ABAP Select data from SAP table ALLOCSEGMENTTPD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALLOCSEGMENTTPD
*  INTO TABLE @DATA(IT_ALLOCSEGMENTTPD2).
*--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_ALLOCSEGMENTTPD INDEX 1 INTO DATA(WA_ALLOCSEGMENTTPD2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ALLOCSEGMENTTPD-ALLOCATIONCYCLESTARTDATE, sy-vline,
  WA_ALLOCSEGMENTTPD-ALLOCATIONCYCLESEGMENT, sy-vline,
  WA_ALLOCSEGMENTTPD-SEGMENTNAME, sy-vline,
  WA_ALLOCSEGMENTTPD-ALLOCATIONSEGMENTPOSITION, sy-vline,
  WA_ALLOCSEGMENTTPD-ALLOCATIONSENDERRULE, sy-vline,
  WA_ALLOCSEGMENTTPD-ALLOCATIONRECEIVERRULE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ALLOCSEGMENTTPD 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_ALLOCSEGMENTTPD 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_ALLOCSEGMENTTPD INTO WA_ALLOCSEGMENTTPD.


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

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

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

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

*Conversion exit CUNIT, internal->external for field UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ALLOCSEGMENTTPD-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ALLOCSEGMENTTPD-UNITOFMEASURE.
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_ALLOCSEGMENTTPD_STR, 
MANDT TYPE STRING,
DRAFTUUID TYPE STRING,
PARENTDRAFTUUID TYPE STRING,
ALLOCATIONTYPE TYPE STRING,
ALLOCATIONCYCLE TYPE STRING,
ALLOCATIONCYCLESTARTDATE TYPE STRING,
ALLOCATIONCYCLESEGMENT TYPE STRING,
SEGMENTNAME TYPE STRING,
ALLOCATIONSEGMENTPOSITION TYPE STRING,
ALLOCATIONSENDERRULE TYPE STRING,
ALLOCATIONRECEIVERRULE TYPE STRING,
ALLOCATIONSEGMENTISLOCKED TYPE STRING,
CRITICALITYCODE TYPE STRING,
ALLOCSCNGTVTRACINGFCTR TYPE STRING,
SENDERTRACINGFIELDGROUP TYPE STRING,
SENDERFIELDGROUP TYPE STRING,
RECEIVERFIELDGROUP TYPE STRING,
RECEIVERTRACINGFIELDGROUP TYPE STRING,
ALLOCATIONSENDERFIXEDFIELD1 TYPE STRING,
ALLOCATIONSENDERFIXEDFIELD2 TYPE STRING,
ALLOCATIONSENDERFIXEDFIELD3 TYPE STRING,
ALLOCATIONSENDERFIXEDFIELD4 TYPE STRING,
ALLOCATIONSENDERFIXEDFIELD5 TYPE STRING,
ALLOCATIONSENDERFIXEDFIELD6 TYPE STRING,
ALLOCATIONSENDERFIXEDFIELD7 TYPE STRING,
ALLOCATIONSENDERFIXEDFIELD8 TYPE STRING,
ALLOCATIONSENDERFIXEDFIELD9 TYPE STRING,
ALLOCATIONSENDERFIXEDFIELD10 TYPE STRING,
ALLOCATIONCURRENCY TYPE STRING,
ALLOCATIONRECEIVERFIXEDFIELD1 TYPE STRING,
ALLOCATIONRECEIVERFIXEDFIELD2 TYPE STRING,
ALLOCATIONRECEIVERFIXEDFIELD3 TYPE STRING,
ALLOCATIONRECEIVERFIXEDFIELD4 TYPE STRING,
ALLOCATIONRECEIVERFIXEDFIELD5 TYPE STRING,
ALLOCATIONRECEIVERFIXEDFIELD6 TYPE STRING,
ALLOCATIONRECEIVERFIXEDFIELD7 TYPE STRING,
ALLOCATIONRECEIVERFIXEDFIELD8 TYPE STRING,
ALLOCATIONRECEIVERFIXEDFIELD9 TYPE STRING,
ALLOCATIONRECEIVERFIXEDFIELD10 TYPE STRING,
ALLOCATIONFIELDGROUP TYPE STRING,
ASSESSMENTCOSTELEMENT TYPE STRING,
ALLOCATIONFIXEDCOSTCENTERCOST TYPE STRING,
ALLOCATIONVARIABLECOSTCTRCOST TYPE STRING,
ALLOCATIONACCOUNTASSIGNMENT TYPE STRING,
ALLOCATIONSEGMENTSORTFIELD TYPE STRING,
ALLOCISSNDREXCLASRCVR TYPE STRING,
MANIPULATIONRULEFORCYCLICMAINT TYPE STRING,
ALLOCATIONSTRUCTURE TYPE STRING,
ALLOCATIONTRANSFERSTRUCTURE TYPE STRING,
ALLOCSNDRFCTRPERCENT TYPE STRING,
ALLOCRCVRFCTRPERCENT TYPE STRING,
ALLOCSEGMENTSHAREINPERCENT TYPE STRING,
ALLOCATIONACTUALPLANVARIANT TYPE STRING,
ALLOCATIONPOSTINGTYPE TYPE STRING,
SEGMENTNAMEDESCRIPTION TYPE STRING,
ALLOCATIONREFERENCELEDGER TYPE STRING,
PLANNINGCATEGORY TYPE STRING,
UNITOFMEASURE TYPE STRING,
ALLOCATIONSENDERVALUEISNEW 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_ALLOCSEGMENTTPD_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_ALLOCSEGMENTTPD_STR-MANDT sy-vline 
WA_ALLOCSEGMENTTPD_STR-DRAFTUUID sy-vline 
WA_ALLOCSEGMENTTPD_STR-PARENTDRAFTUUID sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONTYPE sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONCYCLE sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONCYCLESTARTDATE sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONCYCLESEGMENT sy-vline 
WA_ALLOCSEGMENTTPD_STR-SEGMENTNAME sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSEGMENTPOSITION sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSENDERRULE sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONRECEIVERRULE sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSEGMENTISLOCKED sy-vline 
WA_ALLOCSEGMENTTPD_STR-CRITICALITYCODE sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCSCNGTVTRACINGFCTR sy-vline 
WA_ALLOCSEGMENTTPD_STR-SENDERTRACINGFIELDGROUP sy-vline 
WA_ALLOCSEGMENTTPD_STR-SENDERFIELDGROUP sy-vline 
WA_ALLOCSEGMENTTPD_STR-RECEIVERFIELDGROUP sy-vline 
WA_ALLOCSEGMENTTPD_STR-RECEIVERTRACINGFIELDGROUP sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSENDERFIXEDFIELD1 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSENDERFIXEDFIELD2 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSENDERFIXEDFIELD3 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSENDERFIXEDFIELD4 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSENDERFIXEDFIELD5 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSENDERFIXEDFIELD6 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSENDERFIXEDFIELD7 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSENDERFIXEDFIELD8 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSENDERFIXEDFIELD9 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSENDERFIXEDFIELD10 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONCURRENCY sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONRECEIVERFIXEDFIELD1 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONRECEIVERFIXEDFIELD2 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONRECEIVERFIXEDFIELD3 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONRECEIVERFIXEDFIELD4 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONRECEIVERFIXEDFIELD5 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONRECEIVERFIXEDFIELD6 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONRECEIVERFIXEDFIELD7 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONRECEIVERFIXEDFIELD8 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONRECEIVERFIXEDFIELD9 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONRECEIVERFIXEDFIELD10 sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONFIELDGROUP sy-vline 
WA_ALLOCSEGMENTTPD_STR-ASSESSMENTCOSTELEMENT sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONFIXEDCOSTCENTERCOST sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONVARIABLECOSTCTRCOST sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONACCOUNTASSIGNMENT sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSEGMENTSORTFIELD sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCISSNDREXCLASRCVR sy-vline 
WA_ALLOCSEGMENTTPD_STR-MANIPULATIONRULEFORCYCLICMAINT sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSTRUCTURE sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONTRANSFERSTRUCTURE sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCSNDRFCTRPERCENT sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCRCVRFCTRPERCENT sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCSEGMENTSHAREINPERCENT sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONACTUALPLANVARIANT sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONPOSTINGTYPE sy-vline 
WA_ALLOCSEGMENTTPD_STR-SEGMENTNAMEDESCRIPTION sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONREFERENCELEDGER sy-vline 
WA_ALLOCSEGMENTTPD_STR-PLANNINGCATEGORY sy-vline 
WA_ALLOCSEGMENTTPD_STR-UNITOFMEASURE sy-vline 
WA_ALLOCSEGMENTTPD_STR-ALLOCATIONSENDERVALUEISNEW sy-vline 
WA_ALLOCSEGMENTTPD_STR-HASACTIVEENTITY sy-vline 
WA_ALLOCSEGMENTTPD_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ALLOCSEGMENTTPD_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ALLOCSEGMENTTPD_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ALLOCSEGMENTTPD_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ALLOCSEGMENTTPD_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.