ABAP Select data from SAP table ETTP_TESTPROXY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ETTP_TESTPROXY
*  INTO TABLE @DATA(IT_ETTP_TESTPROXY2).
*--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_ETTP_TESTPROXY INDEX 1 INTO DATA(WA_ETTP_TESTPROXY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ETTP_TESTPROXY>-USERNAME = 1.
<ETTP_TESTPROXY>-PROGRAMMID = 1.
<ETTP_TESTPROXY>-HOSTADRESS = 1.
<ETTP_TESTPROXY>-HOSTPORT = 1.
<ETTP_TESTPROXY>-RFCGWHOST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ETTP_TESTPROXY-RFCGWSERV, sy-vline,
  WA_ETTP_TESTPROXY-ACTIVE, sy-vline,
  WA_ETTP_TESTPROXY-SYSTEMID, sy-vline,
  WA_ETTP_TESTPROXY-CLIENTNR, sy-vline,
  WA_ETTP_TESTPROXY-REGDATE, sy-vline,
  WA_ETTP_TESTPROXY-REGTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ETTP_TESTPROXY 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_ETTP_TESTPROXY 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_ETTP_TESTPROXY INTO WA_ETTP_TESTPROXY.


*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_ETTP_TESTPROXY_STR, 
USERNAME TYPE STRING,
PROGRAMMID TYPE STRING,
HOSTADRESS TYPE STRING,
HOSTPORT TYPE STRING,
RFCGWHOST TYPE STRING,
RFCGWSERV TYPE STRING,
ACTIVE TYPE STRING,
SYSTEMID TYPE STRING,
CLIENTNR TYPE STRING,
REGDATE TYPE STRING,
REGTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ETTP_TESTPROXY_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_ETTP_TESTPROXY_STR-USERNAME sy-vline 
WA_ETTP_TESTPROXY_STR-PROGRAMMID sy-vline 
WA_ETTP_TESTPROXY_STR-HOSTADRESS sy-vline 
WA_ETTP_TESTPROXY_STR-HOSTPORT sy-vline 
WA_ETTP_TESTPROXY_STR-RFCGWHOST sy-vline 
WA_ETTP_TESTPROXY_STR-RFCGWSERV sy-vline 
WA_ETTP_TESTPROXY_STR-ACTIVE sy-vline 
WA_ETTP_TESTPROXY_STR-SYSTEMID sy-vline 
WA_ETTP_TESTPROXY_STR-CLIENTNR sy-vline 
WA_ETTP_TESTPROXY_STR-REGDATE sy-vline 
WA_ETTP_TESTPROXY_STR-REGTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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