ABAP Select data from SAP table SPAOC_TRV_SUMMARY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SPAOC_TRV_SUMMARY
*  INTO TABLE @DATA(IT_SPAOC_TRV_SUMMARY2).
*--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_SPAOC_TRV_SUMMARY INDEX 1 INTO DATA(WA_SPAOC_TRV_SUMMARY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SPAOC_TRV_SUMMARY>-TRAVELANDEXPENSEHEADERID = 1.
<SPAOC_TRV_SUMMARY>-REASON = 1.
<SPAOC_TRV_SUMMARY>-MAINDESTINATIONFULLNAME = 1.
<SPAOC_TRV_SUMMARY>-FROMDATE = 1.
<SPAOC_TRV_SUMMARY>-TODATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SPAOC_TRV_SUMMARY-TOTALREIMBURSEMENT, sy-vline,
  WA_SPAOC_TRV_SUMMARY-VALUE, sy-vline,
  WA_SPAOC_TRV_SUMMARY-CURRENCYCODE, sy-vline,
  WA_SPAOC_TRV_SUMMARY-DECIMALS, sy-vline,
  WA_SPAOC_TRV_SUMMARY-STATUS, sy-vline,
  WA_SPAOC_TRV_SUMMARY-STATUSDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SPAOC_TRV_SUMMARY 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_SPAOC_TRV_SUMMARY 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_SPAOC_TRV_SUMMARY INTO WA_SPAOC_TRV_SUMMARY.


*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_SPAOC_TRV_SUMMARY_STR, 
TRAVELANDEXPENSEHEADERID TYPE STRING,
REASON TYPE STRING,
MAINDESTINATIONFULLNAME TYPE STRING,
FROMDATE TYPE STRING,
TODATE TYPE STRING,
TOTALREIMBURSEMENT TYPE STRING,
VALUE TYPE STRING,
CURRENCYCODE TYPE STRING,
DECIMALS TYPE STRING,
STATUS TYPE STRING,
STATUSDATE TYPE STRING,
EDITABLE TYPE STRING,
DELETABLE TYPE STRING,
PERSONALNUMBER TYPE STRING,
NUMBEROFERRORS TYPE STRING,
ISRECALCULATIONNEEDED TYPE STRING,
CATEGORY TYPE STRING,
CATEGORYDESCRIPTION TYPE STRING,
SAVEDRAFT TYPE STRING,
DUMMY_SUMMARY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SPAOC_TRV_SUMMARY_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_SPAOC_TRV_SUMMARY_STR-TRAVELANDEXPENSEHEADERID sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-REASON sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-MAINDESTINATIONFULLNAME sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-FROMDATE sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-TODATE sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-TOTALREIMBURSEMENT sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-VALUE sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-CURRENCYCODE sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-DECIMALS sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-STATUS sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-STATUSDATE sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-EDITABLE sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-DELETABLE sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-PERSONALNUMBER sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-NUMBEROFERRORS sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-ISRECALCULATIONNEEDED sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-CATEGORY sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-CATEGORYDESCRIPTION sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-SAVEDRAFT sy-vline 
WA_SPAOC_TRV_SUMMARY_STR-DUMMY_SUMMARY sy-vline      INTO ld_text SEPARATED BY SPACE.

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