ABAP Select data from SAP table /SEHS/DGS_PACKAPI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SEHS/DGS_PACKAPI 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 /SEHS/DGS_PACKAPI. 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 /SEHS/DGS_PACKAPI 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_/SEHS/DGS_PACKAPI TYPE STANDARD TABLE OF /SEHS/DGS_PACKAPI,
      WA_/SEHS/DGS_PACKAPI TYPE /SEHS/DGS_PACKAPI,
      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: </SEHS/DGS_PACKAPI> TYPE /SEHS/DGS_PACKAPI.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SEHS/DGS_PACKAPI
  INTO TABLE IT_/SEHS/DGS_PACKAPI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SEHS/DGS_PACKAPI
*  INTO TABLE @DATA(IT_/SEHS/DGS_PACKAPI2).
*--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_/SEHS/DGS_PACKAPI INDEX 1 INTO DATA(WA_/SEHS/DGS_PACKAPI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SEHS/DGS_PACKAPI ASSIGNING </SEHS/DGS_PACKAPI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SEHS/DGS_PACKAPI>-ERRORMODE = 1.
</SEHS/DGS_PACKAPI>-ERRORINFO = 1.
</SEHS/DGS_PACKAPI>-ERRORCLASS = 1.
</SEHS/DGS_PACKAPI>-ERRORPARAM = 1.
</SEHS/DGS_PACKAPI>-LOGLOCKMOD = 1.

ENDLOOP.

LOOP AT IT_/SEHS/DGS_PACKAPI INTO WA_/SEHS/DGS_PACKAPI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SEHS/DGS_PACKAPI-EXTINFO, sy-vline,
  WA_/SEHS/DGS_PACKAPI-LINEMOD, sy-vline,
  WA_/SEHS/DGS_PACKAPI-MANDT, sy-vline,
  WA_/SEHS/DGS_PACKAPI-RECN, sy-vline,
  WA_/SEHS/DGS_PACKAPI-ACTN, sy-vline,
  WA_/SEHS/DGS_PACKAPI-VALFR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SEHS/DGS_PACKAPI 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_/SEHS/DGS_PACKAPI 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_/SEHS/DGS_PACKAPI INTO WA_/SEHS/DGS_PACKAPI.


*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_/SEHS/DGS_PACKAPI-RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SEHS/DGS_PACKAPI-RECN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field U_MAX_GRS_WEIGHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SEHS/DGS_PACKAPI-U_MAX_GRS_WEIGHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SEHS/DGS_PACKAPI-U_MAX_GRS_WEIGHT.
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_/SEHS/DGS_PACKAPI_STR, 
ERRORMODE TYPE STRING,
ERRORINFO TYPE STRING,
ERRORCLASS TYPE STRING,
ERRORPARAM TYPE STRING,
LOGLOCKMOD TYPE STRING,
EXTINFO TYPE STRING,
LINEMOD TYPE STRING,
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,
INSTR_ENCL TYPE STRING,
PACOD_IN TYPE STRING,
PACOD_OUT TYPE STRING,
PACOD_SGL TYPE STRING,
MAX_QUANT_IN TYPE STRING,
U_MAX_QUANT_IN TYPE STRING,
FLG_MAX_QU_IN TYPE STRING,
MAX_QUANT_OUT TYPE STRING,
U_MAX_QUANT_OUT TYPE STRING,
FLG_MAX_QU_OUT TYPE STRING,
MAX_QUANT_SGL TYPE STRING,
U_MAX_QUANT_SGL TYPE STRING,
FLG_MAX_QU_SGL TYPE STRING,
MAX_GROSS_WEIGHT TYPE STRING,
U_MAX_GRS_WEIGHT TYPE STRING,
FLG_MAX_GRS_WGHT TYPE STRING,
IPALL TYPE STRING,
AGAUN TYPE STRING,
REGNO TYPE STRING,
AGRNO TYPE STRING,
DAOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SEHS/DGS_PACKAPI_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_/SEHS/DGS_PACKAPI_STR-ERRORMODE sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-ERRORINFO sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-ERRORCLASS sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-ERRORPARAM sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-LOGLOCKMOD sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-EXTINFO sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-LINEMOD sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-MANDT sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-RECN sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-ACTN sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-VALFR sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-VALTO sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-AENNR sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-DELFLG sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-PARKFLG sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-CRDAT sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-CRNAM sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-UPDDAT sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-UPDNAM sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-SRSID sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-OWNID sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-RECNROOT sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-INSTR_ENCL sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-PACOD_IN sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-PACOD_OUT sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-PACOD_SGL sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-MAX_QUANT_IN sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-U_MAX_QUANT_IN sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-FLG_MAX_QU_IN sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-MAX_QUANT_OUT sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-U_MAX_QUANT_OUT sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-FLG_MAX_QU_OUT sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-MAX_QUANT_SGL sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-U_MAX_QUANT_SGL sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-FLG_MAX_QU_SGL sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-MAX_GROSS_WEIGHT sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-U_MAX_GRS_WEIGHT sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-FLG_MAX_GRS_WGHT sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-IPALL sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-AGAUN sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-REGNO sy-vline 
WA_/SEHS/DGS_PACKAPI_STR-AGRNO sy-vline 
WA_/SEHS/DGS_PACKAPI_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.