ABAP Select data from SAP table IUUC_S_VIEW_CONFIG_RCV_CON into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IUUC_S_VIEW_CONFIG_RCV_CON
*  INTO TABLE @DATA(IT_IUUC_S_VIEW_CONFIG_RCV_CON2).
*--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_IUUC_S_VIEW_CONFIG_RCV_CON INDEX 1 INTO DATA(WA_IUUC_S_VIEW_CONFIG_RCV_CON2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IUUC_S_VIEW_CONFIG_RCV_CON>-SYSTEM_TYPE = 1.
<IUUC_S_VIEW_CONFIG_RCV_CON>-RFCDEST = 1.
<IUUC_S_VIEW_CONFIG_RCV_CON>-LEGACY_DB = 1.
<IUUC_S_VIEW_CONFIG_RCV_CON>-LEGACY_DBCON = 1.
<IUUC_S_VIEW_CONFIG_RCV_CON>-LEGACY_SCHEMA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IUUC_S_VIEW_CONFIG_RCV_CON-LEGACY_TBLSP, sy-vline,
  WA_IUUC_S_VIEW_CONFIG_RCV_CON-LEGACY_UNICODE, sy-vline,
  WA_IUUC_S_VIEW_CONFIG_RCV_CON-USERNAME, sy-vline,
  WA_IUUC_S_VIEW_CONFIG_RCV_CON-PASSWORD, sy-vline,
  WA_IUUC_S_VIEW_CONFIG_RCV_CON-HOSTNAME, sy-vline,
  WA_IUUC_S_VIEW_CONFIG_RCV_CON-INSTANCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IUUC_S_VIEW_CONFIG_RCV_CON 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_IUUC_S_VIEW_CONFIG_RCV_CON 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_IUUC_S_VIEW_CONFIG_RCV_CON INTO WA_IUUC_S_VIEW_CONFIG_RCV_CON.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_IUUC_S_VIEW_CONFIG_RCV_CON_STR, 
SYSTEM_TYPE TYPE STRING,
RFCDEST TYPE STRING,
LEGACY_DB TYPE STRING,
LEGACY_DBCON TYPE STRING,
LEGACY_SCHEMA TYPE STRING,
LEGACY_TBLSP TYPE STRING,
LEGACY_UNICODE TYPE STRING,
USERNAME TYPE STRING,
PASSWORD TYPE STRING,
HOSTNAME TYPE STRING,
INSTANCE TYPE STRING,
LOGICAL_PORT TYPE STRING,
TRG_SCENARIO TYPE STRING,
LOGSYS TYPE STRING,
ODQ_ALIAS TYPE STRING,
APPLNM TYPE STRING,
ENCRYPTED TYPE STRING,
PORT TYPE STRING,
SERVICE_ID TYPE STRING,
PROXY_NAME TYPE STRING,
PROXY_PORT TYPE STRING,
SSL_CERT_VALID TYPE STRING,
SSL_CERT_HOSTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IUUC_S_VIEW_CONFIG_RCV_CON_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_IUUC_S_VIEW_CONFIG_RCV_CON_STR-SYSTEM_TYPE sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-RFCDEST sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-LEGACY_DB sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-LEGACY_DBCON sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-LEGACY_SCHEMA sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-LEGACY_TBLSP sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-LEGACY_UNICODE sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-USERNAME sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-PASSWORD sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-HOSTNAME sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-INSTANCE sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-LOGICAL_PORT sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-TRG_SCENARIO sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-LOGSYS sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-ODQ_ALIAS sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-APPLNM sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-ENCRYPTED sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-PORT sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-SERVICE_ID sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-PROXY_NAME sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-PROXY_PORT sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-SSL_CERT_VALID sy-vline 
WA_IUUC_S_VIEW_CONFIG_RCV_CON_STR-SSL_CERT_HOSTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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