ABAP Select data from SAP table EHFNDW_ECTXSTW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHFNDW_ECTXSTW
*  INTO TABLE @DATA(IT_EHFNDW_ECTXSTW2).
*--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_EHFNDW_ECTXSTW INDEX 1 INTO DATA(WA_EHFNDW_ECTXSTW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHFNDW_ECTXSTW>-MANDT = 1.
<EHFNDW_ECTXSTW>-PCECTXSTBLTYWATERPRPTYUUID = 1.
<EHFNDW_ECTXSTW>-PCECTXPRPTYUUID = 1.
<EHFNDW_ECTXSTW>-PCECTXPHSCALELOWRVAL = 1.
<EHFNDW_ECTXSTW>-PCECTXPHSCALELOWRVALTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHFNDW_ECTXSTW-PCECTXPHSCALELOWRVALOPTR, sy-vline,
  WA_EHFNDW_ECTXSTW-PCECTXPHSCALEUPRVAL, sy-vline,
  WA_EHFNDW_ECTXSTW-PCECTXPHSCALEUPRVALTXT, sy-vline,
  WA_EHFNDW_ECTXSTW-PCECTXPHSCALEUPRVALOPTR, sy-vline,
  WA_EHFNDW_ECTXSTW-PCECTXHALFLIFELOWRDURN, sy-vline,
  WA_EHFNDW_ECTXSTW-PCECTXHALFLIFELOWRDURNTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHFNDW_ECTXSTW 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_EHFNDW_ECTXSTW 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_EHFNDW_ECTXSTW INTO WA_EHFNDW_ECTXSTW.


*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 CUNIT, internal->external for field PCECTXHALFLIFEUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDW_ECTXSTW-PCECTXHALFLIFEUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDW_ECTXSTW-PCECTXHALFLIFEUOM.
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_EHFNDW_ECTXSTW_STR, 
MANDT TYPE STRING,
PCECTXSTBLTYWATERPRPTYUUID TYPE STRING,
PCECTXPRPTYUUID TYPE STRING,
PCECTXPHSCALELOWRVAL TYPE STRING,
PCECTXPHSCALELOWRVALTXT TYPE STRING,
PCECTXPHSCALELOWRVALOPTR TYPE STRING,
PCECTXPHSCALEUPRVAL TYPE STRING,
PCECTXPHSCALEUPRVALTXT TYPE STRING,
PCECTXPHSCALEUPRVALOPTR TYPE STRING,
PCECTXHALFLIFELOWRDURN TYPE STRING,
PCECTXHALFLIFELOWRDURNTXT TYPE STRING,
PCECTXHALFLIFELOWRDURNOPTR TYPE STRING,
PCECTXHALFLIFEUPRDURN TYPE STRING,
PCECTXHALFLIFEUPRDURNTXT TYPE STRING,
PCECTXHALFLIFEUPRDURNOPTR TYPE STRING,
PCECTXHALFLIFEUOM TYPE STRING,
CREATIONUTCDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEUTCDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
ACTIVEUUID TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHFNDW_ECTXSTW_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_EHFNDW_ECTXSTW_STR-MANDT sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXSTBLTYWATERPRPTYUUID sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXPRPTYUUID sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXPHSCALELOWRVAL sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXPHSCALELOWRVALTXT sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXPHSCALELOWRVALOPTR sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXPHSCALEUPRVAL sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXPHSCALEUPRVALTXT sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXPHSCALEUPRVALOPTR sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXHALFLIFELOWRDURN sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXHALFLIFELOWRDURNTXT sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXHALFLIFELOWRDURNOPTR sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXHALFLIFEUPRDURN sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXHALFLIFEUPRDURNTXT sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXHALFLIFEUPRDURNOPTR sy-vline 
WA_EHFNDW_ECTXSTW_STR-PCECTXHALFLIFEUOM sy-vline 
WA_EHFNDW_ECTXSTW_STR-CREATIONUTCDATETIME sy-vline 
WA_EHFNDW_ECTXSTW_STR-CREATEDBYUSER sy-vline 
WA_EHFNDW_ECTXSTW_STR-LASTCHANGEUTCDATETIME sy-vline 
WA_EHFNDW_ECTXSTW_STR-LASTCHANGEDBYUSER sy-vline 
WA_EHFNDW_ECTXSTW_STR-ACTIVEUUID sy-vline 
WA_EHFNDW_ECTXSTW_STR-HASACTIVEENTITY sy-vline 
WA_EHFNDW_ECTXSTW_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_EHFNDW_ECTXSTW_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_EHFNDW_ECTXSTW_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_EHFNDW_ECTXSTW_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_EHFNDW_ECTXSTW_STR-DRAFTENTITYOPERATIONCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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