ABAP Select data from SAP table IDHU_DSP_L into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDHU_DSP_L
*  INTO TABLE @DATA(IT_IDHU_DSP_L2).
*--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_IDHU_DSP_L INDEX 1 INTO DATA(WA_IDHU_DSP_L2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDHU_DSP_L>-STATUS = 1.
<IDHU_DSP_L>-VATID_DOM = 1.
<IDHU_DSP_L>-VATID_GRP = 1.
<IDHU_DSP_L>-VATID_EU = 1.
<IDHU_DSP_L>-VATID_DECL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDHU_DSP_L-VATID_TYPE, sy-vline,
  WA_IDHU_DSP_L-HWBAS, sy-vline,
  WA_IDHU_DSP_L-LWBAS, sy-vline,
  WA_IDHU_DSP_L-DECBAS, sy-vline,
  WA_IDHU_DSP_L-HWSTE, sy-vline,
  WA_IDHU_DSP_L-LWSTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDHU_DSP_L 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_IDHU_DSP_L 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_IDHU_DSP_L INTO WA_IDHU_DSP_L.


*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 AC152, internal->external for field HWBAS
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDHU_DSP_L-HWBAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDHU_DSP_L-HWBAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field LWBAS
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDHU_DSP_L-LWBAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDHU_DSP_L-LWBAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DECBAS
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IDHU_DSP_L-DECBAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDHU_DSP_L-DECBAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWSTE
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IDHU_DSP_L-HWSTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDHU_DSP_L-HWSTE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field LWSTE
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IDHU_DSP_L-LWSTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDHU_DSP_L-LWSTE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWSTE_DEDUCT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IDHU_DSP_L-HWSTE_DEDUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDHU_DSP_L-HWSTE_DEDUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field LWSTE_DEDUCT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IDHU_DSP_L-LWSTE_DEDUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDHU_DSP_L-LWSTE_DEDUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DECSTE
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IDHU_DSP_L-DECSTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDHU_DSP_L-DECSTE.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IDHU_DSP_L-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDHU_DSP_L-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field AWSYS_PRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDHU_DSP_L-AWSYS_PRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDHU_DSP_L-AWSYS_PRE.
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_IDHU_DSP_L_STR, 
STATUS TYPE STRING,
VATID_DOM TYPE STRING,
VATID_GRP TYPE STRING,
VATID_EU TYPE STRING,
VATID_DECL TYPE STRING,
VATID_TYPE TYPE STRING,
HWBAS TYPE STRING,
LWBAS TYPE STRING,
DECBAS TYPE STRING,
HWSTE TYPE STRING,
LWSTE TYPE STRING,
HWSTE_DEDUCT TYPE STRING,
LWSTE_DEDUCT TYPE STRING,
DECSTE TYPE STRING,
HWAER TYPE STRING,
LWAER TYPE STRING,
WAERS TYPE STRING,
ISSUED_INVOICE_ID TYPE STRING,
ISSUED_INVOICE_DATE TYPE STRING,
PREV_INVOICE_ID TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,
AWSYS TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
XBLNR TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
XCPDD TYPE STRING,
TBTKZ TYPE STRING,
DEFERRED_TAX TYPE STRING,
NAME TYPE STRING,
FORM_KEY TYPE STRING,
INVOICE_TYPE TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
VATDATE TYPE STRING,
DECVATPERFDATE TYPE STRING,
AWTYP_PRE TYPE STRING,
AWKEY_PRE TYPE STRING,
AWSYS_PRE TYPE STRING,
ACTUAL_PERIOD TYPE STRING,
INV_CHAIN_ID TYPE STRING,
INV_CHAIN_POS TYPE STRING,
INT_INV_CHAIN TYPE STRING,
MESSAGE TYPE STRING,
VATID_GRP_DECL TYPE STRING,
ERROR TYPE STRING,
VATID_GRP_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDHU_DSP_L_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_IDHU_DSP_L_STR-STATUS sy-vline 
WA_IDHU_DSP_L_STR-VATID_DOM sy-vline 
WA_IDHU_DSP_L_STR-VATID_GRP sy-vline 
WA_IDHU_DSP_L_STR-VATID_EU sy-vline 
WA_IDHU_DSP_L_STR-VATID_DECL sy-vline 
WA_IDHU_DSP_L_STR-VATID_TYPE sy-vline 
WA_IDHU_DSP_L_STR-HWBAS sy-vline 
WA_IDHU_DSP_L_STR-LWBAS sy-vline 
WA_IDHU_DSP_L_STR-DECBAS sy-vline 
WA_IDHU_DSP_L_STR-HWSTE sy-vline 
WA_IDHU_DSP_L_STR-LWSTE sy-vline 
WA_IDHU_DSP_L_STR-HWSTE_DEDUCT sy-vline 
WA_IDHU_DSP_L_STR-LWSTE_DEDUCT sy-vline 
WA_IDHU_DSP_L_STR-DECSTE sy-vline 
WA_IDHU_DSP_L_STR-HWAER sy-vline 
WA_IDHU_DSP_L_STR-LWAER sy-vline 
WA_IDHU_DSP_L_STR-WAERS sy-vline 
WA_IDHU_DSP_L_STR-ISSUED_INVOICE_ID sy-vline 
WA_IDHU_DSP_L_STR-ISSUED_INVOICE_DATE sy-vline 
WA_IDHU_DSP_L_STR-PREV_INVOICE_ID sy-vline 
WA_IDHU_DSP_L_STR-AWTYP sy-vline 
WA_IDHU_DSP_L_STR-AWKEY sy-vline 
WA_IDHU_DSP_L_STR-AWSYS sy-vline 
WA_IDHU_DSP_L_STR-BUKRS sy-vline 
WA_IDHU_DSP_L_STR-BELNR sy-vline 
WA_IDHU_DSP_L_STR-GJAHR sy-vline 
WA_IDHU_DSP_L_STR-XBLNR sy-vline 
WA_IDHU_DSP_L_STR-LIFNR sy-vline 
WA_IDHU_DSP_L_STR-KUNNR sy-vline 
WA_IDHU_DSP_L_STR-XCPDD sy-vline 
WA_IDHU_DSP_L_STR-TBTKZ sy-vline 
WA_IDHU_DSP_L_STR-DEFERRED_TAX sy-vline 
WA_IDHU_DSP_L_STR-NAME sy-vline 
WA_IDHU_DSP_L_STR-FORM_KEY sy-vline 
WA_IDHU_DSP_L_STR-INVOICE_TYPE sy-vline 
WA_IDHU_DSP_L_STR-BUDAT sy-vline 
WA_IDHU_DSP_L_STR-BLDAT sy-vline 
WA_IDHU_DSP_L_STR-VATDATE sy-vline 
WA_IDHU_DSP_L_STR-DECVATPERFDATE sy-vline 
WA_IDHU_DSP_L_STR-AWTYP_PRE sy-vline 
WA_IDHU_DSP_L_STR-AWKEY_PRE sy-vline 
WA_IDHU_DSP_L_STR-AWSYS_PRE sy-vline 
WA_IDHU_DSP_L_STR-ACTUAL_PERIOD sy-vline 
WA_IDHU_DSP_L_STR-INV_CHAIN_ID sy-vline 
WA_IDHU_DSP_L_STR-INV_CHAIN_POS sy-vline 
WA_IDHU_DSP_L_STR-INT_INV_CHAIN sy-vline 
WA_IDHU_DSP_L_STR-MESSAGE sy-vline 
WA_IDHU_DSP_L_STR-VATID_GRP_DECL sy-vline 
WA_IDHU_DSP_L_STR-ERROR sy-vline 
WA_IDHU_DSP_L_STR-VATID_GRP_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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