ABAP Select data from SAP table ALOTDDSNDRREFTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALOTDDSNDRREFTP
*  INTO TABLE @DATA(IT_ALOTDDSNDRREFTP2).
*--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_ALOTDDSNDRREFTP INDEX 1 INTO DATA(WA_ALOTDDSNDRREFTP2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ALOTDDSNDRREFTP-ALLOCATIONSETTYPE, sy-vline,
  WA_ALOTDDSNDRREFTP-ALLOCDOCUMENTSEQUENCENUMBER, sy-vline,
  WA_ALOTDDSNDRREFTP-ALLOCATIONFIELDNAME, sy-vline,
  WA_ALOTDDSNDRREFTP-ALLOCREFDOCUMENTSEQUENCENUMBER, sy-vline,
  WA_ALOTDDSNDRREFTP-ALLOCATIONSETNAME, sy-vline,
  WA_ALOTDDSNDRREFTP-ALLOCREFERENCEFROMVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ALOTDDSNDRREFTP 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_ALOTDDSNDRREFTP 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_ALOTDDSNDRREFTP INTO WA_ALOTDDSNDRREFTP.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ALOTDDSNDRREFTP_STR, 
MANDT TYPE STRING,
ALLOCATIONTYPE TYPE STRING,
ALLOCATIONCYCLE TYPE STRING,
ALLOCATIONCYCLESTARTDATE TYPE STRING,
ALLOCATIONCYCLESEGMENT TYPE STRING,
ALLOCATIONSETTYPE TYPE STRING,
ALLOCDOCUMENTSEQUENCENUMBER TYPE STRING,
ALLOCATIONFIELDNAME TYPE STRING,
ALLOCREFDOCUMENTSEQUENCENUMBER TYPE STRING,
ALLOCATIONSETNAME TYPE STRING,
ALLOCREFERENCEFROMVALUE TYPE STRING,
ALLOCREFERENCETOVALUE TYPE STRING,
ALLOCREFERENCESOURCEFROMVALUE TYPE STRING,
ALLOCREFERENCESOURCETOVALUE TYPE STRING,
ALLOCATIONSETID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ALOTDDSNDRREFTP_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_ALOTDDSNDRREFTP_STR-MANDT sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCATIONTYPE sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCATIONCYCLE sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCATIONCYCLESTARTDATE sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCATIONCYCLESEGMENT sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCATIONSETTYPE sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCDOCUMENTSEQUENCENUMBER sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCATIONFIELDNAME sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCREFDOCUMENTSEQUENCENUMBER sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCATIONSETNAME sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCREFERENCEFROMVALUE sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCREFERENCETOVALUE sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCREFERENCESOURCEFROMVALUE sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCREFERENCESOURCETOVALUE sy-vline 
WA_ALOTDDSNDRREFTP_STR-ALLOCATIONSETID sy-vline      INTO ld_text SEPARATED BY SPACE.

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