ABAP Select data from SAP table ALLOCCYCLE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALLOCCYCLE
*  INTO TABLE @DATA(IT_ALLOCCYCLE2).
*--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_ALLOCCYCLE INDEX 1 INTO DATA(WA_ALLOCCYCLE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ALLOCCYCLE>-MANDT = 1.
<ALLOCCYCLE>-ALLOCATIONTYPE = 1.
<ALLOCCYCLE>-ALLOCATIONCYCLE = 1.
<ALLOCCYCLE>-ALLOCATIONCYCLESTARTDATE = 1.
<ALLOCCYCLE>-ALLOCATIONCYCLEENDDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ALLOCCYCLE-ALLOCATIONSTATUS, sy-vline,
  WA_ALLOCCYCLE-ALLOCATIONFREQUENCY, sy-vline,
  WA_ALLOCCYCLE-ALLOCATIONCREATEDATE, sy-vline,
  WA_ALLOCCYCLE-CREATEDBYUSER, sy-vline,
  WA_ALLOCCYCLE-LASTCHANGEDATE, sy-vline,
  WA_ALLOCCYCLE-LASTCHANGEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ALLOCCYCLE 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_ALLOCCYCLE 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_ALLOCCYCLE INTO WA_ALLOCCYCLE.


*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_ALLOCCYCLE-LEDGER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ALLOCCYCLE-LEDGER.
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_ALLOCCYCLE_STR, 
MANDT TYPE STRING,
ALLOCATIONTYPE TYPE STRING,
ALLOCATIONCYCLE TYPE STRING,
ALLOCATIONCYCLESTARTDATE TYPE STRING,
ALLOCATIONCYCLEENDDATE TYPE STRING,
ALLOCATIONSTATUS TYPE STRING,
ALLOCATIONFREQUENCY TYPE STRING,
ALLOCATIONCREATEDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
ALLOCATIONLASTEXECUTEDDATE TYPE STRING,
ALLOCATIONLASTEXECUTEDBYUSER TYPE STRING,
ALLOCATIONLASTEXECUTIONTIME TYPE STRING,
ALLOCATIONISPROCESSED TYPE STRING,
ALLOCATIONCYCLESET TYPE STRING,
SCALENEGATIVETRACINGFACTOR TYPE STRING,
ALLOCATIONPOSTINGTYPE TYPE STRING,
ALLOCATIONACTUALPLANVARIANT TYPE STRING,
ALLOCATIONJOB TYPE STRING,
ALLOCATIONISCUMULATIVE TYPE STRING,
ALLOCISCUMULATIVEOPTIMIZED TYPE STRING,
ALLOCHASAGGREGATEDPROCESS TYPE STRING,
ALLOCATIONCYCLERUNGROUP TYPE STRING,
ALLOCATIONSUBSTITUTIONNAME TYPE STRING,
ALLOCFUNDMGMTISACTIVE TYPE STRING,
ALLOCATIONISBALANCESHEETACTIVE TYPE STRING,
ALLOCHASDERIVDFUNDFRMRCPNT TYPE STRING,
ALLOCISDERIVDFUNCAREAFRMRCPNT TYPE STRING,
ALLOCISDERIVDGRANTFRMRCPNT TYPE STRING,
ALLOCISDERIVDBUDGEDPERDRCPNT TYPE STRING,
ALLOCATIONLEDGERGROUP TYPE STRING,
ALLOCATIONISPERIODSHIFTACTIVE TYPE STRING,
ALLOCATIONPERIODDELTASIZE TYPE STRING,
ALLOCISPRODNMNTHDERIVD TYPE STRING,
ALLOCATIONISVARIABLEQUANTITY TYPE STRING,
ALLOCATIONVALUATIONTYPE TYPE STRING,
ALLOCATIONCYCLENAME TYPE STRING,
LEDGER TYPE STRING,
ALLOCATIONCYCLEISITERATIVE TYPE STRING,
CYCLEISPARALLELLEDGERENABLED TYPE STRING,
LASTCHANGETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ALLOCCYCLE_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_ALLOCCYCLE_STR-MANDT sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONTYPE sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONCYCLE sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONCYCLESTARTDATE sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONCYCLEENDDATE sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONSTATUS sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONFREQUENCY sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONCREATEDATE sy-vline 
WA_ALLOCCYCLE_STR-CREATEDBYUSER sy-vline 
WA_ALLOCCYCLE_STR-LASTCHANGEDATE sy-vline 
WA_ALLOCCYCLE_STR-LASTCHANGEDBYUSER sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONLASTEXECUTEDDATE sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONLASTEXECUTEDBYUSER sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONLASTEXECUTIONTIME sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONISPROCESSED sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONCYCLESET sy-vline 
WA_ALLOCCYCLE_STR-SCALENEGATIVETRACINGFACTOR sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONPOSTINGTYPE sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONACTUALPLANVARIANT sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONJOB sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONISCUMULATIVE sy-vline 
WA_ALLOCCYCLE_STR-ALLOCISCUMULATIVEOPTIMIZED sy-vline 
WA_ALLOCCYCLE_STR-ALLOCHASAGGREGATEDPROCESS sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONCYCLERUNGROUP sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONSUBSTITUTIONNAME sy-vline 
WA_ALLOCCYCLE_STR-ALLOCFUNDMGMTISACTIVE sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONISBALANCESHEETACTIVE sy-vline 
WA_ALLOCCYCLE_STR-ALLOCHASDERIVDFUNDFRMRCPNT sy-vline 
WA_ALLOCCYCLE_STR-ALLOCISDERIVDFUNCAREAFRMRCPNT sy-vline 
WA_ALLOCCYCLE_STR-ALLOCISDERIVDGRANTFRMRCPNT sy-vline 
WA_ALLOCCYCLE_STR-ALLOCISDERIVDBUDGEDPERDRCPNT sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONLEDGERGROUP sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONISPERIODSHIFTACTIVE sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONPERIODDELTASIZE sy-vline 
WA_ALLOCCYCLE_STR-ALLOCISPRODNMNTHDERIVD sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONISVARIABLEQUANTITY sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONVALUATIONTYPE sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONCYCLENAME sy-vline 
WA_ALLOCCYCLE_STR-LEDGER sy-vline 
WA_ALLOCCYCLE_STR-ALLOCATIONCYCLEISITERATIVE sy-vline 
WA_ALLOCCYCLE_STR-CYCLEISPARALLELLEDGERENABLED sy-vline 
WA_ALLOCCYCLE_STR-LASTCHANGETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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