ABAP Select data from SAP table EHEWAW_WA_CHTRA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHEWAW_WA_CHTRA
*  INTO TABLE @DATA(IT_EHEWAW_WA_CHTRA2).
*--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_EHEWAW_WA_CHTRA INDEX 1 INTO DATA(WA_EHEWAW_WA_CHTRA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHEWAW_WA_CHTRA>-MANDT = 1.
<EHEWAW_WA_CHTRA>-WASTESTREAMCHNLTRANSPTRUUID = 1.
<EHEWAW_WA_CHTRA>-WASTESTREAMDSPLCHNLUUID = 1.
<EHEWAW_WA_CHTRA>-WASTESTREAMUUID = 1.
<EHEWAW_WA_CHTRA>-CREATIONDATETIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHEWAW_WA_CHTRA-CREATEDBYUSER, sy-vline,
  WA_EHEWAW_WA_CHTRA-LASTCHANGEDATETIME, sy-vline,
  WA_EHEWAW_WA_CHTRA-LASTCHANGEDBYUSER, sy-vline,
  WA_EHEWAW_WA_CHTRA-ENVRMTWASTEPARTNERUUID, sy-vline,
  WA_EHEWAW_WA_CHTRA-WASTETRANSPORTERPARTNMBR, sy-vline,
  WA_EHEWAW_WA_CHTRA-WASTESTREAMCHNLTRANSPTRISDFLT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHEWAW_WA_CHTRA 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_EHEWAW_WA_CHTRA 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_EHEWAW_WA_CHTRA INTO WA_EHEWAW_WA_CHTRA.


*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 WASTETRANSPORTERPARTNMBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHEWAW_WA_CHTRA-WASTETRANSPORTERPARTNMBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHEWAW_WA_CHTRA-WASTETRANSPORTERPARTNMBR.
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_EHEWAW_WA_CHTRA_STR, 
MANDT TYPE STRING,
WASTESTREAMCHNLTRANSPTRUUID TYPE STRING,
WASTESTREAMDSPLCHNLUUID TYPE STRING,
WASTESTREAMUUID TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
ENVRMTWASTEPARTNERUUID TYPE STRING,
WASTETRANSPORTERPARTNMBR TYPE STRING,
WASTESTREAMCHNLTRANSPTRISDFLT TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTFIELDCHANGES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHEWAW_WA_CHTRA_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_EHEWAW_WA_CHTRA_STR-MANDT sy-vline 
WA_EHEWAW_WA_CHTRA_STR-WASTESTREAMCHNLTRANSPTRUUID sy-vline 
WA_EHEWAW_WA_CHTRA_STR-WASTESTREAMDSPLCHNLUUID sy-vline 
WA_EHEWAW_WA_CHTRA_STR-WASTESTREAMUUID sy-vline 
WA_EHEWAW_WA_CHTRA_STR-CREATIONDATETIME sy-vline 
WA_EHEWAW_WA_CHTRA_STR-CREATEDBYUSER sy-vline 
WA_EHEWAW_WA_CHTRA_STR-LASTCHANGEDATETIME sy-vline 
WA_EHEWAW_WA_CHTRA_STR-LASTCHANGEDBYUSER sy-vline 
WA_EHEWAW_WA_CHTRA_STR-ENVRMTWASTEPARTNERUUID sy-vline 
WA_EHEWAW_WA_CHTRA_STR-WASTETRANSPORTERPARTNMBR sy-vline 
WA_EHEWAW_WA_CHTRA_STR-WASTESTREAMCHNLTRANSPTRISDFLT sy-vline 
WA_EHEWAW_WA_CHTRA_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_EHEWAW_WA_CHTRA_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_EHEWAW_WA_CHTRA_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_EHEWAW_WA_CHTRA_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_EHEWAW_WA_CHTRA_STR-HASACTIVEENTITY sy-vline 
WA_EHEWAW_WA_CHTRA_STR-DRAFTFIELDCHANGES sy-vline      INTO ld_text SEPARATED BY SPACE.

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