHIST_STR-RELEASEORDERITEMQUANTITYUNIT sy-vline 
WA_PCTRITEMRELHIST_STR-RELEASEORDERITEMNETAMOUNT sy-vline 
WA_PCTRITEMRELHIST_STR-RELEASEORDERCURRENCY sy-vline 
WA_PCTRITEMRELHIST_STR-RELEASEORDERITEMISDELETED sy-vline 
WA_PCTRITEMRELHIST_STR-INVOICEDAMOUNTINDSPCURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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