ABAP Select data from SAP table DGV_DGTPKDB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DGV_DGTPKDB
*  INTO TABLE @DATA(IT_DGV_DGTPKDB2).
*--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_DGV_DGTPKDB INDEX 1 INTO DATA(WA_DGV_DGTPKDB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DGV_DGTPKDB>-MANDT = 1.
<DGV_DGTPKDB>-RECN = 1.
<DGV_DGTPKDB>-ACTN = 1.
<DGV_DGTPKDB>-VALFR = 1.
<DGV_DGTPKDB>-VALTO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DGV_DGTPKDB-AENNR, sy-vline,
  WA_DGV_DGTPKDB-DELFLG, sy-vline,
  WA_DGV_DGTPKDB-PARKFLG, sy-vline,
  WA_DGV_DGTPKDB-CRDAT, sy-vline,
  WA_DGV_DGTPKDB-CRNAM, sy-vline,
  WA_DGV_DGTPKDB-UPDDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DGV_DGTPKDB 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_DGV_DGTPKDB 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_DGV_DGTPKDB INTO WA_DGV_DGTPKDB.


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

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field UESPA
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_DGV_DGTPKDB-UESPA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DGV_DGTPKDB-UESPA.
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_DGV_DGTPKDB_STR, 
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
AENNR TYPE STRING,
DELFLG TYPE STRING,
PARKFLG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
SRSID TYPE STRING,
OWNID TYPE STRING,
RECNROOT TYPE STRING,
RECMAST TYPE STRING,
PACOD TYPE STRING,
PERIP TYPE STRING,
IPMQU TYPE STRING,
UIPMQ TYPE STRING,
PEROP TYPE STRING,
OPMQU TYPE STRING,
UOPMQ TYPE STRING,
TOGWE TYPE STRING,
UTOGW TYPE STRING,
PERSP TYPE STRING,
SPAQU TYPE STRING,
USPAQ TYPE STRING,
IPALL TYPE STRING,
AGAUN TYPE STRING,
REGNO TYPE STRING,
AGRNO TYPE STRING,
PAWOS TYPE STRING,
EERIP TYPE STRING,
EIPA TYPE STRING,
UEIPA TYPE STRING,
EEROP TYPE STRING,
EOPA TYPE STRING,
UEOPA TYPE STRING,
EGWE TYPE STRING,
UEGWE TYPE STRING,
EERSP TYPE STRING,
ESPA TYPE STRING,
UESPA TYPE STRING,
DAOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DGV_DGTPKDB_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_DGV_DGTPKDB_STR-MANDT sy-vline 
WA_DGV_DGTPKDB_STR-RECN sy-vline 
WA_DGV_DGTPKDB_STR-ACTN sy-vline 
WA_DGV_DGTPKDB_STR-VALFR sy-vline 
WA_DGV_DGTPKDB_STR-VALTO sy-vline 
WA_DGV_DGTPKDB_STR-AENNR sy-vline 
WA_DGV_DGTPKDB_STR-DELFLG sy-vline 
WA_DGV_DGTPKDB_STR-PARKFLG sy-vline 
WA_DGV_DGTPKDB_STR-CRDAT sy-vline 
WA_DGV_DGTPKDB_STR-CRNAM sy-vline 
WA_DGV_DGTPKDB_STR-UPDDAT sy-vline 
WA_DGV_DGTPKDB_STR-UPDNAM sy-vline 
WA_DGV_DGTPKDB_STR-SRSID sy-vline 
WA_DGV_DGTPKDB_STR-OWNID sy-vline 
WA_DGV_DGTPKDB_STR-RECNROOT sy-vline 
WA_DGV_DGTPKDB_STR-RECMAST sy-vline 
WA_DGV_DGTPKDB_STR-PACOD sy-vline 
WA_DGV_DGTPKDB_STR-PERIP sy-vline 
WA_DGV_DGTPKDB_STR-IPMQU sy-vline 
WA_DGV_DGTPKDB_STR-UIPMQ sy-vline 
WA_DGV_DGTPKDB_STR-PEROP sy-vline 
WA_DGV_DGTPKDB_STR-OPMQU sy-vline 
WA_DGV_DGTPKDB_STR-UOPMQ sy-vline 
WA_DGV_DGTPKDB_STR-TOGWE sy-vline 
WA_DGV_DGTPKDB_STR-UTOGW sy-vline 
WA_DGV_DGTPKDB_STR-PERSP sy-vline 
WA_DGV_DGTPKDB_STR-SPAQU sy-vline 
WA_DGV_DGTPKDB_STR-USPAQ sy-vline 
WA_DGV_DGTPKDB_STR-IPALL sy-vline 
WA_DGV_DGTPKDB_STR-AGAUN sy-vline 
WA_DGV_DGTPKDB_STR-REGNO sy-vline 
WA_DGV_DGTPKDB_STR-AGRNO sy-vline 
WA_DGV_DGTPKDB_STR-PAWOS sy-vline 
WA_DGV_DGTPKDB_STR-EERIP sy-vline 
WA_DGV_DGTPKDB_STR-EIPA sy-vline 
WA_DGV_DGTPKDB_STR-UEIPA sy-vline 
WA_DGV_DGTPKDB_STR-EEROP sy-vline 
WA_DGV_DGTPKDB_STR-EOPA sy-vline 
WA_DGV_DGTPKDB_STR-UEOPA sy-vline 
WA_DGV_DGTPKDB_STR-EGWE sy-vline 
WA_DGV_DGTPKDB_STR-UEGWE sy-vline 
WA_DGV_DGTPKDB_STR-EERSP sy-vline 
WA_DGV_DGTPKDB_STR-ESPA sy-vline 
WA_DGV_DGTPKDB_STR-UESPA sy-vline 
WA_DGV_DGTPKDB_STR-DAOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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