ABAP Select data from SAP table EHFNDS_API_PH_DNSTY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHFNDS_API_PH_DNSTY
*  INTO TABLE @DATA(IT_EHFNDS_API_PH_DNSTY2).
*--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_EHFNDS_API_PH_DNSTY INDEX 1 INTO DATA(WA_EHFNDS_API_PH_DNSTY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHFNDS_API_PH_DNSTY>-SENDER_TECHNICAL_ID = 1.
<EHFNDS_API_PH_DNSTY>-INTERNAL_NUMBER = 1.
<EHFNDS_API_PH_DNSTY>-KEY = 1.
<EHFNDS_API_PH_DNSTY>-PARENT_KEY = 1.
<EHFNDS_API_PH_DNSTY>-ROOT_KEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHFNDS_API_PH_DNSTY-PHYSCHMLDENSAT20LOWRQTYOPTR, sy-vline,
  WA_EHFNDS_API_PH_DNSTY-PHYSCHMLDENSAT20LOWRQTYASTXT, sy-vline,
  WA_EHFNDS_API_PH_DNSTY-PHYSCHMLDENSAT20UPRQTYOPTR, sy-vline,
  WA_EHFNDS_API_PH_DNSTY-PHYSCHMLDENSAT20UPRQTYASTXT, sy-vline,
  WA_EHFNDS_API_PH_DNSTY-PHYSCHMLDENSAT15LOWRQTYOPTR, sy-vline,
  WA_EHFNDS_API_PH_DNSTY-PHYSCHMLDENSAT15LOWRQTYASTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHFNDS_API_PH_DNSTY 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_EHFNDS_API_PH_DNSTY 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_EHFNDS_API_PH_DNSTY INTO WA_EHFNDS_API_PH_DNSTY.


*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 SPEC1, internal->external for field INTERNAL_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_API_PH_DNSTY-INTERNAL_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_API_PH_DNSTY-INTERNAL_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PHYSCHMLDENSQTYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_API_PH_DNSTY-PHYSCHMLDENSQTYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_API_PH_DNSTY-PHYSCHMLDENSQTYUNIT.
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_EHFNDS_API_PH_DNSTY_STR, 
SENDER_TECHNICAL_ID TYPE STRING,
INTERNAL_NUMBER TYPE STRING,
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
PHYSCHMLDENSAT20LOWRQTYOPTR TYPE STRING,
PHYSCHMLDENSAT20LOWRQTYASTXT TYPE STRING,
PHYSCHMLDENSAT20UPRQTYOPTR TYPE STRING,
PHYSCHMLDENSAT20UPRQTYASTXT TYPE STRING,
PHYSCHMLDENSAT15LOWRQTYOPTR TYPE STRING,
PHYSCHMLDENSAT15LOWRQTYASTXT TYPE STRING,
PHYSCHMLDENSAT15UPRQTYOPTR TYPE STRING,
PHYSCHMLDENSAT15UPRQTYASTXT TYPE STRING,
PHYSCHMLDENSAT50LOWRQTYOPTR TYPE STRING,
PHYSCHMLDENSAT50LOWRQTYASTXT TYPE STRING,
PHYSCHMLDENSAT50UPRQTYOPTR TYPE STRING,
PHYSCHMLDENSAT50UPRQTYASTXT TYPE STRING,
PHYSCHMLDENSQTYUNIT TYPE STRING,
PCPHYSNOTETEXT TYPE STRING,
PCPHYSADDLSTATEMENTPHRSUUID TYPE STRING,
PCPHYSADDLSTATEMENTPHRS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHFNDS_API_PH_DNSTY_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_EHFNDS_API_PH_DNSTY_STR-SENDER_TECHNICAL_ID sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-INTERNAL_NUMBER sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-KEY sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PARENT_KEY sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-ROOT_KEY sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSAT20LOWRQTYOPTR sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSAT20LOWRQTYASTXT sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSAT20UPRQTYOPTR sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSAT20UPRQTYASTXT sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSAT15LOWRQTYOPTR sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSAT15LOWRQTYASTXT sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSAT15UPRQTYOPTR sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSAT15UPRQTYASTXT sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSAT50LOWRQTYOPTR sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSAT50LOWRQTYASTXT sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSAT50UPRQTYOPTR sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSAT50UPRQTYASTXT sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PHYSCHMLDENSQTYUNIT sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PCPHYSNOTETEXT sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PCPHYSADDLSTATEMENTPHRSUUID sy-vline 
WA_EHFNDS_API_PH_DNSTY_STR-PCPHYSADDLSTATEMENTPHRS sy-vline      INTO ld_text SEPARATED BY SPACE.

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