ABAP Select data from SAP table FIRU_IMCD_MIG_ITM_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIRU_IMCD_MIG_ITM_S
*  INTO TABLE @DATA(IT_FIRU_IMCD_MIG_ITM_S2).
*--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_FIRU_IMCD_MIG_ITM_S INDEX 1 INTO DATA(WA_FIRU_IMCD_MIG_ITM_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIRU_IMCD_MIG_ITM_S>-SENDER_TECHNICAL_ID = 1.
<FIRU_IMCD_MIG_ITM_S>-GTD_ID = 1.
<FIRU_IMCD_MIG_ITM_S>-POSNR = 1.
<FIRU_IMCD_MIG_ITM_S>-GTDPOS = 1.
<FIRU_IMCD_MIG_ITM_S>-ORDERNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIRU_IMCD_MIG_ITM_S-ORDERPOS, sy-vline,
  WA_FIRU_IMCD_MIG_ITM_S-MMDOCNUM, sy-vline,
  WA_FIRU_IMCD_MIG_ITM_S-MMDOCJAHR, sy-vline,
  WA_FIRU_IMCD_MIG_ITM_S-MMDOCPOS, sy-vline,
  WA_FIRU_IMCD_MIG_ITM_S-INDELNUM, sy-vline,
  WA_FIRU_IMCD_MIG_ITM_S-INDELPOS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIRU_IMCD_MIG_ITM_S 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_FIRU_IMCD_MIG_ITM_S 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_FIRU_IMCD_MIG_ITM_S INTO WA_FIRU_IMCD_MIG_ITM_S.


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

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

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

*Conversion exit GJAHR, internal->external for field MMDOCJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FIRU_IMCD_MIG_ITM_S-MMDOCJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIRU_IMCD_MIG_ITM_S-MMDOCJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FIRU_IMCD_MIG_ITM_S-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIRU_IMCD_MIG_ITM_S-MATNR.
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_FIRU_IMCD_MIG_ITM_S_STR, 
SENDER_TECHNICAL_ID TYPE STRING,
GTD_ID TYPE STRING,
POSNR TYPE STRING,
GTDPOS TYPE STRING,
ORDERNUM TYPE STRING,
ORDERPOS TYPE STRING,
MMDOCNUM TYPE STRING,
MMDOCJAHR TYPE STRING,
MMDOCPOS TYPE STRING,
INDELNUM TYPE STRING,
INDELPOS TYPE STRING,
HERKL TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
MATNR TYPE STRING,
CREUSER TYPE STRING,
GTDTSTAMP TYPE STRING,
CHGUSER TYPE STRING,
CHGTSTAMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIRU_IMCD_MIG_ITM_S_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_FIRU_IMCD_MIG_ITM_S_STR-SENDER_TECHNICAL_ID sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-GTD_ID sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-POSNR sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-GTDPOS sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-ORDERNUM sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-ORDERPOS sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-MMDOCNUM sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-MMDOCJAHR sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-MMDOCPOS sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-INDELNUM sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-INDELPOS sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-HERKL sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-MENGE sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-MEINS sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-MATNR sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-CREUSER sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-GTDTSTAMP sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-CHGUSER sy-vline 
WA_FIRU_IMCD_MIG_ITM_S_STR-CHGTSTAMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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