ABAP Select data from SAP table EHFNDS_API_PHYSCHEM_READ_SCEN 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_PHYSCHEM_READ_SCEN 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_PHYSCHEM_READ_SCEN. 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_PHYSCHEM_READ_SCEN 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_PHYSCHEM_READ_SCEN TYPE STANDARD TABLE OF EHFNDS_API_PHYSCHEM_READ_SCEN,
      WA_EHFNDS_API_PHYSCHEM_READ_SCEN TYPE EHFNDS_API_PHYSCHEM_READ_SCEN,
      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_PHYSCHEM_READ_SCEN> TYPE EHFNDS_API_PHYSCHEM_READ_SCEN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHFNDS_API_PHYSCHEM_READ_SCEN
*  INTO TABLE @DATA(IT_EHFNDS_API_PHYSCHEM_READ_SCEN2).
*--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_PHYSCHEM_READ_SCEN INDEX 1 INTO DATA(WA_EHFNDS_API_PHYSCHEM_READ_SCEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHFNDS_API_PHYSCHEM_READ_SCEN>-BOILING_POINT = 1.
<EHFNDS_API_PHYSCHEM_READ_SCEN>-BULK_DENSITY = 1.
<EHFNDS_API_PHYSCHEM_READ_SCEN>-COLOR = 1.
<EHFNDS_API_PHYSCHEM_READ_SCEN>-DENSITY = 1.
<EHFNDS_API_PHYSCHEM_READ_SCEN>-FORM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHFNDS_API_PHYSCHEM_READ_SCEN-MELTING_POINT, sy-vline,
  WA_EHFNDS_API_PHYSCHEM_READ_SCEN-MOLAR_MASS, sy-vline,
  WA_EHFNDS_API_PHYSCHEM_READ_SCEN-PARTICLE_SIZE, sy-vline,
  WA_EHFNDS_API_PHYSCHEM_READ_SCEN-PARTITION_COEFFICIENT, sy-vline,
  WA_EHFNDS_API_PHYSCHEM_READ_SCEN-PHVALUE, sy-vline,
  WA_EHFNDS_API_PHYSCHEM_READ_SCEN-SOLUBILITY_WATER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHFNDS_API_PHYSCHEM_READ_SCEN 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_PHYSCHEM_READ_SCEN 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_PHYSCHEM_READ_SCEN INTO WA_EHFNDS_API_PHYSCHEM_READ_SCEN.


*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.
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_PHYSCHEM_READ_SCEN_STR, 
BOILING_POINT TYPE STRING,
BULK_DENSITY TYPE STRING,
COLOR TYPE STRING,
DENSITY TYPE STRING,
FORM TYPE STRING,
MELTING_POINT TYPE STRING,
MOLAR_MASS TYPE STRING,
PARTICLE_SIZE TYPE STRING,
PARTITION_COEFFICIENT TYPE STRING,
PHVALUE TYPE STRING,
SOLUBILITY_WATER TYPE STRING,
STATE_OF_MATTER TYPE STRING,
VAPOR_PRESSURE TYPE STRING,
EVAPORATION_RATE TYPE STRING,
FLOW_TIME TYPE STRING,
ODOR TYPE STRING,
ODOR_THRESHOLD TYPE STRING,
PARTICLE_SIZE_DISTRIBUTION TYPE STRING,
RELATIVE_DENSITY TYPE STRING,
RELATIVE_VAPOR_DENSITY TYPE STRING,
VISCOSITY_DYNAMIC TYPE STRING,
VISCOSITY_KINEMATIC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHFNDS_API_PHYSCHEM_READ_SCEN_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_PHYSCHEM_READ_SCEN_STR-BOILING_POINT sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-BULK_DENSITY sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-COLOR sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-DENSITY sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-FORM sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-MELTING_POINT sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-MOLAR_MASS sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-PARTICLE_SIZE sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-PARTITION_COEFFICIENT sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-PHVALUE sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-SOLUBILITY_WATER sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-STATE_OF_MATTER sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-VAPOR_PRESSURE sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-EVAPORATION_RATE sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-FLOW_TIME sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-ODOR sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-ODOR_THRESHOLD sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-PARTICLE_SIZE_DISTRIBUTION sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-RELATIVE_DENSITY sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-RELATIVE_VAPOR_DENSITY sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-VISCOSITY_DYNAMIC sy-vline 
WA_EHFNDS_API_PHYSCHEM_READ_SCEN_STR-VISCOSITY_KINEMATIC sy-vline      INTO ld_text SEPARATED BY SPACE.

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