ABAP Select data from SAP table /SYCLO/DSD_HD_GEN_STR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SYCLO/DSD_HD_GEN_STR
*  INTO TABLE @DATA(IT_/SYCLO/DSD_HD_GEN_STR2).
*--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_/SYCLO/DSD_HD_GEN_STR INDEX 1 INTO DATA(WA_/SYCLO/DSD_HD_GEN_STR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SYCLO/DSD_HD_GEN_STR>-BIL_NUMBER = 1.
</SYCLO/DSD_HD_GEN_STR>-SOLD_TO_PARTY = 1.
</SYCLO/DSD_HD_GEN_STR>-SHIP_TO_PARTY = 1.
</SYCLO/DSD_HD_GEN_STR>-BILL_TO_PARTY = 1.
</SYCLO/DSD_HD_GEN_STR>-PAYER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SYCLO/DSD_HD_GEN_STR-SP_VAT, sy-vline,
  WA_/SYCLO/DSD_HD_GEN_STR-T001_VAT, sy-vline,
  WA_/SYCLO/DSD_HD_GEN_STR-T001Z_VAT, sy-vline,
  WA_/SYCLO/DSD_HD_GEN_STR-INCOTERMS1, sy-vline,
  WA_/SYCLO/DSD_HD_GEN_STR-INCOTERMS2, sy-vline,
  WA_/SYCLO/DSD_HD_GEN_STR-SHIP_COND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SYCLO/DSD_HD_GEN_STR 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_/SYCLO/DSD_HD_GEN_STR 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_/SYCLO/DSD_HD_GEN_STR INTO WA_/SYCLO/DSD_HD_GEN_STR.


*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 BIL_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SYCLO/DSD_HD_GEN_STR-BIL_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SYCLO/DSD_HD_GEN_STR-BIL_NUMBER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KNUMA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SYCLO/DSD_HD_GEN_STR-KNUMA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SYCLO/DSD_HD_GEN_STR-KNUMA.
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_/SYCLO/DSD_HD_GEN_STR_STR, 
BIL_NUMBER TYPE STRING,
SOLD_TO_PARTY TYPE STRING,
SHIP_TO_PARTY TYPE STRING,
BILL_TO_PARTY TYPE STRING,
PAYER TYPE STRING,
SP_VAT TYPE STRING,
T001_VAT TYPE STRING,
T001Z_VAT TYPE STRING,
INCOTERMS1 TYPE STRING,
INCOTERMS2 TYPE STRING,
SHIP_COND TYPE STRING,
TERMS_PAYM TYPE STRING,
VAL_DAY TYPE STRING,
VAL_DATE TYPE STRING,
BIL_WAERK TYPE STRING,
BIL_NETWR TYPE STRING,
BIL_DISC TYPE STRING,
BIL_TAX TYPE STRING,
BIL_VBTYPE TYPE STRING,
BIL_CAT TYPE STRING,
BIL_TYPE TYPE STRING,
BIL_DATE TYPE STRING,
BRT_WEIGHT TYPE STRING,
NET_WEIGHT TYPE STRING,
UNIT_OF_WEIGHT TYPE STRING,
VOLUME TYPE STRING,
VOLUMEUNIT TYPE STRING,
BIL_EDATE TYPE STRING,
BIL_ENAME TYPE STRING,
BIL_SCHEMA TYPE STRING,
KOND_NUMB TYPE STRING,
BIL_APPL TYPE STRING,
IL_TYPE TYPE STRING,
IL_DATE TYPE STRING,
MAT_LAND TYPE STRING,
DLV_LAND TYPE STRING,
SHP_LAND TYPE STRING,
LANDTX TYPE STRING,
SFAKN TYPE STRING,
XBLNR TYPE STRING,
EXNUM TYPE STRING,
KIDNO TYPE STRING,
BUPLA TYPE STRING,
RPLNR TYPE STRING,
DPVAL TYPE STRING,
CCVAL TYPE STRING,
XEGLD_L1 TYPE STRING,
XEGLD_CO TYPE STRING,
DPNET TYPE STRING,
DPEND TYPE STRING,
DPMWS_END TYPE STRING,
DPMWS TYPE STRING,
XFILKD TYPE STRING,
STCD1_T001N TYPE STRING,
XEGDR TYPE STRING,
KNUMA TYPE STRING,
MNDID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SYCLO/DSD_HD_GEN_STR_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_/SYCLO/DSD_HD_GEN_STR_STR-BIL_NUMBER sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-SOLD_TO_PARTY sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-SHIP_TO_PARTY sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BILL_TO_PARTY sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-PAYER sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-SP_VAT sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-T001_VAT sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-T001Z_VAT sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-INCOTERMS1 sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-INCOTERMS2 sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-SHIP_COND sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-TERMS_PAYM sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-VAL_DAY sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-VAL_DATE sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BIL_WAERK sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BIL_NETWR sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BIL_DISC sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BIL_TAX sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BIL_VBTYPE sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BIL_CAT sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BIL_TYPE sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BIL_DATE sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BRT_WEIGHT sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-NET_WEIGHT sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-UNIT_OF_WEIGHT sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-VOLUME sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-VOLUMEUNIT sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BIL_EDATE sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BIL_ENAME sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BIL_SCHEMA sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-KOND_NUMB sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BIL_APPL sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-IL_TYPE sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-IL_DATE sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-MAT_LAND sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-DLV_LAND sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-SHP_LAND sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-LANDTX sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-SFAKN sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-XBLNR sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-EXNUM sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-KIDNO sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-BUPLA sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-RPLNR sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-DPVAL sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-CCVAL sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-XEGLD_L1 sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-XEGLD_CO sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-DPNET sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-DPEND sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-DPMWS_END sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-DPMWS sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-XFILKD sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-STCD1_T001N sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-XEGDR sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-KNUMA sy-vline 
WA_/SYCLO/DSD_HD_GEN_STR_STR-MNDID sy-vline      INTO ld_text SEPARATED BY SPACE.

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