ABAP Select data from SAP table SAPWL_WEBCLNT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SAPWL_WEBCLNT
*  INTO TABLE @DATA(IT_SAPWL_WEBCLNT2).
*--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_SAPWL_WEBCLNT INDEX 1 INTO DATA(WA_SAPWL_WEBCLNT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SAPWL_WEBCLNT>-PROTOCOL = 1.
<SAPWL_WEBCLNT>-TCODE = 1.
<SAPWL_WEBCLNT>-BTCJOB = 1.
<SAPWL_WEBCLNT>-ACCOUNT = 1.
<SAPWL_WEBCLNT>-MANDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SAPWL_WEBCLNT-HOST, sy-vline,
  WA_SAPWL_WEBCLNT-PORT, sy-vline,
  WA_SAPWL_WEBCLNT-DESTINATION, sy-vline,
  WA_SAPWL_WEBCLNT-PATH, sy-vline,
  WA_SAPWL_WEBCLNT-COUNTER, sy-vline,
  WA_SAPWL_WEBCLNT-CALLTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SAPWL_WEBCLNT 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_SAPWL_WEBCLNT 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_SAPWL_WEBCLNT INTO WA_SAPWL_WEBCLNT.


*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_SAPWL_WEBCLNT_STR, 
PROTOCOL TYPE STRING,
TCODE TYPE STRING,
BTCJOB TYPE STRING,
ACCOUNT TYPE STRING,
MANDT TYPE STRING,
HOST TYPE STRING,
PORT TYPE STRING,
DESTINATION TYPE STRING,
PATH TYPE STRING,
COUNTER TYPE STRING,
CALLTIME TYPE STRING,
EXECUTION_TI TYPE STRING,
DATA_SEND TYPE STRING,
DATA_SEND_TI TYPE STRING,
DATA_RECEIVE TYPE STRING,
DATA_RECEIVE_TI TYPE STRING,
AVG_CALL_TIME TYPE STRING,
AVG_EXEC_TIME TYPE STRING,
AVG_DATA_SEND TYPE STRING,
AVG_DATSND_TIME TYPE STRING,
AVG_DATA_REC TYPE STRING,
AVG_DATREC_TIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SAPWL_WEBCLNT_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_SAPWL_WEBCLNT_STR-PROTOCOL sy-vline 
WA_SAPWL_WEBCLNT_STR-TCODE sy-vline 
WA_SAPWL_WEBCLNT_STR-BTCJOB sy-vline 
WA_SAPWL_WEBCLNT_STR-ACCOUNT sy-vline 
WA_SAPWL_WEBCLNT_STR-MANDT sy-vline 
WA_SAPWL_WEBCLNT_STR-HOST sy-vline 
WA_SAPWL_WEBCLNT_STR-PORT sy-vline 
WA_SAPWL_WEBCLNT_STR-DESTINATION sy-vline 
WA_SAPWL_WEBCLNT_STR-PATH sy-vline 
WA_SAPWL_WEBCLNT_STR-COUNTER sy-vline 
WA_SAPWL_WEBCLNT_STR-CALLTIME sy-vline 
WA_SAPWL_WEBCLNT_STR-EXECUTION_TI sy-vline 
WA_SAPWL_WEBCLNT_STR-DATA_SEND sy-vline 
WA_SAPWL_WEBCLNT_STR-DATA_SEND_TI sy-vline 
WA_SAPWL_WEBCLNT_STR-DATA_RECEIVE sy-vline 
WA_SAPWL_WEBCLNT_STR-DATA_RECEIVE_TI sy-vline 
WA_SAPWL_WEBCLNT_STR-AVG_CALL_TIME sy-vline 
WA_SAPWL_WEBCLNT_STR-AVG_EXEC_TIME sy-vline 
WA_SAPWL_WEBCLNT_STR-AVG_DATA_SEND sy-vline 
WA_SAPWL_WEBCLNT_STR-AVG_DATSND_TIME sy-vline 
WA_SAPWL_WEBCLNT_STR-AVG_DATA_REC sy-vline 
WA_SAPWL_WEBCLNT_STR-AVG_DATREC_TIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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