ABAP Select data from SAP table EHFNDS_REQ_DG_PART1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EHFNDS_REQ_DG_PART1 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_REQ_DG_PART1. 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_REQ_DG_PART1 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_REQ_DG_PART1 TYPE STANDARD TABLE OF EHFNDS_REQ_DG_PART1,
      WA_EHFNDS_REQ_DG_PART1 TYPE EHFNDS_REQ_DG_PART1,
      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_REQ_DG_PART1> TYPE EHFNDS_REQ_DG_PART1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EHFNDS_REQ_DG_PART1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EHFNDS_REQ_DG_PART1
  INTO TABLE IT_EHFNDS_REQ_DG_PART1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHFNDS_REQ_DG_PART1
*  INTO TABLE @DATA(IT_EHFNDS_REQ_DG_PART12).
*--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_REQ_DG_PART1 INDEX 1 INTO DATA(WA_EHFNDS_REQ_DG_PART12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EHFNDS_REQ_DG_PART1 ASSIGNING <EHFNDS_REQ_DG_PART1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHFNDS_REQ_DG_PART1>-KEY = 1.
<EHFNDS_REQ_DG_PART1>-PARENT_KEY = 1.
<EHFNDS_REQ_DG_PART1>-ROOT_KEY = 1.
<EHFNDS_REQ_DG_PART1>-BCO_ID = 1.
<EHFNDS_REQ_DG_PART1>-BCO_KEY = 1.

ENDLOOP.

LOOP AT IT_EHFNDS_REQ_DG_PART1 INTO WA_EHFNDS_REQ_DG_PART1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHFNDS_REQ_DG_PART1-DATETIME_CR, sy-vline,
  WA_EHFNDS_REQ_DG_PART1-USER_ID_CR, sy-vline,
  WA_EHFNDS_REQ_DG_PART1-DATETIME_CH, sy-vline,
  WA_EHFNDS_REQ_DG_PART1-USER_ID_CH, sy-vline,
  WA_EHFNDS_REQ_DG_PART1-DANGEROUSGOODSIDNNUMBERTYPE, sy-vline,
  WA_EHFNDS_REQ_DG_PART1-DANGEROUSGOODSIDNNUMBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHFNDS_REQ_DG_PART1 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_REQ_DG_PART1 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_REQ_DG_PART1 INTO WA_EHFNDS_REQ_DG_PART1.


*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 DATETIME_CR
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_REQ_DG_PART1-DATETIME_CR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_REQ_DG_PART1-DATETIME_CR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field DATETIME_CH
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_REQ_DG_PART1-DATETIME_CH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_REQ_DG_PART1-DATETIME_CH.
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_REQ_DG_PART1_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
BCO_ID TYPE STRING,
BCO_KEY TYPE STRING,
DATETIME_CR TYPE STRING,
USER_ID_CR TYPE STRING,
DATETIME_CH TYPE STRING,
USER_ID_CH TYPE STRING,
DANGEROUSGOODSIDNNUMBERTYPE TYPE STRING,
DANGEROUSGOODSIDNNUMBER TYPE STRING,
DANGEROUSGOODSPACKINGGROUP TYPE STRING,
DANGEROUSGOODSLISTITEMVARIANT TYPE STRING,
TECHNICALNAMEISREQUIRED TYPE STRING,
DANGEROUSGOODSCLASS TYPE STRING,
DANGEROUSGOODSSUBSIDIARYRISK1 TYPE STRING,
DANGEROUSGOODSSUBSIDIARYRISK2 TYPE STRING,
DANGEROUSGOODSSUBSIDIARYRISK3 TYPE STRING,
DANGEROUSGOODSCLASSIFICATION TYPE STRING,
DANGEROUSGOODSEUADRCLASS TYPE STRING,
DANGEROUSGOODSHAZARDIDNNUMBER TYPE STRING,
TRANSPORTPERMISSION TYPE STRING,
DANGEROUSGOODSTRANSPORTCAT TYPE STRING,
MAXTOTALQTYPERTRANSPTUNIT TYPE STRING,
MAXTOTALQTYPERTRANSPTUNITUNIT TYPE STRING,
DANGEROUSGOODSQUANTITYFACTOR TYPE STRING,
DANGEROUSGOODSQUANTITYTYPE TYPE STRING,
TUNNELRESTRICTIONCODE TYPE STRING,
HAZARDCHMLEMERGENCYACTNCODE TYPE STRING,
MARINEPOLLUTANTCODE TYPE STRING,
IMDGEMSCHEDFIRE TYPE STRING,
IMDGEMSCHEDFIREISUNDERLINED TYPE STRING,
IMDGEMSCHEDSPILL TYPE STRING,
IMDGEMSCHEDSPILLISUNDERLINED TYPE STRING,
DANGEROUSGOODSSTOWAGECATEGORY TYPE STRING,
EMERGENCYRESPONSEGUIDEBOOKCODE TYPE STRING,
EUADNCARRIAGEPERMITTED TYPE STRING,
EUADNNUMBEROFBLUECONESLIGHTS TYPE STRING,
INITIALEMERGENCYRSPGUIDECODE TYPE STRING,
AU_ADGEMGYRSPGUIDEBOOKCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHFNDS_REQ_DG_PART1_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_REQ_DG_PART1_STR-KEY sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-PARENT_KEY sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-ROOT_KEY sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-BCO_ID sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-BCO_KEY sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DATETIME_CR sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-USER_ID_CR sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DATETIME_CH sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-USER_ID_CH sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSIDNNUMBERTYPE sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSIDNNUMBER sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSPACKINGGROUP sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSLISTITEMVARIANT sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-TECHNICALNAMEISREQUIRED sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSCLASS sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSSUBSIDIARYRISK1 sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSSUBSIDIARYRISK2 sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSSUBSIDIARYRISK3 sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSCLASSIFICATION sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSEUADRCLASS sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSHAZARDIDNNUMBER sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-TRANSPORTPERMISSION sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSTRANSPORTCAT sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-MAXTOTALQTYPERTRANSPTUNIT sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-MAXTOTALQTYPERTRANSPTUNITUNIT sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSQUANTITYFACTOR sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSQUANTITYTYPE sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-TUNNELRESTRICTIONCODE sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-HAZARDCHMLEMERGENCYACTNCODE sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-MARINEPOLLUTANTCODE sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-IMDGEMSCHEDFIRE sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-IMDGEMSCHEDFIREISUNDERLINED sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-IMDGEMSCHEDSPILL sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-IMDGEMSCHEDSPILLISUNDERLINED sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-DANGEROUSGOODSSTOWAGECATEGORY sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-EMERGENCYRESPONSEGUIDEBOOKCODE sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-EUADNCARRIAGEPERMITTED sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-EUADNNUMBEROFBLUECONESLIGHTS sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-INITIALEMERGENCYRSPGUIDECODE sy-vline 
WA_EHFNDS_REQ_DG_PART1_STR-AU_ADGEMGYRSPGUIDEBOOKCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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