ABAP Select data from SAP table MC46GT0HED into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MC46GT0HED 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 MC46GT0HED. 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 MC46GT0HED 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_MC46GT0HED TYPE STANDARD TABLE OF MC46GT0HED,
      WA_MC46GT0HED TYPE MC46GT0HED,
      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: <MC46GT0HED> TYPE MC46GT0HED.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MC46GT0HED.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MC46GT0HED
  INTO TABLE IT_MC46GT0HED.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MC46GT0HED
*  INTO TABLE @DATA(IT_MC46GT0HED2).
*--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_MC46GT0HED INDEX 1 INTO DATA(WA_MC46GT0HED2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MC46GT0HED ASSIGNING <MC46GT0HED>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MC46GT0HED>-ROCANCEL = 1.
<MC46GT0HED>-CHARG = 1.
<MC46GT0HED>-DOCUMENT = 1.
<MC46GT0HED>-DOC_TYPE = 1.
<MC46GT0HED>-ITEM = 1.

ENDLOOP.

LOOP AT IT_MC46GT0HED INTO WA_MC46GT0HED.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MC46GT0HED-ITEM_QUAN, sy-vline,
  WA_MC46GT0HED-LGORT, sy-vline,
  WA_MC46GT0HED-MANDT, sy-vline,
  WA_MC46GT0HED-MATKL, sy-vline,
  WA_MC46GT0HED-MATNR, sy-vline,
  WA_MC46GT0HED-NETPR_MM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MC46GT0HED 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_MC46GT0HED 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_MC46GT0HED INTO WA_MC46GT0HED.


*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 DOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC46GT0HED-DOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC46GT0HED-DOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MC46GT0HED-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC46GT0HED-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field RISK_MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MC46GT0HED-RISK_MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC46GT0HED-RISK_MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RISK_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MC46GT0HED-RISK_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC46GT0HED-RISK_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT_BUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MC46GT0HED-UNIT_BUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC46GT0HED-UNIT_BUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT_DOC
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MC46GT0HED-UNIT_DOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC46GT0HED-UNIT_DOC.
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_MC46GT0HED_STR, 
ROCANCEL TYPE STRING,
CHARG TYPE STRING,
DOCUMENT TYPE STRING,
DOC_TYPE TYPE STRING,
ITEM TYPE STRING,
ITEM_QUAN TYPE STRING,
LGORT TYPE STRING,
MANDT TYPE STRING,
MATKL TYPE STRING,
MATNR TYPE STRING,
NETPR_MM TYPE STRING,
NETPR_SD TYPE STRING,
NETWRT_IN_SDWRS TYPE STRING,
NETWRT_IN_WAERS TYPE STRING,
RISK_DATE TYPE STRING,
RISK_DATE_FROM TYPE STRING,
RISK_DATE_LOG TYPE STRING,
RISK_DATE_TO TYPE STRING,
RISK_MATERIAL TYPE STRING,
RISK_QUANTITY TYPE STRING,
RISK_RANL TYPE STRING,
RISK_TYPE TYPE STRING,
RISK_UNIT TYPE STRING,
SDWRS TYPE STRING,
SIDE TYPE STRING,
SUB_ITEM TYPE STRING,
TC_STATUS TYPE STRING,
UMN TYPE STRING,
UMZ TYPE STRING,
UNIT_BUOM TYPE STRING,
UNIT_DOC TYPE STRING,
WAERS_MM TYPE STRING,
WAERS_PURCH TYPE STRING,
WERKS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MC46GT0HED_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_MC46GT0HED_STR-ROCANCEL sy-vline 
WA_MC46GT0HED_STR-CHARG sy-vline 
WA_MC46GT0HED_STR-DOCUMENT sy-vline 
WA_MC46GT0HED_STR-DOC_TYPE sy-vline 
WA_MC46GT0HED_STR-ITEM sy-vline 
WA_MC46GT0HED_STR-ITEM_QUAN sy-vline 
WA_MC46GT0HED_STR-LGORT sy-vline 
WA_MC46GT0HED_STR-MANDT sy-vline 
WA_MC46GT0HED_STR-MATKL sy-vline 
WA_MC46GT0HED_STR-MATNR sy-vline 
WA_MC46GT0HED_STR-NETPR_MM sy-vline 
WA_MC46GT0HED_STR-NETPR_SD sy-vline 
WA_MC46GT0HED_STR-NETWRT_IN_SDWRS sy-vline 
WA_MC46GT0HED_STR-NETWRT_IN_WAERS sy-vline 
WA_MC46GT0HED_STR-RISK_DATE sy-vline 
WA_MC46GT0HED_STR-RISK_DATE_FROM sy-vline 
WA_MC46GT0HED_STR-RISK_DATE_LOG sy-vline 
WA_MC46GT0HED_STR-RISK_DATE_TO sy-vline 
WA_MC46GT0HED_STR-RISK_MATERIAL sy-vline 
WA_MC46GT0HED_STR-RISK_QUANTITY sy-vline 
WA_MC46GT0HED_STR-RISK_RANL sy-vline 
WA_MC46GT0HED_STR-RISK_TYPE sy-vline 
WA_MC46GT0HED_STR-RISK_UNIT sy-vline 
WA_MC46GT0HED_STR-SDWRS sy-vline 
WA_MC46GT0HED_STR-SIDE sy-vline 
WA_MC46GT0HED_STR-SUB_ITEM sy-vline 
WA_MC46GT0HED_STR-TC_STATUS sy-vline 
WA_MC46GT0HED_STR-UMN sy-vline 
WA_MC46GT0HED_STR-UMZ sy-vline 
WA_MC46GT0HED_STR-UNIT_BUOM sy-vline 
WA_MC46GT0HED_STR-UNIT_DOC sy-vline 
WA_MC46GT0HED_STR-WAERS_MM sy-vline 
WA_MC46GT0HED_STR-WAERS_PURCH sy-vline 
WA_MC46GT0HED_STR-WERKS sy-vline      INTO ld_text SEPARATED BY SPACE.

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