ABAP Select data from SAP table IORDER_COMPLETION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IORDER_COMPLETION
*  INTO TABLE @DATA(IT_IORDER_COMPLETION2).
*--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_IORDER_COMPLETION INDEX 1 INTO DATA(WA_IORDER_COMPLETION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IORDER_COMPLETION>-AUFNR = 1.
<IORDER_COMPLETION>-OBJNR = 1.
<IORDER_COMPLETION>-DOCNUM = 1.
<IORDER_COMPLETION>-COMPDATE = 1.
<IORDER_COMPLETION>-COMPTIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IORDER_COMPLETION-COMPTEXT, sy-vline,
  WA_IORDER_COMPLETION-LTEXT, sy-vline,
  WA_IORDER_COMPLETION-LANGU, sy-vline,
  WA_IORDER_COMPLETION-QMNUM, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_IORDER_COMPLETION 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_IORDER_COMPLETION 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_IORDER_COMPLETION INTO WA_IORDER_COMPLETION.


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

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_IORDER_COMPLETION-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IORDER_COMPLETION-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QMNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IORDER_COMPLETION-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IORDER_COMPLETION-QMNUM.
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_IORDER_COMPLETION_STR, 
AUFNR TYPE STRING,
OBJNR TYPE STRING,
DOCNUM TYPE STRING,
COMPDATE TYPE STRING,
COMPTIME TYPE STRING,
COMPTEXT TYPE STRING,
LTEXT TYPE STRING,
LANGU TYPE STRING,
QMNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IORDER_COMPLETION_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_IORDER_COMPLETION_STR-AUFNR sy-vline 
WA_IORDER_COMPLETION_STR-OBJNR sy-vline 
WA_IORDER_COMPLETION_STR-DOCNUM sy-vline 
WA_IORDER_COMPLETION_STR-COMPDATE sy-vline 
WA_IORDER_COMPLETION_STR-COMPTIME sy-vline 
WA_IORDER_COMPLETION_STR-COMPTEXT sy-vline 
WA_IORDER_COMPLETION_STR-LTEXT sy-vline 
WA_IORDER_COMPLETION_STR-LANGU sy-vline 
WA_IORDER_COMPLETION_STR-QMNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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