ABAP Select data from SAP table MMIV_SI_S_CONSIGNMENT_ITEM_PER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMIV_SI_S_CONSIGNMENT_ITEM_PER
*  INTO TABLE @DATA(IT_MMIV_SI_S_CONSIGNMENT_ITEM_PER2).
*--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_MMIV_SI_S_CONSIGNMENT_ITEM_PER INDEX 1 INTO DATA(WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMIV_SI_S_CONSIGNMENT_ITEM_PER>-BELNR = 1.
<MMIV_SI_S_CONSIGNMENT_ITEM_PER>-GJAHR = 1.
<MMIV_SI_S_CONSIGNMENT_ITEM_PER>-BUZEI = 1.
<MMIV_SI_S_CONSIGNMENT_ITEM_PER>-MBLNR = 1.
<MMIV_SI_S_CONSIGNMENT_ITEM_PER>-MJAHR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER-MBLPO, sy-vline,
  WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER-MATNR, sy-vline,
  WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER-BUKRS, sy-vline,
  WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER-WERKS, sy-vline,
  WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER-WRBTR, sy-vline,
  WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER-SHKZG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER 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_MMIV_SI_S_CONSIGNMENT_ITEM_PER 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_MMIV_SI_S_CONSIGNMENT_ITEM_PER INTO WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER-PRCTR.
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_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR, 
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
MBLPO TYPE STRING,
MATNR TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
WRBTR TYPE STRING,
SHKZG TYPE STRING,
MWSKZ TYPE STRING,
TXJCD TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
GSBER TYPE STRING,
SAKNR TYPE STRING,
PRCTR TYPE STRING,
SPGRS TYPE STRING,
DUMMY_MMIV_SI_S_ITEM_EEW_PS TYPE STRING,
TXDAT TYPE STRING,
TXDAT_FROM TYPE STRING,
TAX_COUNTRY TYPE STRING,
NODE_KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_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_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-BELNR sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-GJAHR sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-BUZEI sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-MBLNR sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-MJAHR sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-MBLPO sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-MATNR sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-BUKRS sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-WERKS sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-WRBTR sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-SHKZG sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-MWSKZ sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-TXJCD sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-MENGE sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-MEINS sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-GSBER sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-SAKNR sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-PRCTR sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-SPGRS sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-DUMMY_MMIV_SI_S_ITEM_EEW_PS sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-TXDAT sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-TXDAT_FROM sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-TAX_COUNTRY sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-NODE_KEY sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-PARENT_KEY sy-vline 
WA_MMIV_SI_S_CONSIGNMENT_ITEM_PER_STR-ROOT_KEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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