ABAP Select data from SAP table PREINTOBJOCCCAL2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PREINTOBJOCCCAL2 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 PREINTOBJOCCCAL2. 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 PREINTOBJOCCCAL2 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_PREINTOBJOCCCAL2 TYPE STANDARD TABLE OF PREINTOBJOCCCAL2,
      WA_PREINTOBJOCCCAL2 TYPE PREINTOBJOCCCAL2,
      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: <PREINTOBJOCCCAL2> TYPE PREINTOBJOCCCAL2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PREINTOBJOCCCAL2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PREINTOBJOCCCAL2
  INTO TABLE IT_PREINTOBJOCCCAL2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PREINTOBJOCCCAL2
*  INTO TABLE @DATA(IT_PREINTOBJOCCCAL22).
*--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_PREINTOBJOCCCAL2 INDEX 1 INTO DATA(WA_PREINTOBJOCCCAL22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PREINTOBJOCCCAL2 ASSIGNING <PREINTOBJOCCCAL2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PREINTOBJOCCCAL2>-MANDT = 1.
<PREINTOBJOCCCAL2>-REINTEGOBJECTSTATUSOBJECT = 1.
<PREINTOBJOCCCAL2>-RECONTRACTSTATUSOBJECT = 1.
<PREINTOBJOCCCAL2>-REINTEGOBJECTINTERNALNUMBER = 1.
<PREINTOBJOCCCAL2>-RECONTRACTINTERNALNUMBER = 1.

ENDLOOP.

LOOP AT IT_PREINTOBJOCCCAL2 INTO WA_PREINTOBJOCCCAL2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PREINTOBJOCCCAL2-COMPANYCODE, sy-vline,
  WA_PREINTOBJOCCCAL2-REALESTATECONTRACT, sy-vline,
  WA_PREINTOBJOCCCAL2-REOCCUPANCYFROMDATE, sy-vline,
  WA_PREINTOBJOCCCAL2-REOCCUPANCYTODATE, sy-vline,
  WA_PREINTOBJOCCCAL2-REPREVOCCUPANCYFROMDATE, sy-vline,
  WA_PREINTOBJOCCCAL2-RENEXTOCCUPANCYTODATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PREINTOBJOCCCAL2 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_PREINTOBJOCCCAL2 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_PREINTOBJOCCCAL2 INTO WA_PREINTOBJOCCCAL2.


*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 REALESTATECONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PREINTOBJOCCCAL2-REALESTATECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PREINTOBJOCCCAL2-REALESTATECONTRACT.
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_PREINTOBJOCCCAL2_STR, 
MANDT TYPE STRING,
REINTEGOBJECTSTATUSOBJECT TYPE STRING,
RECONTRACTSTATUSOBJECT TYPE STRING,
REINTEGOBJECTINTERNALNUMBER TYPE STRING,
RECONTRACTINTERNALNUMBER TYPE STRING,
COMPANYCODE TYPE STRING,
REALESTATECONTRACT TYPE STRING,
REOCCUPANCYFROMDATE TYPE STRING,
REOCCUPANCYTODATE TYPE STRING,
REPREVOCCUPANCYFROMDATE TYPE STRING,
RENEXTOCCUPANCYTODATE TYPE STRING,
REINTEGOBJECTVALIDITYSTARTDATE TYPE STRING,
REINTEGOBJECTVALIDITYENDDATE TYPE STRING,
CONTRACTSTARTDATE TYPE STRING,
CONTRACTENDDATE TYPE STRING,
REOBJASSGMTVALIDITYSTARTDATE TYPE STRING,
REOBJASSGMTVALIDITYENDDATE TYPE STRING,
REOBJECTPOSSESSIONSTARTDATE TYPE STRING,
REOBJECTPOSSESSIONENDDATE TYPE STRING,
ISVACANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PREINTOBJOCCCAL2_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_PREINTOBJOCCCAL2_STR-MANDT sy-vline 
WA_PREINTOBJOCCCAL2_STR-REINTEGOBJECTSTATUSOBJECT sy-vline 
WA_PREINTOBJOCCCAL2_STR-RECONTRACTSTATUSOBJECT sy-vline 
WA_PREINTOBJOCCCAL2_STR-REINTEGOBJECTINTERNALNUMBER sy-vline 
WA_PREINTOBJOCCCAL2_STR-RECONTRACTINTERNALNUMBER sy-vline 
WA_PREINTOBJOCCCAL2_STR-COMPANYCODE sy-vline 
WA_PREINTOBJOCCCAL2_STR-REALESTATECONTRACT sy-vline 
WA_PREINTOBJOCCCAL2_STR-REOCCUPANCYFROMDATE sy-vline 
WA_PREINTOBJOCCCAL2_STR-REOCCUPANCYTODATE sy-vline 
WA_PREINTOBJOCCCAL2_STR-REPREVOCCUPANCYFROMDATE sy-vline 
WA_PREINTOBJOCCCAL2_STR-RENEXTOCCUPANCYTODATE sy-vline 
WA_PREINTOBJOCCCAL2_STR-REINTEGOBJECTVALIDITYSTARTDATE sy-vline 
WA_PREINTOBJOCCCAL2_STR-REINTEGOBJECTVALIDITYENDDATE sy-vline 
WA_PREINTOBJOCCCAL2_STR-CONTRACTSTARTDATE sy-vline 
WA_PREINTOBJOCCCAL2_STR-CONTRACTENDDATE sy-vline 
WA_PREINTOBJOCCCAL2_STR-REOBJASSGMTVALIDITYSTARTDATE sy-vline 
WA_PREINTOBJOCCCAL2_STR-REOBJASSGMTVALIDITYENDDATE sy-vline 
WA_PREINTOBJOCCCAL2_STR-REOBJECTPOSSESSIONSTARTDATE sy-vline 
WA_PREINTOBJOCCCAL2_STR-REOBJECTPOSSESSIONENDDATE sy-vline 
WA_PREINTOBJOCCCAL2_STR-ISVACANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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