ABAP Select data from SAP table DIADRCPD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DIADRCPD
*  INTO TABLE @DATA(IT_DIADRCPD2).
*--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_DIADRCPD INDEX 1 INTO DATA(WA_DIADRCPD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DIADRCPD>-MANDT = 1.
<DIADRCPD>-NAME1 = 1.
<DIADRCPD>-NAME2 = 1.
<DIADRCPD>-NAME3 = 1.
<DIADRCPD>-NAME4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DIADRCPD-CITY1, sy-vline,
  WA_DIADRCPD-CITY2, sy-vline,
  WA_DIADRCPD-POST_CODE1, sy-vline,
  WA_DIADRCPD-POST_CODE2, sy-vline,
  WA_DIADRCPD-COUNTRY, sy-vline,
  WA_DIADRCPD-REGION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DIADRCPD 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_DIADRCPD 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_DIADRCPD INTO WA_DIADRCPD.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_DIADRCPD-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIADRCPD-LANGU.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_DIADRCPD-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIADRCPD-GBDAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DIADRCPD-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIADRCPD-KUNNR.
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_DIADRCPD_STR, 
MANDT TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
CITY1 TYPE STRING,
CITY2 TYPE STRING,
POST_CODE1 TYPE STRING,
POST_CODE2 TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
STREET TYPE STRING,
PO_BOX TYPE STRING,
LANGU TYPE STRING,
TEL_NUMBER TYPE STRING,
FAX_NUMBER TYPE STRING,
TLX_NUMBER TYPE STRING,
TTX_NUMBER TYPE STRING,
SORT1 TYPE STRING,
NAME_LIST TYPE STRING,
REMARK TYPE STRING,
TZONSP TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
HOUSE_NUM1 TYPE STRING,
COUNTY_CODE TYPE STRING,
TOWNSHIP_CODE TYPE STRING,
TITLE TYPE STRING,
DEPARTMENT TYPE STRING,
FUNCTION TYPE STRING,
NICKNAME TYPE STRING,
SEX TYPE STRING,
PAFKT TYPE STRING,
PARVO TYPE STRING,
PAVIP TYPE STRING,
GBDAT TYPE STRING,
FAMST TYPE STRING,
KUNNR TYPE STRING,
TRANSPZONE TYPE STRING,
TAXJURCODE TYPE STRING,
POSTALAREA TYPE STRING,
PO_BOX_LOC TYPE STRING,
TITLE_MEDI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DIADRCPD_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_DIADRCPD_STR-MANDT sy-vline 
WA_DIADRCPD_STR-NAME1 sy-vline 
WA_DIADRCPD_STR-NAME2 sy-vline 
WA_DIADRCPD_STR-NAME3 sy-vline 
WA_DIADRCPD_STR-NAME4 sy-vline 
WA_DIADRCPD_STR-CITY1 sy-vline 
WA_DIADRCPD_STR-CITY2 sy-vline 
WA_DIADRCPD_STR-POST_CODE1 sy-vline 
WA_DIADRCPD_STR-POST_CODE2 sy-vline 
WA_DIADRCPD_STR-COUNTRY sy-vline 
WA_DIADRCPD_STR-REGION sy-vline 
WA_DIADRCPD_STR-STREET sy-vline 
WA_DIADRCPD_STR-PO_BOX sy-vline 
WA_DIADRCPD_STR-LANGU sy-vline 
WA_DIADRCPD_STR-TEL_NUMBER sy-vline 
WA_DIADRCPD_STR-FAX_NUMBER sy-vline 
WA_DIADRCPD_STR-TLX_NUMBER sy-vline 
WA_DIADRCPD_STR-TTX_NUMBER sy-vline 
WA_DIADRCPD_STR-SORT1 sy-vline 
WA_DIADRCPD_STR-NAME_LIST sy-vline 
WA_DIADRCPD_STR-REMARK sy-vline 
WA_DIADRCPD_STR-TZONSP sy-vline 
WA_DIADRCPD_STR-DATUM sy-vline 
WA_DIADRCPD_STR-UZEIT sy-vline 
WA_DIADRCPD_STR-HOUSE_NUM1 sy-vline 
WA_DIADRCPD_STR-COUNTY_CODE sy-vline 
WA_DIADRCPD_STR-TOWNSHIP_CODE sy-vline 
WA_DIADRCPD_STR-TITLE sy-vline 
WA_DIADRCPD_STR-DEPARTMENT sy-vline 
WA_DIADRCPD_STR-FUNCTION sy-vline 
WA_DIADRCPD_STR-NICKNAME sy-vline 
WA_DIADRCPD_STR-SEX sy-vline 
WA_DIADRCPD_STR-PAFKT sy-vline 
WA_DIADRCPD_STR-PARVO sy-vline 
WA_DIADRCPD_STR-PAVIP sy-vline 
WA_DIADRCPD_STR-GBDAT sy-vline 
WA_DIADRCPD_STR-FAMST sy-vline 
WA_DIADRCPD_STR-KUNNR sy-vline 
WA_DIADRCPD_STR-TRANSPZONE sy-vline 
WA_DIADRCPD_STR-TAXJURCODE sy-vline 
WA_DIADRCPD_STR-POSTALAREA sy-vline 
WA_DIADRCPD_STR-PO_BOX_LOC sy-vline 
WA_DIADRCPD_STR-TITLE_MEDI sy-vline      INTO ld_text SEPARATED BY SPACE.

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