ABAP Select data from SAP table PALOCYCCALCD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PALOCYCCALCD
*  INTO TABLE @DATA(IT_PALOCYCCALCD2).
*--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_PALOCYCCALCD INDEX 1 INTO DATA(WA_PALOCYCCALCD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PALOCYCCALCD>-MANDT = 1.
<PALOCYCCALCD>-DRAFTUUID = 1.
<PALOCYCCALCD>-PARENTDRAFTUUID = 1.
<PALOCYCCALCD>-ALLOCATIONTYPE = 1.
<PALOCYCCALCD>-ALLOCATIONCYCLE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PALOCYCCALCD-ALLOCATIONCYCLESTARTDATE, sy-vline,
  WA_PALOCYCCALCD-ALLOCATIONCYCLENAME, sy-vline,
  WA_PALOCYCCALCD-ALLOCATIONSTATUS, sy-vline,
  WA_PALOCYCCALCD-CRITICALITYCODE, sy-vline,
  WA_PALOCYCCALCD-ALLOCLASTEXECUTIONDATETIME, sy-vline,
  WA_PALOCYCCALCD-COMPANYCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PALOCYCCALCD 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_PALOCYCCALCD 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_PALOCYCCALCD INTO WA_PALOCYCCALCD.


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

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

*Conversion exit ALPHA, internal->external for field ALLOCATIONCOSTELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PALOCYCCALCD-ALLOCATIONCOSTELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PALOCYCCALCD-ALLOCATIONCOSTELEMENT.
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_PALOCYCCALCD_STR, 
MANDT TYPE STRING,
DRAFTUUID TYPE STRING,
PARENTDRAFTUUID TYPE STRING,
ALLOCATIONTYPE TYPE STRING,
ALLOCATIONCYCLE TYPE STRING,
ALLOCATIONCYCLESTARTDATE TYPE STRING,
ALLOCATIONCYCLENAME TYPE STRING,
ALLOCATIONSTATUS TYPE STRING,
CRITICALITYCODE TYPE STRING,
ALLOCLASTEXECUTIONDATETIME TYPE STRING,
COMPANYCODE TYPE STRING,
LEDGER TYPE STRING,
ALLOCATIONCYCLECATEGORY TYPE STRING,
ALLOCATIONCOSTELEMENT TYPE STRING,
ALLOCATIONACTUALPLANVARIANT TYPE STRING,
CREATEDBYUSER TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PALOCYCCALCD_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_PALOCYCCALCD_STR-MANDT sy-vline 
WA_PALOCYCCALCD_STR-DRAFTUUID sy-vline 
WA_PALOCYCCALCD_STR-PARENTDRAFTUUID sy-vline 
WA_PALOCYCCALCD_STR-ALLOCATIONTYPE sy-vline 
WA_PALOCYCCALCD_STR-ALLOCATIONCYCLE sy-vline 
WA_PALOCYCCALCD_STR-ALLOCATIONCYCLESTARTDATE sy-vline 
WA_PALOCYCCALCD_STR-ALLOCATIONCYCLENAME sy-vline 
WA_PALOCYCCALCD_STR-ALLOCATIONSTATUS sy-vline 
WA_PALOCYCCALCD_STR-CRITICALITYCODE sy-vline 
WA_PALOCYCCALCD_STR-ALLOCLASTEXECUTIONDATETIME sy-vline 
WA_PALOCYCCALCD_STR-COMPANYCODE sy-vline 
WA_PALOCYCCALCD_STR-LEDGER sy-vline 
WA_PALOCYCCALCD_STR-ALLOCATIONCYCLECATEGORY sy-vline 
WA_PALOCYCCALCD_STR-ALLOCATIONCOSTELEMENT sy-vline 
WA_PALOCYCCALCD_STR-ALLOCATIONACTUALPLANVARIANT sy-vline 
WA_PALOCYCCALCD_STR-CREATEDBYUSER sy-vline 
WA_PALOCYCCALCD_STR-HASACTIVEENTITY sy-vline 
WA_PALOCYCCALCD_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_PALOCYCCALCD_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_PALOCYCCALCD_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_PALOCYCCALCD_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_PALOCYCCALCD_STR-DRAFTENTITYOPERATIONCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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