ABAP Select data from SAP table EHCNTC_DG_CRR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHCNTC_DG_CRR
*  INTO TABLE @DATA(IT_EHCNTC_DG_CRR2).
*--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_EHCNTC_DG_CRR INDEX 1 INTO DATA(WA_EHCNTC_DG_CRR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHCNTC_DG_CRR>-I_MANDT = 1.
<EHCNTC_DG_CRR>-CCI_INTERNAL_NR = 1.
<EHCNTC_DG_CRR>-CR_VERSION = 1.
<EHCNTC_DG_CRR>-DNGRSGOODSMODEOFTRANSPORT = 1.
<EHCNTC_DG_CRR>-LANGUAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHCNTC_DG_CRR-CLASSIFIEDASDANGEROUSGOOD, sy-vline,
  WA_EHCNTC_DG_CRR-CMPLRQRSLTPROCESSINGSTATUS, sy-vline,
  WA_EHCNTC_DG_CRR-DANGEROUSGOODSCLASS, sy-vline,
  WA_EHCNTC_DG_CRR-DANGEROUSGOODSENCLOSUREQTY, sy-vline,
  WA_EHCNTC_DG_CRR-DANGEROUSGOODSENCLOSUREUNIT, sy-vline,
  WA_EHCNTC_DG_CRR-DANGEROUSGOODSIDNNUMBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHCNTC_DG_CRR 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_EHCNTC_DG_CRR 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_EHCNTC_DG_CRR INTO WA_EHCNTC_DG_CRR.


*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 CCI_INTERNAL_NR
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_EHCNTC_DG_CRR-CCI_INTERNAL_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHCNTC_DG_CRR-CCI_INTERNAL_NR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DANGEROUSGOODSENCLOSUREUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EHCNTC_DG_CRR-DANGEROUSGOODSENCLOSUREUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHCNTC_DG_CRR-DANGEROUSGOODSENCLOSUREUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LISTEDSUBSTANCE1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHCNTC_DG_CRR-LISTEDSUBSTANCE1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHCNTC_DG_CRR-LISTEDSUBSTANCE1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LISTEDSUBSTANCE2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHCNTC_DG_CRR-LISTEDSUBSTANCE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHCNTC_DG_CRR-LISTEDSUBSTANCE2.
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_EHCNTC_DG_CRR_STR, 
I_MANDT TYPE STRING,
CCI_INTERNAL_NR TYPE STRING,
CR_VERSION TYPE STRING,
DNGRSGOODSMODEOFTRANSPORT TYPE STRING,
LANGUAGE TYPE STRING,
CLASSIFIEDASDANGEROUSGOOD TYPE STRING,
CMPLRQRSLTPROCESSINGSTATUS TYPE STRING,
DANGEROUSGOODSCLASS TYPE STRING,
DANGEROUSGOODSENCLOSUREQTY TYPE STRING,
DANGEROUSGOODSENCLOSUREUNIT TYPE STRING,
DANGEROUSGOODSIDNNUMBER TYPE STRING,
DANGEROUSGOODSIDNNUMBERTYPE TYPE STRING,
DANGEROUSGOODSPACKINGGROUP TYPE STRING,
DANGEROUSGOOD_DESCRIPTION TYPE STRING,
DESCRIPTIONOFDNGRSGDSPCKG TYPE STRING,
DNGRSGOODDESCFORDOCSTMPLTEXT TYPE STRING,
ENCLOSUREVARIANT TYPE STRING,
TIMESTAMP TYPE STRING,
TRANSPORTPERMISSION TYPE STRING,
TYPE TYPE STRING,
DANGEROUSGOODSLISTITEMVARIANT TYPE STRING,
LISTEDSUBSTANCE1 TYPE STRING,
LISTEDSUBSTANCE2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHCNTC_DG_CRR_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_EHCNTC_DG_CRR_STR-I_MANDT sy-vline 
WA_EHCNTC_DG_CRR_STR-CCI_INTERNAL_NR sy-vline 
WA_EHCNTC_DG_CRR_STR-CR_VERSION sy-vline 
WA_EHCNTC_DG_CRR_STR-DNGRSGOODSMODEOFTRANSPORT sy-vline 
WA_EHCNTC_DG_CRR_STR-LANGUAGE sy-vline 
WA_EHCNTC_DG_CRR_STR-CLASSIFIEDASDANGEROUSGOOD sy-vline 
WA_EHCNTC_DG_CRR_STR-CMPLRQRSLTPROCESSINGSTATUS sy-vline 
WA_EHCNTC_DG_CRR_STR-DANGEROUSGOODSCLASS sy-vline 
WA_EHCNTC_DG_CRR_STR-DANGEROUSGOODSENCLOSUREQTY sy-vline 
WA_EHCNTC_DG_CRR_STR-DANGEROUSGOODSENCLOSUREUNIT sy-vline 
WA_EHCNTC_DG_CRR_STR-DANGEROUSGOODSIDNNUMBER sy-vline 
WA_EHCNTC_DG_CRR_STR-DANGEROUSGOODSIDNNUMBERTYPE sy-vline 
WA_EHCNTC_DG_CRR_STR-DANGEROUSGOODSPACKINGGROUP sy-vline 
WA_EHCNTC_DG_CRR_STR-DANGEROUSGOOD_DESCRIPTION sy-vline 
WA_EHCNTC_DG_CRR_STR-DESCRIPTIONOFDNGRSGDSPCKG sy-vline 
WA_EHCNTC_DG_CRR_STR-DNGRSGOODDESCFORDOCSTMPLTEXT sy-vline 
WA_EHCNTC_DG_CRR_STR-ENCLOSUREVARIANT sy-vline 
WA_EHCNTC_DG_CRR_STR-TIMESTAMP sy-vline 
WA_EHCNTC_DG_CRR_STR-TRANSPORTPERMISSION sy-vline 
WA_EHCNTC_DG_CRR_STR-TYPE sy-vline 
WA_EHCNTC_DG_CRR_STR-DANGEROUSGOODSLISTITEMVARIANT sy-vline 
WA_EHCNTC_DG_CRR_STR-LISTEDSUBSTANCE1 sy-vline 
WA_EHCNTC_DG_CRR_STR-LISTEDSUBSTANCE2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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