ABAP Select data from SAP table MC46GT1ITM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MC46GT1ITM 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 MC46GT1ITM. 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 MC46GT1ITM 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_MC46GT1ITM TYPE STANDARD TABLE OF MC46GT1ITM,
      WA_MC46GT1ITM TYPE MC46GT1ITM,
      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: <MC46GT1ITM> TYPE MC46GT1ITM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MC46GT1ITM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MC46GT1ITM
  INTO TABLE IT_MC46GT1ITM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MC46GT1ITM
*  INTO TABLE @DATA(IT_MC46GT1ITM2).
*--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_MC46GT1ITM INDEX 1 INTO DATA(WA_MC46GT1ITM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MC46GT1ITM ASSIGNING <MC46GT1ITM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MC46GT1ITM>-AEDAT = 1.
<MC46GT1ITM>-ASIDE = 1.
<MC46GT1ITM>-AUART = 1.
<MC46GT1ITM>-AUDAT = 1.
<MC46GT1ITM>-AUGRU = 1.

ENDLOOP.

LOOP AT IT_MC46GT1ITM INTO WA_MC46GT1ITM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MC46GT1ITM-BSARK_SD, sy-vline,
  WA_MC46GT1ITM-BTBSTA, sy-vline,
  WA_MC46GT1ITM-BUDAT, sy-vline,
  WA_MC46GT1ITM-BUKRS, sy-vline,
  WA_MC46GT1ITM-CMFRE, sy-vline,
  WA_MC46GT1ITM-CMNGV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MC46GT1ITM 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_MC46GT1ITM 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_MC46GT1ITM INTO WA_MC46GT1ITM.


*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 AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_MC46GT1ITM-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC46GT1ITM-AUART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KNKLI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC46GT1ITM-KNKLI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC46GT1ITM-KNKLI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC46GT1ITM-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC46GT1ITM-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURRF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_MC46GT1ITM-KURRF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC46GT1ITM-KURRF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC46GT1ITM-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC46GT1ITM-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WE_KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC46GT1ITM-WE_KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC46GT1ITM-WE_KUNNR.
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_MC46GT1ITM_STR, 
AEDAT TYPE STRING,
ASIDE TYPE STRING,
AUART TYPE STRING,
AUDAT TYPE STRING,
AUGRU TYPE STRING,
BSARK_SD TYPE STRING,
BTBSTA TYPE STRING,
BUDAT TYPE STRING,
BUKRS TYPE STRING,
CMFRE TYPE STRING,
CMNGV TYPE STRING,
CMNUP TYPE STRING,
CMWAE TYPE STRING,
COMPLETE TYPE STRING,
CTLPC TYPE STRING,
DEST_COUNTRY TYPE STRING,
EXNUM TYPE STRING,
FAKSK_SD TYPE STRING,
GRUPP TYPE STRING,
HLAND TYPE STRING,
HWAER TYPE STRING,
KKBER TYPE STRING,
KNKLI TYPE STRING,
KOKRS TYPE STRING,
KUNNR TYPE STRING,
KURRF TYPE STRING,
KURST TYPE STRING,
KURST_SD TYPE STRING,
KVGR1_SD TYPE STRING,
KVGR2_SD TYPE STRING,
KVGR3_SD TYPE STRING,
KVGR4_SD TYPE STRING,
KVGR5_SD TYPE STRING,
LANDTX TYPE STRING,
LFSPG TYPE STRING,
LIFSK_SD TYPE STRING,
LOGSYS TYPE STRING,
PO_STEP TYPE STRING,
QUAN_COMPLETE TYPE STRING,
SIDE TYPE STRING,
SO_STEP TYPE STRING,
SPART TYPE STRING,
STCEG_L TYPE STRING,
STCEG_L_SD TYPE STRING,
STWAE TYPE STRING,
TAXK1_SD TYPE STRING,
TAXK2_SD TYPE STRING,
TCCAT TYPE STRING,
TCGROUP TYPE STRING,
TCTYP TYPE STRING,
TEW_TYPE TYPE STRING,
TKSACHB TYPE STRING,
TKWAERS TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
VKORG TYPE STRING,
VSBED_SD TYPE STRING,
VTWEG TYPE STRING,
WBPCH TYPE STRING,
WE_KUNNR TYPE STRING,
WKURS_DAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MC46GT1ITM_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_MC46GT1ITM_STR-AEDAT sy-vline 
WA_MC46GT1ITM_STR-ASIDE sy-vline 
WA_MC46GT1ITM_STR-AUART sy-vline 
WA_MC46GT1ITM_STR-AUDAT sy-vline 
WA_MC46GT1ITM_STR-AUGRU sy-vline 
WA_MC46GT1ITM_STR-BSARK_SD sy-vline 
WA_MC46GT1ITM_STR-BTBSTA sy-vline 
WA_MC46GT1ITM_STR-BUDAT sy-vline 
WA_MC46GT1ITM_STR-BUKRS sy-vline 
WA_MC46GT1ITM_STR-CMFRE sy-vline 
WA_MC46GT1ITM_STR-CMNGV sy-vline 
WA_MC46GT1ITM_STR-CMNUP sy-vline 
WA_MC46GT1ITM_STR-CMWAE sy-vline 
WA_MC46GT1ITM_STR-COMPLETE sy-vline 
WA_MC46GT1ITM_STR-CTLPC sy-vline 
WA_MC46GT1ITM_STR-DEST_COUNTRY sy-vline 
WA_MC46GT1ITM_STR-EXNUM sy-vline 
WA_MC46GT1ITM_STR-FAKSK_SD sy-vline 
WA_MC46GT1ITM_STR-GRUPP sy-vline 
WA_MC46GT1ITM_STR-HLAND sy-vline 
WA_MC46GT1ITM_STR-HWAER sy-vline 
WA_MC46GT1ITM_STR-KKBER sy-vline 
WA_MC46GT1ITM_STR-KNKLI sy-vline 
WA_MC46GT1ITM_STR-KOKRS sy-vline 
WA_MC46GT1ITM_STR-KUNNR sy-vline 
WA_MC46GT1ITM_STR-KURRF sy-vline 
WA_MC46GT1ITM_STR-KURST sy-vline 
WA_MC46GT1ITM_STR-KURST_SD sy-vline 
WA_MC46GT1ITM_STR-KVGR1_SD sy-vline 
WA_MC46GT1ITM_STR-KVGR2_SD sy-vline 
WA_MC46GT1ITM_STR-KVGR3_SD sy-vline 
WA_MC46GT1ITM_STR-KVGR4_SD sy-vline 
WA_MC46GT1ITM_STR-KVGR5_SD sy-vline 
WA_MC46GT1ITM_STR-LANDTX sy-vline 
WA_MC46GT1ITM_STR-LFSPG sy-vline 
WA_MC46GT1ITM_STR-LIFSK_SD sy-vline 
WA_MC46GT1ITM_STR-LOGSYS sy-vline 
WA_MC46GT1ITM_STR-PO_STEP sy-vline 
WA_MC46GT1ITM_STR-QUAN_COMPLETE sy-vline 
WA_MC46GT1ITM_STR-SIDE sy-vline 
WA_MC46GT1ITM_STR-SO_STEP sy-vline 
WA_MC46GT1ITM_STR-SPART sy-vline 
WA_MC46GT1ITM_STR-STCEG_L sy-vline 
WA_MC46GT1ITM_STR-STCEG_L_SD sy-vline 
WA_MC46GT1ITM_STR-STWAE sy-vline 
WA_MC46GT1ITM_STR-TAXK1_SD sy-vline 
WA_MC46GT1ITM_STR-TAXK2_SD sy-vline 
WA_MC46GT1ITM_STR-TCCAT sy-vline 
WA_MC46GT1ITM_STR-TCGROUP sy-vline 
WA_MC46GT1ITM_STR-TCTYP sy-vline 
WA_MC46GT1ITM_STR-TEW_TYPE sy-vline 
WA_MC46GT1ITM_STR-TKSACHB sy-vline 
WA_MC46GT1ITM_STR-TKWAERS sy-vline 
WA_MC46GT1ITM_STR-VKBUR sy-vline 
WA_MC46GT1ITM_STR-VKGRP sy-vline 
WA_MC46GT1ITM_STR-VKORG sy-vline 
WA_MC46GT1ITM_STR-VSBED_SD sy-vline 
WA_MC46GT1ITM_STR-VTWEG sy-vline 
WA_MC46GT1ITM_STR-WBPCH sy-vline 
WA_MC46GT1ITM_STR-WE_KUNNR sy-vline 
WA_MC46GT1ITM_STR-WKURS_DAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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