ABAP Select data from SAP table VEKP_EHS_DG_APPEND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VEKP_EHS_DG_APPEND
*  INTO TABLE @DATA(IT_VEKP_EHS_DG_APPEND2).
*--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_VEKP_EHS_DG_APPEND INDEX 1 INTO DATA(WA_VEKP_EHS_DG_APPEND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VEKP_EHS_DG_APPEND>-PACKAGE_CAT = 1.
<VEKP_EHS_DG_APPEND>-TRANSP_INDEX = 1.
<VEKP_EHS_DG_APPEND>-CRIT_SAF_INDEX = 1.
<VEKP_EHS_DG_APPEND>-FLG_DG_PACKAGE = 1.
<VEKP_EHS_DG_APPEND>-DG_PACKAGE_LEVEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VEKP_EHS_DG_APPEND-PACKCODE, sy-vline,
  WA_VEKP_EHS_DG_APPEND-INSTR_ENCL_CAT, sy-vline,
  WA_VEKP_EHS_DG_APPEND-MAT_DAMAGED_CL7, sy-vline,
  WA_VEKP_EHS_DG_APPEND-DOSE_RATE_BULK, sy-vline,
  WA_VEKP_EHS_DG_APPEND-DOSE_RATE_BULK_U, sy-vline,
  WA_VEKP_EHS_DG_APPEND-DOSE_RATE_PACK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VEKP_EHS_DG_APPEND 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_VEKP_EHS_DG_APPEND 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_VEKP_EHS_DG_APPEND INTO WA_VEKP_EHS_DG_APPEND.


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

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

*Conversion exit CUNIT, internal->external for field U_MAX_GROSS_WGHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VEKP_EHS_DG_APPEND-U_MAX_GROSS_WGHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VEKP_EHS_DG_APPEND-U_MAX_GROSS_WGHT.
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_VEKP_EHS_DG_APPEND_STR, 
PACKAGE_CAT TYPE STRING,
TRANSP_INDEX TYPE STRING,
CRIT_SAF_INDEX TYPE STRING,
FLG_DG_PACKAGE TYPE STRING,
DG_PACKAGE_LEVEL TYPE STRING,
PACKCODE TYPE STRING,
INSTR_ENCL_CAT TYPE STRING,
MAT_DAMAGED_CL7 TYPE STRING,
DOSE_RATE_BULK TYPE STRING,
DOSE_RATE_BULK_U TYPE STRING,
DOSE_RATE_PACK TYPE STRING,
U_DOSE_RATE_PACK TYPE STRING,
LEADING_LWDG TYPE STRING,
MAX_GROSS_WEIGHT TYPE STRING,
U_MAX_GROSS_WGHT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VEKP_EHS_DG_APPEND_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_VEKP_EHS_DG_APPEND_STR-PACKAGE_CAT sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-TRANSP_INDEX sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-CRIT_SAF_INDEX sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-FLG_DG_PACKAGE sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-DG_PACKAGE_LEVEL sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-PACKCODE sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-INSTR_ENCL_CAT sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-MAT_DAMAGED_CL7 sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-DOSE_RATE_BULK sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-DOSE_RATE_BULK_U sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-DOSE_RATE_PACK sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-U_DOSE_RATE_PACK sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-LEADING_LWDG sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-MAX_GROSS_WEIGHT sy-vline 
WA_VEKP_EHS_DG_APPEND_STR-U_MAX_GROSS_WGHT sy-vline      INTO ld_text SEPARATED BY SPACE.

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