ABAP Select data from SAP table IMIL_SERIAL_NUMBER_ASSIGN_STY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMIL_SERIAL_NUMBER_ASSIGN_STY
*  INTO TABLE @DATA(IT_IMIL_SERIAL_NUMBER_ASSIGN_STY2).
*--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_IMIL_SERIAL_NUMBER_ASSIGN_STY INDEX 1 INTO DATA(WA_IMIL_SERIAL_NUMBER_ASSIGN_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMIL_SERIAL_NUMBER_ASSIGN_STY>-INTERFACE_ELEMENT = 1.
<IMIL_SERIAL_NUMBER_ASSIGN_STY>-STOCK_ELEMENT = 1.
<IMIL_SERIAL_NUMBER_ASSIGN_STY>-MATNR = 1.
<IMIL_SERIAL_NUMBER_ASSIGN_STY>-B_WERK = 1.
<IMIL_SERIAL_NUMBER_ASSIGN_STY>-B_CHARGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-B_LAGER, sy-vline,
  WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-LIFNR, sy-vline,
  WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-KUNNR, sy-vline,
  WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-KDAUF, sy-vline,
  WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-KDPOS, sy-vline,
  WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-PS_PSP_PNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMIL_SERIAL_NUMBER_ASSIGN_STY 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_IMIL_SERIAL_NUMBER_ASSIGN_STY 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_IMIL_SERIAL_NUMBER_ASSIGN_STY INTO WA_IMIL_SERIAL_NUMBER_ASSIGN_STY.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-PS_PSP_PNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field SERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-SERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMIL_SERIAL_NUMBER_ASSIGN_STY-SERNR.
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_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR, 
INTERFACE_ELEMENT TYPE STRING,
STOCK_ELEMENT TYPE STRING,
MATNR TYPE STRING,
B_WERK TYPE STRING,
B_CHARGE TYPE STRING,
B_LAGER TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PS_PSP_PNR TYPE STRING,
EQUNR TYPE STRING,
SERNR TYPE STRING,
UII TYPE STRING,
IUID_TYPE TYPE STRING,
LBBSA TYPE STRING,
SOBKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_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_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-INTERFACE_ELEMENT sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-STOCK_ELEMENT sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-MATNR sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-B_WERK sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-B_CHARGE sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-B_LAGER sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-LIFNR sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-KUNNR sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-KDAUF sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-KDPOS sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-PS_PSP_PNR sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-EQUNR sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-SERNR sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-UII sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-IUID_TYPE sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-LBBSA sy-vline 
WA_IMIL_SERIAL_NUMBER_ASSIGN_STY_STR-SOBKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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