ABAP Select data from SAP table OICF3_MIGR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OICF3_MIGR 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 OICF3_MIGR. 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 OICF3_MIGR 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_OICF3_MIGR TYPE STANDARD TABLE OF OICF3_MIGR,
      WA_OICF3_MIGR TYPE OICF3_MIGR,
      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: <OICF3_MIGR> TYPE OICF3_MIGR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OICF3_MIGR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OICF3_MIGR
  INTO TABLE IT_OICF3_MIGR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OICF3_MIGR
*  INTO TABLE @DATA(IT_OICF3_MIGR2).
*--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_OICF3_MIGR INDEX 1 INTO DATA(WA_OICF3_MIGR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OICF3_MIGR ASSIGNING <OICF3_MIGR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OICF3_MIGR>-CLIENT = 1.
<OICF3_MIGR>-LOGSYS = 1.
<OICF3_MIGR>-ITEMPATTNO = 1.
<OICF3_MIGR>-ANALYSISLVL = 1.
<OICF3_MIGR>-MULT1 = 1.

ENDLOOP.

LOOP AT IT_OICF3_MIGR INTO WA_OICF3_MIGR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OICF3_MIGR-MULT2, sy-vline,
  WA_OICF3_MIGR-QUOSRC, sy-vline,
  WA_OICF3_MIGR-QUOTYP, sy-vline,
  WA_OICF3_MIGR-QUOTNO, sy-vline,
  WA_OICF3_MIGR-TRMEXIT, sy-vline,
  WA_OICF3_MIGR-EXGRTTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OICF3_MIGR 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_OICF3_MIGR 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_OICF3_MIGR INTO WA_OICF3_MIGR.


*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 LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OICF3_MIGR-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OICF3_MIGR-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SURUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_OICF3_MIGR-SURUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OICF3_MIGR-SURUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field REFUOM1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_OICF3_MIGR-REFUOM1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OICF3_MIGR-REFUOM1.
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_OICF3_MIGR_STR, 
CLIENT TYPE STRING,
LOGSYS TYPE STRING,
ITEMPATTNO TYPE STRING,
ANALYSISLVL TYPE STRING,
MULT1 TYPE STRING,
MULT2 TYPE STRING,
QUOSRC TYPE STRING,
QUOTYP TYPE STRING,
QUOTNO TYPE STRING,
TRMEXIT TYPE STRING,
EXGRTTY TYPE STRING,
SURCHARGE TYPE STRING,
SURCURR TYPE STRING,
SURPRUN TYPE STRING,
SURUOM TYPE STRING,
RNDQUOT TYPE STRING,
RNDSUR TYPE STRING,
RNDITEM TYPE STRING,
CALCTYP TYPE STRING,
REFVAL1 TYPE STRING,
REFUOM1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OICF3_MIGR_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_OICF3_MIGR_STR-CLIENT sy-vline 
WA_OICF3_MIGR_STR-LOGSYS sy-vline 
WA_OICF3_MIGR_STR-ITEMPATTNO sy-vline 
WA_OICF3_MIGR_STR-ANALYSISLVL sy-vline 
WA_OICF3_MIGR_STR-MULT1 sy-vline 
WA_OICF3_MIGR_STR-MULT2 sy-vline 
WA_OICF3_MIGR_STR-QUOSRC sy-vline 
WA_OICF3_MIGR_STR-QUOTYP sy-vline 
WA_OICF3_MIGR_STR-QUOTNO sy-vline 
WA_OICF3_MIGR_STR-TRMEXIT sy-vline 
WA_OICF3_MIGR_STR-EXGRTTY sy-vline 
WA_OICF3_MIGR_STR-SURCHARGE sy-vline 
WA_OICF3_MIGR_STR-SURCURR sy-vline 
WA_OICF3_MIGR_STR-SURPRUN sy-vline 
WA_OICF3_MIGR_STR-SURUOM sy-vline 
WA_OICF3_MIGR_STR-RNDQUOT sy-vline 
WA_OICF3_MIGR_STR-RNDSUR sy-vline 
WA_OICF3_MIGR_STR-RNDITEM sy-vline 
WA_OICF3_MIGR_STR-CALCTYP sy-vline 
WA_OICF3_MIGR_STR-REFVAL1 sy-vline 
WA_OICF3_MIGR_STR-REFUOM1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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