ABAP Select data from SAP table ALORECWELEMENTTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALORECWELEMENTTP
*  INTO TABLE @DATA(IT_ALORECWELEMENTTP2).
*--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_ALORECWELEMENTTP INDEX 1 INTO DATA(WA_ALORECWELEMENTTP2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ALORECWELEMENTTP-ALLOCELEMENTSEQUENCENUMBER, sy-vline,
  WA_ALORECWELEMENTTP-ALLOCATIONELEMENT1, sy-vline,
  WA_ALORECWELEMENTTP-ALLOCATIONELEMENT2, sy-vline,
  WA_ALORECWELEMENTTP-ALLOCATIONELEMENT3, sy-vline,
  WA_ALORECWELEMENTTP-ALLOCATIONELEMENT4, sy-vline,
  WA_ALORECWELEMENTTP-ALLOCATIONELEMENT5, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ALORECWELEMENTTP 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_ALORECWELEMENTTP 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_ALORECWELEMENTTP INTO WA_ALORECWELEMENTTP.


*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_ALORECWELEMENTTP_STR, 
MANDT TYPE STRING,
ALLOCATIONTYPE TYPE STRING,
ALLOCATIONCYCLE TYPE STRING,
ALLOCATIONCYCLESTARTDATE TYPE STRING,
ALLOCATIONCYCLESEGMENT TYPE STRING,
ALLOCELEMENTSEQUENCENUMBER TYPE STRING,
ALLOCATIONELEMENT1 TYPE STRING,
ALLOCATIONELEMENT2 TYPE STRING,
ALLOCATIONELEMENT3 TYPE STRING,
ALLOCATIONELEMENT4 TYPE STRING,
ALLOCATIONELEMENT5 TYPE STRING,
ALLOCATIONELEMENT6 TYPE STRING,
ALLOCATIONELEMENT7 TYPE STRING,
ALLOCATIONELEMENT8 TYPE STRING,
ALLOCATIONELEMENT9 TYPE STRING,
ALLOCATIONELEMENT10 TYPE STRING,
ALLOCATIONELEMENTVALUE TYPE STRING,
ALLOCSENDERRECEIVERVARIANT TYPE STRING,
ALLOCATIONCURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ALORECWELEMENTTP_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_ALORECWELEMENTTP_STR-MANDT sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONTYPE sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONCYCLE sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONCYCLESTARTDATE sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONCYCLESEGMENT sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCELEMENTSEQUENCENUMBER sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONELEMENT1 sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONELEMENT2 sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONELEMENT3 sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONELEMENT4 sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONELEMENT5 sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONELEMENT6 sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONELEMENT7 sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONELEMENT8 sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONELEMENT9 sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONELEMENT10 sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONELEMENTVALUE sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCSENDERRECEIVERVARIANT sy-vline 
WA_ALORECWELEMENTTP_STR-ALLOCATIONCURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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