ABAP Select data from SAP table EHFNDV_REQ_REGL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHFNDV_REQ_REGL
*  INTO TABLE @DATA(IT_EHFNDV_REQ_REGL2).
*--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_EHFNDV_REQ_REGL INDEX 1 INTO DATA(WA_EHFNDV_REQ_REGL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHFNDV_REQ_REGL>-SAPCLIENT = 1.
<EHFNDV_REQ_REGL>-CMPLRQVERS = 1.
<EHFNDV_REQ_REGL>-BCOKEY = 1.
<EHFNDV_REQ_REGL>-SUBSTANCELISTUUID = 1.
<EHFNDV_REQ_REGL>-CMPLRQVERSUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHFNDV_REQ_REGL-CREATIONDATETIME, sy-vline,
  WA_EHFNDV_REQ_REGL-CREATEDBYUSER, sy-vline,
  WA_EHFNDV_REQ_REGL-LASTCHANGEDATETIME, sy-vline,
  WA_EHFNDV_REQ_REGL-LASTCHANGEDBYUSER, sy-vline,
  WA_EHFNDV_REQ_REGL-SUBSTANCELIST, sy-vline,
  WA_EHFNDV_REQ_REGL-SUBSTANCELISTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHFNDV_REQ_REGL 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_EHFNDV_REQ_REGL 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_EHFNDV_REQ_REGL INTO WA_EHFNDV_REQ_REGL.


*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 TSTLC, internal->external for field CREATIONDATETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_REGL-CREATIONDATETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_REGL-CREATIONDATETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field LASTCHANGEDATETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_REGL-LASTCHANGEDATETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_REGL-LASTCHANGEDATETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit RLTYP, internal->external for field SUBSTANCELISTTYPE
CALL FUNCTION 'CONVERSION_EXIT_RLTYP_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_REGL-SUBSTANCELISTTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_REGL-SUBSTANCELISTTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EHUNI, internal->external for field COMPONENTTHRESHOLDUOM
CALL FUNCTION 'CONVERSION_EXIT_EHUNI_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_REGL-COMPONENTTHRESHOLDUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_REGL-COMPONENTTHRESHOLDUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EHUNI, internal->external for field VOLUMETHRESHOLDUOM
CALL FUNCTION 'CONVERSION_EXIT_EHUNI_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_REGL-VOLUMETHRESHOLDUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_REGL-VOLUMETHRESHOLDUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field SUBSTANCELISTINTVERSDATE
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDV_REQ_REGL-SUBSTANCELISTINTVERSDATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDV_REQ_REGL-SUBSTANCELISTINTVERSDATE.
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_EHFNDV_REQ_REGL_STR, 
SAPCLIENT TYPE STRING,
CMPLRQVERS TYPE STRING,
BCOKEY TYPE STRING,
SUBSTANCELISTUUID TYPE STRING,
CMPLRQVERSUUID TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
SUBSTANCELIST TYPE STRING,
SUBSTANCELISTTYPE TYPE STRING,
SUBSTANCELISTCOPYRIGHTTXT TYPE STRING,
COMPONENTTHRESHOLD TYPE STRING,
COMPONENTTHRESHOLDUOM TYPE STRING,
VOLUMETHRESHOLD TYPE STRING,
VOLUMETHRESHOLDUOM TYPE STRING,
THRESHOLDPERIOD TYPE STRING,
SUBSTANCELISTINTVERS TYPE STRING,
SUBSTANCELISTINTVERSDATE TYPE STRING,
STRUCTURE_KEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHFNDV_REQ_REGL_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_EHFNDV_REQ_REGL_STR-SAPCLIENT sy-vline 
WA_EHFNDV_REQ_REGL_STR-CMPLRQVERS sy-vline 
WA_EHFNDV_REQ_REGL_STR-BCOKEY sy-vline 
WA_EHFNDV_REQ_REGL_STR-SUBSTANCELISTUUID sy-vline 
WA_EHFNDV_REQ_REGL_STR-CMPLRQVERSUUID sy-vline 
WA_EHFNDV_REQ_REGL_STR-CREATIONDATETIME sy-vline 
WA_EHFNDV_REQ_REGL_STR-CREATEDBYUSER sy-vline 
WA_EHFNDV_REQ_REGL_STR-LASTCHANGEDATETIME sy-vline 
WA_EHFNDV_REQ_REGL_STR-LASTCHANGEDBYUSER sy-vline 
WA_EHFNDV_REQ_REGL_STR-SUBSTANCELIST sy-vline 
WA_EHFNDV_REQ_REGL_STR-SUBSTANCELISTTYPE sy-vline 
WA_EHFNDV_REQ_REGL_STR-SUBSTANCELISTCOPYRIGHTTXT sy-vline 
WA_EHFNDV_REQ_REGL_STR-COMPONENTTHRESHOLD sy-vline 
WA_EHFNDV_REQ_REGL_STR-COMPONENTTHRESHOLDUOM sy-vline 
WA_EHFNDV_REQ_REGL_STR-VOLUMETHRESHOLD sy-vline 
WA_EHFNDV_REQ_REGL_STR-VOLUMETHRESHOLDUOM sy-vline 
WA_EHFNDV_REQ_REGL_STR-THRESHOLDPERIOD sy-vline 
WA_EHFNDV_REQ_REGL_STR-SUBSTANCELISTINTVERS sy-vline 
WA_EHFNDV_REQ_REGL_STR-SUBSTANCELISTINTVERSDATE sy-vline 
WA_EHFNDV_REQ_REGL_STR-STRUCTURE_KEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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