ABAP Select data from SAP table TRMC_PASSENGER_RAIL_DETAIL_AD1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TRMC_PASSENGER_RAIL_DETAIL_AD1 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 TRMC_PASSENGER_RAIL_DETAIL_AD1. 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 TRMC_PASSENGER_RAIL_DETAIL_AD1 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_TRMC_PASSENGER_RAIL_DETAIL_AD1 TYPE STANDARD TABLE OF TRMC_PASSENGER_RAIL_DETAIL_AD1,
      WA_TRMC_PASSENGER_RAIL_DETAIL_AD1 TYPE TRMC_PASSENGER_RAIL_DETAIL_AD1,
      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: <TRMC_PASSENGER_RAIL_DETAIL_AD1> TYPE TRMC_PASSENGER_RAIL_DETAIL_AD1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TRMC_PASSENGER_RAIL_DETAIL_AD1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TRMC_PASSENGER_RAIL_DETAIL_AD1
  INTO TABLE IT_TRMC_PASSENGER_RAIL_DETAIL_AD1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRMC_PASSENGER_RAIL_DETAIL_AD1
*  INTO TABLE @DATA(IT_TRMC_PASSENGER_RAIL_DETAIL_AD12).
*--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_TRMC_PASSENGER_RAIL_DETAIL_AD1 INDEX 1 INTO DATA(WA_TRMC_PASSENGER_RAIL_DETAIL_AD12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TRMC_PASSENGER_RAIL_DETAIL_AD1 ASSIGNING <TRMC_PASSENGER_RAIL_DETAIL_AD1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRMC_PASSENGER_RAIL_DETAIL_AD1>-CONTROLLER = 1.
<TRMC_PASSENGER_RAIL_DETAIL_AD1>-PASSENGER_RAIL_DETAIL_ADDENDUM = 1.
<TRMC_PASSENGER_RAIL_DETAIL_AD1>-CONTROLLER = 1.
<TRMC_PASSENGER_RAIL_DETAIL_AD1>-FINANCIAL_RECORD_HEADER = 1.
<TRMC_PASSENGER_RAIL_DETAIL_AD1>-CONTROLLER = 1.

ENDLOOP.

LOOP AT IT_TRMC_PASSENGER_RAIL_DETAIL_AD1 INTO WA_TRMC_PASSENGER_RAIL_DETAIL_AD1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRMC_PASSENGER_RAIL_DETAIL_AD1-SEQUENCE_NUM, sy-vline,
  WA_TRMC_PASSENGER_RAIL_DETAIL_AD1-MAINTENANCE_CODE, sy-vline,
  WA_TRMC_PASSENGER_RAIL_DETAIL_AD1-MASTER_CARD_REC_SEQ_NUM, sy-vline,
  WA_TRMC_PASSENGER_RAIL_DETAIL_AD1-MASTER_CARD_LOAD_DATE, sy-vline,
  WA_TRMC_PASSENGER_RAIL_DETAIL_AD1-MASTER_CARD_LOAD_TIME, sy-vline,
  WA_TRMC_PASSENGER_RAIL_DETAIL_AD1-REJECTION_REASON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRMC_PASSENGER_RAIL_DETAIL_AD1 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_TRMC_PASSENGER_RAIL_DETAIL_AD1 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_TRMC_PASSENGER_RAIL_DETAIL_AD1 INTO WA_TRMC_PASSENGER_RAIL_DETAIL_AD1.


*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_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR, 
CONTROLLER TYPE STRING,
PASSENGER_RAIL_DETAIL_ADDENDUM TYPE STRING,
CONTROLLER TYPE STRING,
FINANCIAL_RECORD_HEADER TYPE STRING,
CONTROLLER TYPE STRING,
SEQUENCE_NUM TYPE STRING,
MAINTENANCE_CODE TYPE STRING,
MASTER_CARD_REC_SEQ_NUM TYPE STRING,
MASTER_CARD_LOAD_DATE TYPE STRING,
MASTER_CARD_LOAD_TIME TYPE STRING,
REJECTION_REASON TYPE STRING,
REJECTION_REASON2 TYPE STRING,
REJECTION_REASON3 TYPE STRING,
TICKET_NUMBER TYPE STRING,
SEQUENCE_NUMBER TYPE STRING,
TRAVEL_OFFICE_NUMBER TYPE STRING,
TRAVEL_OFFICE_NAME TYPE STRING,
PROCEDURE_ID TYPE STRING,
SERVICE_TYPE TYPE STRING,
SERVICE_NATURE TYPE STRING,
TRAVEL_DATE TYPE STRING,
SERVICE_AMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CURRENCY_EXPONENT TYPE STRING,
CURRENCY_SIGN TYPE STRING,
CONTENT TYPE STRING,
CURRENCY_CODE TYPE STRING,
FULL_VATAMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CURRENCY_EXPONENT TYPE STRING,
CURRENCY_SIGN TYPE STRING,
CONTENT TYPE STRING,
HALF_VATAMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CURRENCY_EXPONENT TYPE STRING,
CURRENCY_SIGN TYPE STRING,
CONTENT TYPE STRING,
FULL_VATGROSS_AMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CURRENCY_EXPONENT TYPE STRING,
CURRENCY_SIGN TYPE STRING,
CONTENT TYPE STRING,
HALF_VATGROSS_AMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CURRENCY_EXPONENT TYPE STRING,
CURRENCY_SIGN TYPE STRING,
CONTENT TYPE STRING,
SAMPLE_NUMBER TYPE STRING,
START_STATION TYPE STRING,
DESTINATION_STATION TYPE STRING,
TRAFFIC_CODE TYPE STRING,
GENERIC_CODE TYPE STRING,
REDUCT_CODE TYPE STRING,
GENERIC_NUMBER TYPE STRING,
REDUCT_NUMBER TYPE STRING,
TRANSPORTATION_OTHER_CODE TYPE STRING,
GENERIC_OTHER_CODE TYPE STRING,
REDUCT_OTHER_CODE TYPE STRING,
GENERIC_OTHER_NUMBER TYPE STRING,
REDUCT_OTHER_NUMBER TYPE STRING,
NUMBER_OF_ADULTS TYPE STRING,
NUMBER_OF_CHILDREN TYPE STRING,
SERVICE_PROVIDER TYPE STRING,
SERVICES_OFFERED TYPE STRING,
CLASS TYPE STRING,
PASSENGER_NAME TYPE STRING,
TAX_ADDENDUM_5300 TYPE STRING,
CUSTOM_FINANCIAL_DATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_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_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTROLLER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-PASSENGER_RAIL_DETAIL_ADDENDUM sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTROLLER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-FINANCIAL_RECORD_HEADER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTROLLER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-SEQUENCE_NUM sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-MAINTENANCE_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-MASTER_CARD_REC_SEQ_NUM sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-MASTER_CARD_LOAD_DATE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-MASTER_CARD_LOAD_TIME sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-REJECTION_REASON sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-REJECTION_REASON2 sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-REJECTION_REASON3 sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-TICKET_NUMBER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-SEQUENCE_NUMBER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-TRAVEL_OFFICE_NUMBER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-TRAVEL_OFFICE_NAME sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-PROCEDURE_ID sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-SERVICE_TYPE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-SERVICE_NATURE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-TRAVEL_DATE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-SERVICE_AMOUNT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTROLLER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_EXPONENT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_SIGN sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTENT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-FULL_VATAMOUNT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTROLLER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_EXPONENT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_SIGN sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTENT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-HALF_VATAMOUNT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTROLLER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_EXPONENT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_SIGN sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTENT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-FULL_VATGROSS_AMOUNT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTROLLER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_EXPONENT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_SIGN sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTENT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-HALF_VATGROSS_AMOUNT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTROLLER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_EXPONENT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CURRENCY_SIGN sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CONTENT sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-SAMPLE_NUMBER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-START_STATION sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-DESTINATION_STATION sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-TRAFFIC_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-GENERIC_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-REDUCT_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-GENERIC_NUMBER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-REDUCT_NUMBER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-TRANSPORTATION_OTHER_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-GENERIC_OTHER_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-REDUCT_OTHER_CODE sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-GENERIC_OTHER_NUMBER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-REDUCT_OTHER_NUMBER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-NUMBER_OF_ADULTS sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-NUMBER_OF_CHILDREN sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-SERVICE_PROVIDER sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-SERVICES_OFFERED sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CLASS sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-PASSENGER_NAME sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-TAX_ADDENDUM_5300 sy-vline 
WA_TRMC_PASSENGER_RAIL_DETAIL_AD1_STR-CUSTOM_FINANCIAL_DATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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