ABAP Select data from SAP table ALORCVRREFTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALORCVRREFTP
*  INTO TABLE @DATA(IT_ALORCVRREFTP2).
*--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_ALORCVRREFTP INDEX 1 INTO DATA(WA_ALORCVRREFTP2).


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

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

ENDLOOP.

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

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


*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_ALORCVRREFTP_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,
ALLOCREFKEYFIELDISINITIAL TYPE STRING,
ALLOCREFKEYFIELDISALLVALUES TYPE STRING,
ALLOCSOURCEKEYFIELDISINITIAL TYPE STRING,
ALLOCSOURCEKEYFIELDISALLVALUES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ALORCVRREFTP_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_ALORCVRREFTP_STR-MANDT sy-vline 
WA_ALORCVRREFTP_STR-ALLOCATIONTYPE sy-vline 
WA_ALORCVRREFTP_STR-ALLOCATIONCYCLE sy-vline 
WA_ALORCVRREFTP_STR-ALLOCATIONCYCLESTARTDATE sy-vline 
WA_ALORCVRREFTP_STR-ALLOCATIONCYCLESEGMENT sy-vline 
WA_ALORCVRREFTP_STR-ALLOCATIONSETTYPE sy-vline 
WA_ALORCVRREFTP_STR-ALLOCDOCUMENTSEQUENCENUMBER sy-vline 
WA_ALORCVRREFTP_STR-ALLOCATIONFIELDNAME sy-vline 
WA_ALORCVRREFTP_STR-ALLOCREFDOCUMENTSEQUENCENUMBER sy-vline 
WA_ALORCVRREFTP_STR-ALLOCATIONSETNAME sy-vline 
WA_ALORCVRREFTP_STR-ALLOCREFERENCEFROMVALUE sy-vline 
WA_ALORCVRREFTP_STR-ALLOCREFERENCETOVALUE sy-vline 
WA_ALORCVRREFTP_STR-ALLOCREFERENCESOURCEFROMVALUE sy-vline 
WA_ALORCVRREFTP_STR-ALLOCREFERENCESOURCETOVALUE sy-vline 
WA_ALORCVRREFTP_STR-ALLOCATIONSETID sy-vline 
WA_ALORCVRREFTP_STR-ALLOCREFKEYFIELDISINITIAL sy-vline 
WA_ALORCVRREFTP_STR-ALLOCREFKEYFIELDISALLVALUES sy-vline 
WA_ALORCVRREFTP_STR-ALLOCSOURCEKEYFIELDISINITIAL sy-vline 
WA_ALORCVRREFTP_STR-ALLOCSOURCEKEYFIELDISALLVALUES sy-vline      INTO ld_text SEPARATED BY SPACE.

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