ABAP Select data from SAP table IEWMHUHDRC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IEWMHUHDRC
*  INTO TABLE @DATA(IT_IEWMHUHDRC2).
*--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_IEWMHUHDRC INDEX 1 INTO DATA(WA_IEWMHUHDRC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IEWMHUHDRC>-MANDT = 1.
<IEWMHUHDRC>-HANDLINGUNITEXTERNALID = 1.
<IEWMHUHDRC>-WAREHOUSE = 1.
<IEWMHUHDRC>-PACKAGINGMATERIAL = 1.
<IEWMHUHDRC>-PACKAGINGMATERIALTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IEWMHUHDRC-STORAGETYPE, sy-vline,
  WA_IEWMHUHDRC-HANDLINGUNITSTATUS, sy-vline,
  WA_IEWMHUHDRC-STORAGESECTION, sy-vline,
  WA_IEWMHUHDRC-STORAGEBIN, sy-vline,
  WA_IEWMHUHDRC-HANDLINGUNITTYPE, sy-vline,
  WA_IEWMHUHDRC-GROSSWEIGHT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IEWMHUHDRC 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_IEWMHUHDRC 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_IEWMHUHDRC INTO WA_IEWMHUHDRC.


*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 PACKAGINGMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IEWMHUHDRC-PACKAGINGMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEWMHUHDRC-PACKAGINGMATERIAL.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field HANDLINGUNITMAXDIMENSIONUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IEWMHUHDRC-HANDLINGUNITMAXDIMENSIONUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEWMHUHDRC-HANDLINGUNITMAXDIMENSIONUNIT.
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_IEWMHUHDRC_STR, 
MANDT TYPE STRING,
HANDLINGUNITEXTERNALID TYPE STRING,
WAREHOUSE TYPE STRING,
PACKAGINGMATERIAL TYPE STRING,
PACKAGINGMATERIALTYPE TYPE STRING,
STORAGETYPE TYPE STRING,
HANDLINGUNITSTATUS TYPE STRING,
STORAGESECTION TYPE STRING,
STORAGEBIN TYPE STRING,
HANDLINGUNITTYPE TYPE STRING,
GROSSWEIGHT TYPE STRING,
NETWEIGHT TYPE STRING,
HANDLINGUNITMAXWEIGHT TYPE STRING,
WEIGHTUNIT TYPE STRING,
HANDLINGUNITTAREWEIGHT TYPE STRING,
HANDLINGUNITTAREWEIGHTUNIT TYPE STRING,
GROSSVOLUME TYPE STRING,
HANDLINGUNITNETVOLUME TYPE STRING,
HANDLINGUNITMAXVOLUME TYPE STRING,
VOLUMEUNIT TYPE STRING,
HANDLINGUNITTAREVOLUME TYPE STRING,
HANDLINGUNITVOLUMETOLERANCE TYPE STRING,
HANDLINGUNITTAREVOLUMEUNIT TYPE STRING,
HANDLINGUNITLENGTH TYPE STRING,
HANDLINGUNITWIDTH TYPE STRING,
HANDLINGUNITHEIGHT TYPE STRING,
UNITOFMEASUREDIMENSION TYPE STRING,
HANDLINGUNITMAXLENGTH TYPE STRING,
HANDLINGUNITMAXWIDTH TYPE STRING,
HANDLINGUNITMAXHEIGHT TYPE STRING,
HANDLINGUNITMAXDIMENSIONUNIT TYPE STRING,
REFERENCEDOCUMENTNUMBER TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONUTCDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEUTCDATETIME TYPE STRING,
PARENTHANDLINGUNITNUMBER TYPE STRING,
HANDLINGUNITUUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IEWMHUHDRC_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_IEWMHUHDRC_STR-MANDT sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITEXTERNALID sy-vline 
WA_IEWMHUHDRC_STR-WAREHOUSE sy-vline 
WA_IEWMHUHDRC_STR-PACKAGINGMATERIAL sy-vline 
WA_IEWMHUHDRC_STR-PACKAGINGMATERIALTYPE sy-vline 
WA_IEWMHUHDRC_STR-STORAGETYPE sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITSTATUS sy-vline 
WA_IEWMHUHDRC_STR-STORAGESECTION sy-vline 
WA_IEWMHUHDRC_STR-STORAGEBIN sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITTYPE sy-vline 
WA_IEWMHUHDRC_STR-GROSSWEIGHT sy-vline 
WA_IEWMHUHDRC_STR-NETWEIGHT sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITMAXWEIGHT sy-vline 
WA_IEWMHUHDRC_STR-WEIGHTUNIT sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITTAREWEIGHT sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITTAREWEIGHTUNIT sy-vline 
WA_IEWMHUHDRC_STR-GROSSVOLUME sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITNETVOLUME sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITMAXVOLUME sy-vline 
WA_IEWMHUHDRC_STR-VOLUMEUNIT sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITTAREVOLUME sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITVOLUMETOLERANCE sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITTAREVOLUMEUNIT sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITLENGTH sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITWIDTH sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITHEIGHT sy-vline 
WA_IEWMHUHDRC_STR-UNITOFMEASUREDIMENSION sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITMAXLENGTH sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITMAXWIDTH sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITMAXHEIGHT sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITMAXDIMENSIONUNIT sy-vline 
WA_IEWMHUHDRC_STR-REFERENCEDOCUMENTNUMBER sy-vline 
WA_IEWMHUHDRC_STR-CREATEDBYUSER sy-vline 
WA_IEWMHUHDRC_STR-CREATIONUTCDATETIME sy-vline 
WA_IEWMHUHDRC_STR-LASTCHANGEDBYUSER sy-vline 
WA_IEWMHUHDRC_STR-LASTCHANGEUTCDATETIME sy-vline 
WA_IEWMHUHDRC_STR-PARENTHANDLINGUNITNUMBER sy-vline 
WA_IEWMHUHDRC_STR-HANDLINGUNITUUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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