ABAP Select data from SAP table ESH_S_TREX_REQUEST 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 ESH_S_TREX_REQUEST 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 ESH_S_TREX_REQUEST. 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 ESH_S_TREX_REQUEST 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_ESH_S_TREX_REQUEST TYPE STANDARD TABLE OF ESH_S_TREX_REQUEST,
      WA_ESH_S_TREX_REQUEST TYPE ESH_S_TREX_REQUEST,
      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: <ESH_S_TREX_REQUEST> TYPE ESH_S_TREX_REQUEST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_S_TREX_REQUEST
*  INTO TABLE @DATA(IT_ESH_S_TREX_REQUEST2).
*--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_ESH_S_TREX_REQUEST INDEX 1 INTO DATA(WA_ESH_S_TREX_REQUEST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_S_TREX_REQUEST>-CONNECTOR_ID = 1.
<ESH_S_TREX_REQUEST>-REQUEST = 1.
<ESH_S_TREX_REQUEST>-HANDLE_NAME = 1.
<ESH_S_TREX_REQUEST>-INDEX_ID = 1.
<ESH_S_TREX_REQUEST>-LANGUAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_S_TREX_REQUEST-RESULT_FROM, sy-vline,
  WA_ESH_S_TREX_REQUEST-RESULT_TO, sy-vline,
  WA_ESH_S_TREX_REQUEST-QUERY_ENTRIES, sy-vline,
  WA_ESH_S_TREX_REQUEST-SORT_ATTRIBUTES, sy-vline,
  WA_ESH_S_TREX_REQUEST-REQ_ATTRIBUTES, sy-vline,
  WA_ESH_S_TREX_REQUEST-REQUESTED_RESULTS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_S_TREX_REQUEST 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_ESH_S_TREX_REQUEST 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_ESH_S_TREX_REQUEST INTO WA_ESH_S_TREX_REQUEST.


*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_ESH_S_TREX_REQUEST_STR, 
CONNECTOR_ID TYPE STRING,
REQUEST TYPE STRING,
HANDLE_NAME TYPE STRING,
INDEX_ID TYPE STRING,
LANGUAGE TYPE STRING,
RESULT_FROM TYPE STRING,
RESULT_TO TYPE STRING,
QUERY_ENTRIES TYPE STRING,
SORT_ATTRIBUTES TYPE STRING,
REQ_ATTRIBUTES TYPE STRING,
REQUESTED_RESULTS TYPE STRING,
HINTS TYPE STRING,
PLACEHOLDERS TYPE STRING,
REQUEST_FLAGS TYPE STRING,
MAX_DURATION TYPE STRING,
COUNT_ONLY TYPE STRING,
REQUESTED_LANGUAGES TYPE STRING,
TREX_COMPONENT_DESCRIPTION TYPE STRING,
SWITCH_ON_TRACE TYPE STRING,
TRACE_COMPONENTS TYPE STRING,
GNAV_ATTRIBUTES TYPE STRING,
NUM_BEST_GNAV_ATTRIBUTES TYPE STRING,
ATTR_DIST_GLOBAL TYPE STRING,
OPT_NUM_VALUES TYPE STRING,
MAX_NUM_VALUES TYPE STRING,
INDEXES TYPE STRING,
FS_SEARCH_ATTRIBUTES TYPE STRING,
FS_SEARCH_ATTRIBUTES2 TYPE STRING,
ATTRIBUTE_LIST TYPE STRING,
RANKING TYPE STRING,
NO_SEARCH_NECESSARY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_S_TREX_REQUEST_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_ESH_S_TREX_REQUEST_STR-CONNECTOR_ID sy-vline 
WA_ESH_S_TREX_REQUEST_STR-REQUEST sy-vline 
WA_ESH_S_TREX_REQUEST_STR-HANDLE_NAME sy-vline 
WA_ESH_S_TREX_REQUEST_STR-INDEX_ID sy-vline 
WA_ESH_S_TREX_REQUEST_STR-LANGUAGE sy-vline 
WA_ESH_S_TREX_REQUEST_STR-RESULT_FROM sy-vline 
WA_ESH_S_TREX_REQUEST_STR-RESULT_TO sy-vline 
WA_ESH_S_TREX_REQUEST_STR-QUERY_ENTRIES sy-vline 
WA_ESH_S_TREX_REQUEST_STR-SORT_ATTRIBUTES sy-vline 
WA_ESH_S_TREX_REQUEST_STR-REQ_ATTRIBUTES sy-vline 
WA_ESH_S_TREX_REQUEST_STR-REQUESTED_RESULTS sy-vline 
WA_ESH_S_TREX_REQUEST_STR-HINTS sy-vline 
WA_ESH_S_TREX_REQUEST_STR-PLACEHOLDERS sy-vline 
WA_ESH_S_TREX_REQUEST_STR-REQUEST_FLAGS sy-vline 
WA_ESH_S_TREX_REQUEST_STR-MAX_DURATION sy-vline 
WA_ESH_S_TREX_REQUEST_STR-COUNT_ONLY sy-vline 
WA_ESH_S_TREX_REQUEST_STR-REQUESTED_LANGUAGES sy-vline 
WA_ESH_S_TREX_REQUEST_STR-TREX_COMPONENT_DESCRIPTION sy-vline 
WA_ESH_S_TREX_REQUEST_STR-SWITCH_ON_TRACE sy-vline 
WA_ESH_S_TREX_REQUEST_STR-TRACE_COMPONENTS sy-vline 
WA_ESH_S_TREX_REQUEST_STR-GNAV_ATTRIBUTES sy-vline 
WA_ESH_S_TREX_REQUEST_STR-NUM_BEST_GNAV_ATTRIBUTES sy-vline 
WA_ESH_S_TREX_REQUEST_STR-ATTR_DIST_GLOBAL sy-vline 
WA_ESH_S_TREX_REQUEST_STR-OPT_NUM_VALUES sy-vline 
WA_ESH_S_TREX_REQUEST_STR-MAX_NUM_VALUES sy-vline 
WA_ESH_S_TREX_REQUEST_STR-INDEXES sy-vline 
WA_ESH_S_TREX_REQUEST_STR-FS_SEARCH_ATTRIBUTES sy-vline 
WA_ESH_S_TREX_REQUEST_STR-FS_SEARCH_ATTRIBUTES2 sy-vline 
WA_ESH_S_TREX_REQUEST_STR-ATTRIBUTE_LIST sy-vline 
WA_ESH_S_TREX_REQUEST_STR-RANKING sy-vline 
WA_ESH_S_TREX_REQUEST_STR-NO_SEARCH_NECESSARY sy-vline      INTO ld_text SEPARATED BY SPACE.

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