ABAP Select data from SAP table PTRV_TRIPS_FOR_APPROVAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTRV_TRIPS_FOR_APPROVAL
*  INTO TABLE @DATA(IT_PTRV_TRIPS_FOR_APPROVAL2).
*--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_PTRV_TRIPS_FOR_APPROVAL INDEX 1 INTO DATA(WA_PTRV_TRIPS_FOR_APPROVAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTRV_TRIPS_FOR_APPROVAL>-EMPLOYEENUMBER = 1.
<PTRV_TRIPS_FOR_APPROVAL>-TRIPNUMBER = 1.
<PTRV_TRIPS_FOR_APPROVAL>-PERIOD_NR = 1.
<PTRV_TRIPS_FOR_APPROVAL>-STEXT = 1.
<PTRV_TRIPS_FOR_APPROVAL>-REQUEST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTRV_TRIPS_FOR_APPROVAL-TRAVEL_PLAN, sy-vline,
  WA_PTRV_TRIPS_FOR_APPROVAL-EXPENSES, sy-vline,
  WA_PTRV_TRIPS_FOR_APPROVAL-DATEDEP, sy-vline,
  WA_PTRV_TRIPS_FOR_APPROVAL-TIMEDEP, sy-vline,
  WA_PTRV_TRIPS_FOR_APPROVAL-DATEARR, sy-vline,
  WA_PTRV_TRIPS_FOR_APPROVAL-TIMEARR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTRV_TRIPS_FOR_APPROVAL 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_PTRV_TRIPS_FOR_APPROVAL 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_PTRV_TRIPS_FOR_APPROVAL INTO WA_PTRV_TRIPS_FOR_APPROVAL.


*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_PTRV_TRIPS_FOR_APPROVAL_STR, 
EMPLOYEENUMBER TYPE STRING,
TRIPNUMBER TYPE STRING,
PERIOD_NR TYPE STRING,
STEXT TYPE STRING,
REQUEST TYPE STRING,
TRAVEL_PLAN TYPE STRING,
EXPENSES TYPE STRING,
DATEDEP TYPE STRING,
TIMEDEP TYPE STRING,
DATEARR TYPE STRING,
TIMEARR TYPE STRING,
DESTINATION TYPE STRING,
REASON TYPE STRING,
COUNTRY TYPE STRING,
COUNTRY_TEXT TYPE STRING,
AMOUNT_SUM_REIMB TYPE STRING,
AMOUNT_SUM_TOTAL TYPE STRING,
AMOUNT_SUM_DELTA TYPE STRING,
ESTIMATED_COST TYPE STRING,
AMOUNT_SUM_ADVANCE TYPE STRING,
CURRENCY TYPE STRING,
NR_OPT_ARCHIVE TYPE STRING,
NR_ATTACHMENTS TYPE STRING,
HISTORY TYPE STRING,
NR_RECEIPTS TYPE STRING,
PNR_LOCATOR TYPE STRING,
POLICY_VIOLATION TYPE STRING,
EXCEPTION_FLAG TYPE STRING,
SUBMISSION_STATUS TYPE STRING,
SUBMISSION_STATUS_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTRV_TRIPS_FOR_APPROVAL_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_PTRV_TRIPS_FOR_APPROVAL_STR-EMPLOYEENUMBER sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-TRIPNUMBER sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-PERIOD_NR sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-STEXT sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-REQUEST sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-TRAVEL_PLAN sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-EXPENSES sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-DATEDEP sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-TIMEDEP sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-DATEARR sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-TIMEARR sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-DESTINATION sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-REASON sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-COUNTRY sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-COUNTRY_TEXT sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-AMOUNT_SUM_REIMB sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-AMOUNT_SUM_TOTAL sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-AMOUNT_SUM_DELTA sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-ESTIMATED_COST sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-AMOUNT_SUM_ADVANCE sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-CURRENCY sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-NR_OPT_ARCHIVE sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-NR_ATTACHMENTS sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-HISTORY sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-NR_RECEIPTS sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-PNR_LOCATOR sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-POLICY_VIOLATION sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-EXCEPTION_FLAG sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-SUBMISSION_STATUS sy-vline 
WA_PTRV_TRIPS_FOR_APPROVAL_STR-SUBMISSION_STATUS_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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