ABAP Select data from SAP table CLASCO_GT_ERP_TRAVEL_ITINERAR3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CLASCO_GT_ERP_TRAVEL_ITINERAR3 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 CLASCO_GT_ERP_TRAVEL_ITINERAR3. 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 CLASCO_GT_ERP_TRAVEL_ITINERAR3 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_CLASCO_GT_ERP_TRAVEL_ITINERAR3 TYPE STANDARD TABLE OF CLASCO_GT_ERP_TRAVEL_ITINERAR3,
      WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3 TYPE CLASCO_GT_ERP_TRAVEL_ITINERAR3,
      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: <CLASCO_GT_ERP_TRAVEL_ITINERAR3> TYPE CLASCO_GT_ERP_TRAVEL_ITINERAR3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CLASCO_GT_ERP_TRAVEL_ITINERAR3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CLASCO_GT_ERP_TRAVEL_ITINERAR3
  INTO TABLE IT_CLASCO_GT_ERP_TRAVEL_ITINERAR3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CLASCO_GT_ERP_TRAVEL_ITINERAR3
*  INTO TABLE @DATA(IT_CLASCO_GT_ERP_TRAVEL_ITINERAR32).
*--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_CLASCO_GT_ERP_TRAVEL_ITINERAR3 INDEX 1 INTO DATA(WA_CLASCO_GT_ERP_TRAVEL_ITINERAR32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CLASCO_GT_ERP_TRAVEL_ITINERAR3 ASSIGNING <CLASCO_GT_ERP_TRAVEL_ITINERAR3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CLASCO_GT_ERP_TRAVEL_ITINERAR3>-CONTROLLER = 1.
<CLASCO_GT_ERP_TRAVEL_ITINERAR3>-UNIQUE_ID = 1.
<CLASCO_GT_ERP_TRAVEL_ITINERAR3>-CONTROLLER = 1.
<CLASCO_GT_ERP_TRAVEL_ITINERAR3>-ID = 1.
<CLASCO_GT_ERP_TRAVEL_ITINERAR3>-CHOICE = 1.

ENDLOOP.

LOOP AT IT_CLASCO_GT_ERP_TRAVEL_ITINERAR3 INTO WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3-SELECTION, sy-vline,
  WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3-CONTROLLER, sy-vline,
  WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3-ERRORS, sy-vline,
  WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3-CONTROLLER, sy-vline,
  WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3-ERROR, sy-vline,
  WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3-CONTROLLER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3 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_CLASCO_GT_ERP_TRAVEL_ITINERAR3 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_CLASCO_GT_ERP_TRAVEL_ITINERAR3 INTO WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3.


*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_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR, 
CONTROLLER TYPE STRING,
UNIQUE_ID TYPE STRING,
CONTROLLER TYPE STRING,
ID TYPE STRING,
CHOICE TYPE STRING,
SELECTION TYPE STRING,
CONTROLLER TYPE STRING,
ERRORS TYPE STRING,
CONTROLLER TYPE STRING,
ERROR TYPE STRING,
CONTROLLER TYPE STRING,
ERROR_CODE TYPE STRING,
SEVERITY TYPE STRING,
ERROR_MESSAGE TYPE STRING,
SUCCESS TYPE STRING,
CONTROLLER TYPE STRING,
ECHO_TOKEN TYPE STRING,
TIME_STAMP TYPE STRING,
TARGET TYPE STRING,
VERSION TYPE STRING,
SEQUENCE_NMBR TYPE STRING,
PRIMARY_LANG_ID TYPE STRING,
ALT_LANG_ID TYPE STRING,
CORRELATION_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_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_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-CONTROLLER sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-UNIQUE_ID sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-CONTROLLER sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-ID sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-CHOICE sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-SELECTION sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-CONTROLLER sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-ERRORS sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-CONTROLLER sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-ERROR sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-CONTROLLER sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-ERROR_CODE sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-SEVERITY sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-ERROR_MESSAGE sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-SUCCESS sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-CONTROLLER sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-ECHO_TOKEN sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-TIME_STAMP sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-TARGET sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-VERSION sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-SEQUENCE_NMBR sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-PRIMARY_LANG_ID sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-ALT_LANG_ID sy-vline 
WA_CLASCO_GT_ERP_TRAVEL_ITINERAR3_STR-CORRELATION_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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