ABAP Select data from SAP table OCS_TP_CALL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OCS_TP_CALL
*  INTO TABLE @DATA(IT_OCS_TP_CALL2).
*--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_OCS_TP_CALL INDEX 1 INTO DATA(WA_OCS_TP_CALL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OCS_TP_CALL>-COMMAND = 1.
<OCS_TP_CALL>-SYSNAME = 1.
<OCS_TP_CALL>-TRKORR = 1.
<OCS_TP_CALL>-CLIENT = 1.
<OCS_TP_CALL>-UMODES = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OCS_TP_CALL-RETCODE, sy-vline,
  WA_OCS_TP_CALL-VERSION, sy-vline,
  WA_OCS_TP_CALL-MESSAGE, sy-vline,
  WA_OCS_TP_CALL-COUNTER, sy-vline,
  WA_OCS_TP_CALL-OPTIONS, sy-vline,
  WA_OCS_TP_CALL-STDOUT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OCS_TP_CALL 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_OCS_TP_CALL 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_OCS_TP_CALL INTO WA_OCS_TP_CALL.


*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_OCS_TP_CALL_STR, 
COMMAND TYPE STRING,
SYSNAME TYPE STRING,
TRKORR TYPE STRING,
CLIENT TYPE STRING,
UMODES TYPE STRING,
RETCODE TYPE STRING,
VERSION TYPE STRING,
MESSAGE TYPE STRING,
COUNTER TYPE STRING,
OPTIONS TYPE STRING,
STDOUT TYPE STRING,
LOGPTR TYPE STRING,
BUFFER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OCS_TP_CALL_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_OCS_TP_CALL_STR-COMMAND sy-vline 
WA_OCS_TP_CALL_STR-SYSNAME sy-vline 
WA_OCS_TP_CALL_STR-TRKORR sy-vline 
WA_OCS_TP_CALL_STR-CLIENT sy-vline 
WA_OCS_TP_CALL_STR-UMODES sy-vline 
WA_OCS_TP_CALL_STR-RETCODE sy-vline 
WA_OCS_TP_CALL_STR-VERSION sy-vline 
WA_OCS_TP_CALL_STR-MESSAGE sy-vline 
WA_OCS_TP_CALL_STR-COUNTER sy-vline 
WA_OCS_TP_CALL_STR-OPTIONS sy-vline 
WA_OCS_TP_CALL_STR-STDOUT sy-vline 
WA_OCS_TP_CALL_STR-LOGPTR sy-vline 
WA_OCS_TP_CALL_STR-BUFFER sy-vline      INTO ld_text SEPARATED BY SPACE.

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