ABAP Select data from SAP table ETS_SYS_INFO 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 ETS_SYS_INFO 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 ETS_SYS_INFO. 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 ETS_SYS_INFO 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_ETS_SYS_INFO TYPE STANDARD TABLE OF ETS_SYS_INFO,
      WA_ETS_SYS_INFO TYPE ETS_SYS_INFO,
      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: <ETS_SYS_INFO> TYPE ETS_SYS_INFO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ETS_SYS_INFO
*  INTO TABLE @DATA(IT_ETS_SYS_INFO2).
*--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_ETS_SYS_INFO INDEX 1 INTO DATA(WA_ETS_SYS_INFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ETS_SYS_INFO>-TESTSYSTEM = 1.
<ETS_SYS_INFO>-RFC_INFO = 1.
<ETS_SYS_INFO>-ASHOST = 1.
<ETS_SYS_INFO>-CLIENT = 1.
<ETS_SYS_INFO>-LANG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ETS_SYS_INFO-TRACE, sy-vline,
  WA_ETS_SYS_INFO-USERID, sy-vline,
  WA_ETS_SYS_INFO-MSHOST, sy-vline,
  WA_ETS_SYS_INFO-MSSERV, sy-vline,
  WA_ETS_SYS_INFO-SYSID, sy-vline,
  WA_ETS_SYS_INFO-SYSNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ETS_SYS_INFO 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_ETS_SYS_INFO 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_ETS_SYS_INFO INTO WA_ETS_SYS_INFO.


*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 LANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ETS_SYS_INFO-LANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ETS_SYS_INFO-LANG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ETS_SYS_INFO-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ETS_SYS_INFO-LANGUAGE.
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_ETS_SYS_INFO_STR, 
TESTSYSTEM TYPE STRING,
RFC_INFO TYPE STRING,
ASHOST TYPE STRING,
CLIENT TYPE STRING,
LANG TYPE STRING,
TRACE TYPE STRING,
USERID TYPE STRING,
MSHOST TYPE STRING,
MSSERV TYPE STRING,
SYSID TYPE STRING,
SYSNR TYPE STRING,
RFCGROUP TYPE STRING,
RFCDEST TYPE STRING,
HTTP_INFO TYPE STRING,
RFCTYPE TYPE STRING,
SERVICENR TYPE STRING,
SERVER TYPE STRING,
TRACE TYPE STRING,
LANGUAGE TYPE STRING,
CLIENT TYPE STRING,
USERID TYPE STRING,
PASSWORD TYPE STRING,
DESCRIPTION TYPE STRING,
PROXY_HOST TYPE STRING,
PROXY_SERVICE TYPE STRING,
PROXY_USER TYPE STRING,
PROXY_PASSWORD TYPE STRING,
SSLAPPLIC TYPE STRING,
PATH_PREFIX TYPE STRING,
DESTLOCK TYPE STRING,
AUTHORITY TYPE STRING,
SLOGIN TYPE STRING,
SAMEUSER TYPE STRING,
SSL TYPE STRING,
HTTP_TIMEOUT TYPE STRING,
HTTP_VERSION TYPE STRING,
HTTP_COMPRESS TYPE STRING,
COMPRESSREPLY TYPE STRING,
COOKIE_ACCEPT TYPE STRING,
SSO_TICKET TYPE STRING,
CATEGORY TYPE STRING,
HTTPDEST TYPE STRING,
IS_DEFAULT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ETS_SYS_INFO_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_ETS_SYS_INFO_STR-TESTSYSTEM sy-vline 
WA_ETS_SYS_INFO_STR-RFC_INFO sy-vline 
WA_ETS_SYS_INFO_STR-ASHOST sy-vline 
WA_ETS_SYS_INFO_STR-CLIENT sy-vline 
WA_ETS_SYS_INFO_STR-LANG sy-vline 
WA_ETS_SYS_INFO_STR-TRACE sy-vline 
WA_ETS_SYS_INFO_STR-USERID sy-vline 
WA_ETS_SYS_INFO_STR-MSHOST sy-vline 
WA_ETS_SYS_INFO_STR-MSSERV sy-vline 
WA_ETS_SYS_INFO_STR-SYSID sy-vline 
WA_ETS_SYS_INFO_STR-SYSNR sy-vline 
WA_ETS_SYS_INFO_STR-RFCGROUP sy-vline 
WA_ETS_SYS_INFO_STR-RFCDEST sy-vline 
WA_ETS_SYS_INFO_STR-HTTP_INFO sy-vline 
WA_ETS_SYS_INFO_STR-RFCTYPE sy-vline 
WA_ETS_SYS_INFO_STR-SERVICENR sy-vline 
WA_ETS_SYS_INFO_STR-SERVER sy-vline 
WA_ETS_SYS_INFO_STR-TRACE sy-vline 
WA_ETS_SYS_INFO_STR-LANGUAGE sy-vline 
WA_ETS_SYS_INFO_STR-CLIENT sy-vline 
WA_ETS_SYS_INFO_STR-USERID sy-vline 
WA_ETS_SYS_INFO_STR-PASSWORD sy-vline 
WA_ETS_SYS_INFO_STR-DESCRIPTION sy-vline 
WA_ETS_SYS_INFO_STR-PROXY_HOST sy-vline 
WA_ETS_SYS_INFO_STR-PROXY_SERVICE sy-vline 
WA_ETS_SYS_INFO_STR-PROXY_USER sy-vline 
WA_ETS_SYS_INFO_STR-PROXY_PASSWORD sy-vline 
WA_ETS_SYS_INFO_STR-SSLAPPLIC sy-vline 
WA_ETS_SYS_INFO_STR-PATH_PREFIX sy-vline 
WA_ETS_SYS_INFO_STR-DESTLOCK sy-vline 
WA_ETS_SYS_INFO_STR-AUTHORITY sy-vline 
WA_ETS_SYS_INFO_STR-SLOGIN sy-vline 
WA_ETS_SYS_INFO_STR-SAMEUSER sy-vline 
WA_ETS_SYS_INFO_STR-SSL sy-vline 
WA_ETS_SYS_INFO_STR-HTTP_TIMEOUT sy-vline 
WA_ETS_SYS_INFO_STR-HTTP_VERSION sy-vline 
WA_ETS_SYS_INFO_STR-HTTP_COMPRESS sy-vline 
WA_ETS_SYS_INFO_STR-COMPRESSREPLY sy-vline 
WA_ETS_SYS_INFO_STR-COOKIE_ACCEPT sy-vline 
WA_ETS_SYS_INFO_STR-SSO_TICKET sy-vline 
WA_ETS_SYS_INFO_STR-CATEGORY sy-vline 
WA_ETS_SYS_INFO_STR-HTTPDEST sy-vline 
WA_ETS_SYS_INFO_STR-IS_DEFAULT sy-vline      INTO ld_text SEPARATED BY SPACE.

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