ABAP Select data from SAP table PACMCANCQTYPL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PACMCANCQTYPL
*  INTO TABLE @DATA(IT_PACMCANCQTYPL2).
*--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_PACMCANCQTYPL INDEX 1 INTO DATA(WA_PACMCANCQTYPL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PACMCANCQTYPL>-MANDT = 1.
<PACMCANCQTYPL>-TRADINGCONTRACTNUMBER = 1.
<PACMCANCQTYPL>-TRADINGCONTRACTITEM = 1.
<PACMCANCQTYPL>-CONTRACTQTYCANCELLATIONUUID = 1.
<PACMCANCQTYPL>-ACMCONTRCANCLNSQNCNMBR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PACMCANCQTYPL-PREVIOUSACMCONTRCANCLNSQNCNMBR, sy-vline,
  WA_PACMCANCQTYPL-ACMOBLIGATIONID, sy-vline,
  WA_PACMCANCQTYPL-ACMPRICINGCANCELLATIONQUANTITY, sy-vline,
  WA_PACMCANCQTYPL-BASEUNIT, sy-vline,
  WA_PACMCANCQTYPL-PREVIOUSCANCQUANTITY, sy-vline,
  WA_PACMCANCQTYPL-CANCELEDQTYPERLINE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PACMCANCQTYPL 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_PACMCANCQTYPL 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_PACMCANCQTYPL INTO WA_PACMCANCQTYPL.


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

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PACMCANCQTYPL-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PACMCANCQTYPL-BASEUNIT.
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_PACMCANCQTYPL_STR, 
MANDT TYPE STRING,
TRADINGCONTRACTNUMBER TYPE STRING,
TRADINGCONTRACTITEM TYPE STRING,
CONTRACTQTYCANCELLATIONUUID TYPE STRING,
ACMCONTRCANCLNSQNCNMBR TYPE STRING,
PREVIOUSACMCONTRCANCLNSQNCNMBR TYPE STRING,
ACMOBLIGATIONID TYPE STRING,
ACMPRICINGCANCELLATIONQUANTITY TYPE STRING,
BASEUNIT TYPE STRING,
PREVIOUSCANCQUANTITY TYPE STRING,
CANCELEDQTYPERLINE TYPE STRING,
ACMSOURCEPRICINGLOTID TYPE STRING,
ACMLUMPSUMFEE TYPE STRING,
SETTLEMENTCURRENCY TYPE STRING,
CONDITIONQUANTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PACMCANCQTYPL_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_PACMCANCQTYPL_STR-MANDT sy-vline 
WA_PACMCANCQTYPL_STR-TRADINGCONTRACTNUMBER sy-vline 
WA_PACMCANCQTYPL_STR-TRADINGCONTRACTITEM sy-vline 
WA_PACMCANCQTYPL_STR-CONTRACTQTYCANCELLATIONUUID sy-vline 
WA_PACMCANCQTYPL_STR-ACMCONTRCANCLNSQNCNMBR sy-vline 
WA_PACMCANCQTYPL_STR-PREVIOUSACMCONTRCANCLNSQNCNMBR sy-vline 
WA_PACMCANCQTYPL_STR-ACMOBLIGATIONID sy-vline 
WA_PACMCANCQTYPL_STR-ACMPRICINGCANCELLATIONQUANTITY sy-vline 
WA_PACMCANCQTYPL_STR-BASEUNIT sy-vline 
WA_PACMCANCQTYPL_STR-PREVIOUSCANCQUANTITY sy-vline 
WA_PACMCANCQTYPL_STR-CANCELEDQTYPERLINE sy-vline 
WA_PACMCANCQTYPL_STR-ACMSOURCEPRICINGLOTID sy-vline 
WA_PACMCANCQTYPL_STR-ACMLUMPSUMFEE sy-vline 
WA_PACMCANCQTYPL_STR-SETTLEMENTCURRENCY sy-vline 
WA_PACMCANCQTYPL_STR-CONDITIONQUANTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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