ABAP Select data from SAP table SDEST_FIELDS_TYPE_HTTP_EXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SDEST_FIELDS_TYPE_HTTP_EXT
*  INTO TABLE @DATA(IT_SDEST_FIELDS_TYPE_HTTP_EXT2).
*--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_SDEST_FIELDS_TYPE_HTTP_EXT INDEX 1 INTO DATA(WA_SDEST_FIELDS_TYPE_HTTP_EXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SDEST_FIELDS_TYPE_HTTP_EXT>-DESCRIPTION = 1.
<SDEST_FIELDS_TYPE_HTTP_EXT>-UI_LOCK = 1.
<SDEST_FIELDS_TYPE_HTTP_EXT>-SERVER_NAME = 1.
<SDEST_FIELDS_TYPE_HTTP_EXT>-SERVICE_NUMBER = 1.
<SDEST_FIELDS_TYPE_HTTP_EXT>-PATH_PREFIX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SDEST_FIELDS_TYPE_HTTP_EXT-PROXY_SERVER, sy-vline,
  WA_SDEST_FIELDS_TYPE_HTTP_EXT-PROXY_SERVICE_NUMBER, sy-vline,
  WA_SDEST_FIELDS_TYPE_HTTP_EXT-LOGON_METHOD, sy-vline,
  WA_SDEST_FIELDS_TYPE_HTTP_EXT-LOGON_USER, sy-vline,
  WA_SDEST_FIELDS_TYPE_HTTP_EXT-PROXY_USER, sy-vline,
  WA_SDEST_FIELDS_TYPE_HTTP_EXT-AUTHORIZATION_PARAMETER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SDEST_FIELDS_TYPE_HTTP_EXT 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_SDEST_FIELDS_TYPE_HTTP_EXT 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_SDEST_FIELDS_TYPE_HTTP_EXT INTO WA_SDEST_FIELDS_TYPE_HTTP_EXT.


*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_SDEST_FIELDS_TYPE_HTTP_EXT_STR, 
DESCRIPTION TYPE STRING,
UI_LOCK TYPE STRING,
SERVER_NAME TYPE STRING,
SERVICE_NUMBER TYPE STRING,
PATH_PREFIX TYPE STRING,
PROXY_SERVER TYPE STRING,
PROXY_SERVICE_NUMBER TYPE STRING,
LOGON_METHOD TYPE STRING,
LOGON_USER TYPE STRING,
PROXY_USER TYPE STRING,
AUTHORIZATION_PARAMETER TYPE STRING,
SSO_TICKET TYPE STRING,
SSL_ACTIVE TYPE STRING,
SSL_APPLICATION TYPE STRING,
HTTP_TIMEOUT TYPE STRING,
HTTP_VERSION TYPE STRING,
HTTP_COMPRESS TYPE STRING,
COMPRESS_REPLY TYPE STRING,
ACCEPT_COOKIE TYPE STRING,
ASSERTION_TICKET TYPE STRING,
ASSERTION_TICKET_SYSID TYPE STRING,
ASSERTION_TICKET_CLIENT TYPE STRING,
LOGON_USER_254 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SDEST_FIELDS_TYPE_HTTP_EXT_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_SDEST_FIELDS_TYPE_HTTP_EXT_STR-DESCRIPTION sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-UI_LOCK sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-SERVER_NAME sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-SERVICE_NUMBER sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-PATH_PREFIX sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-PROXY_SERVER sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-PROXY_SERVICE_NUMBER sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-LOGON_METHOD sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-LOGON_USER sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-PROXY_USER sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-AUTHORIZATION_PARAMETER sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-SSO_TICKET sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-SSL_ACTIVE sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-SSL_APPLICATION sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-HTTP_TIMEOUT sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-HTTP_VERSION sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-HTTP_COMPRESS sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-COMPRESS_REPLY sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-ACCEPT_COOKIE sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-ASSERTION_TICKET sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-ASSERTION_TICKET_SYSID sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-ASSERTION_TICKET_CLIENT sy-vline 
WA_SDEST_FIELDS_TYPE_HTTP_EXT_STR-LOGON_USER_254 sy-vline      INTO ld_text SEPARATED BY SPACE.

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