ABAP Select data from SAP table PCALCDELDATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCALCDELDATE
*  INTO TABLE @DATA(IT_PCALCDELDATE2).
*--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_PCALCDELDATE INDEX 1 INTO DATA(WA_PCALCDELDATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCALCDELDATE>-MANDT = 1.
<PCALCDELDATE>-PURCHASEREQUISITION = 1.
<PCALCDELDATE>-PURCHASEREQUISITIONITEM = 1.
<PCALCDELDATE>-DELIVERYDATE = 1.
<PCALCDELDATE>-OPENQUANTITY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCALCDELDATE-DURATIONTONEXTSTATUSINDAYS, sy-vline,
  WA_PCALCDELDATE-WEEKSTART, sy-vline,
  WA_PCALCDELDATE-WEEKEND, sy-vline,
  WA_PCALCDELDATE-SECWEEKEND, sy-vline,
  WA_PCALCDELDATE-FOURTHWEEKEND, sy-vline,
  WA_PCALCDELDATE-CALWEEK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCALCDELDATE 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_PCALCDELDATE 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_PCALCDELDATE INTO WA_PCALCDELDATE.


*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 PURCHASEREQUISITION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCALCDELDATE-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCALCDELDATE-PURCHASEREQUISITION.
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_PCALCDELDATE_STR, 
MANDT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
DELIVERYDATE TYPE STRING,
OPENQUANTITY TYPE STRING,
DURATIONTONEXTSTATUSINDAYS TYPE STRING,
WEEKSTART TYPE STRING,
WEEKEND TYPE STRING,
SECWEEKEND TYPE STRING,
FOURTHWEEKEND TYPE STRING,
CALWEEK TYPE STRING,
WEEKDAY1 TYPE STRING,
WEEKDAY2 TYPE STRING,
WEEKDAY4 TYPE STRING,
DATES TYPE STRING,
WEEKDAY5 TYPE STRING,
PURCHASEREQUISITIONTYPE TYPE STRING,
PLANT TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCALCDELDATE_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_PCALCDELDATE_STR-MANDT sy-vline 
WA_PCALCDELDATE_STR-PURCHASEREQUISITION sy-vline 
WA_PCALCDELDATE_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_PCALCDELDATE_STR-DELIVERYDATE sy-vline 
WA_PCALCDELDATE_STR-OPENQUANTITY sy-vline 
WA_PCALCDELDATE_STR-DURATIONTONEXTSTATUSINDAYS sy-vline 
WA_PCALCDELDATE_STR-WEEKSTART sy-vline 
WA_PCALCDELDATE_STR-WEEKEND sy-vline 
WA_PCALCDELDATE_STR-SECWEEKEND sy-vline 
WA_PCALCDELDATE_STR-FOURTHWEEKEND sy-vline 
WA_PCALCDELDATE_STR-CALWEEK sy-vline 
WA_PCALCDELDATE_STR-WEEKDAY1 sy-vline 
WA_PCALCDELDATE_STR-WEEKDAY2 sy-vline 
WA_PCALCDELDATE_STR-WEEKDAY4 sy-vline 
WA_PCALCDELDATE_STR-DATES sy-vline 
WA_PCALCDELDATE_STR-WEEKDAY5 sy-vline 
WA_PCALCDELDATE_STR-PURCHASEREQUISITIONTYPE sy-vline 
WA_PCALCDELDATE_STR-PLANT sy-vline 
WA_PCALCDELDATE_STR-PURCHASINGORGANIZATION sy-vline 
WA_PCALCDELDATE_STR-PURCHASINGGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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