ABAP Select data from SAP table AMI_HOTEL_INFO_TYPE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AMI_HOTEL_INFO_TYPE
*  INTO TABLE @DATA(IT_AMI_HOTEL_INFO_TYPE2).
*--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_AMI_HOTEL_INFO_TYPE INDEX 1 INTO DATA(WA_AMI_HOTEL_INFO_TYPE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AMI_HOTEL_INFO_TYPE>-CONTROLLER = 1.
<AMI_HOTEL_INFO_TYPE>-HOTEL_OCCUPANCY = 1.
<AMI_HOTEL_INFO_TYPE>-CONTROLLER = 1.
<AMI_HOTEL_INFO_TYPE>-CODE = 1.
<AMI_HOTEL_INFO_TYPE>-NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AMI_HOTEL_INFO_TYPE-HOTEL, sy-vline,
  WA_AMI_HOTEL_INFO_TYPE-CONTROLLER, sy-vline,
  WA_AMI_HOTEL_INFO_TYPE-BASE, sy-vline,
  WA_AMI_HOTEL_INFO_TYPE-CONTROLLER, sy-vline,
  WA_AMI_HOTEL_INFO_TYPE-NAME, sy-vline,
  WA_AMI_HOTEL_INFO_TYPE-ADDRESS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AMI_HOTEL_INFO_TYPE 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_AMI_HOTEL_INFO_TYPE 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_AMI_HOTEL_INFO_TYPE INTO WA_AMI_HOTEL_INFO_TYPE.


*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_AMI_HOTEL_INFO_TYPE_STR, 
CONTROLLER TYPE STRING,
HOTEL_OCCUPANCY TYPE STRING,
CONTROLLER TYPE STRING,
CODE TYPE STRING,
NAME TYPE STRING,
HOTEL TYPE STRING,
CONTROLLER TYPE STRING,
BASE TYPE STRING,
CONTROLLER TYPE STRING,
NAME TYPE STRING,
ADDRESS TYPE STRING,
CONTROLLER TYPE STRING,
ADDRESS_LINE TYPE STRING,
ZIP_CODE TYPE STRING,
CITY TYPE STRING,
STATE TYPE STRING,
COUNTRY TYPE STRING,
GEO_CODE TYPE STRING,
CONTROLLER TYPE STRING,
LATITUDE TYPE STRING,
LONGITUDE TYPE STRING,
PHONE TYPE STRING,
FAX TYPE STRING,
EMAIL TYPE STRING,
TELEX TYPE STRING,
CODE TYPE STRING,
COMPANY TYPE STRING,
CONTROLLER TYPE STRING,
CODE TYPE STRING,
NAME TYPE STRING,
ACCESS_TYPE TYPE STRING,
ADDITIONAL_INFO TYPE STRING,
CHECK_IN_POLICY_INFO TYPE STRING,
CONTROLLER TYPE STRING,
CODE TYPE STRING,
NAME TYPE STRING,
CANCELLATION_POLICY_INFO TYPE STRING,
CONTROLLER TYPE STRING,
FREE_FLOW_TEXT TYPE STRING,
ROOM_TYPE TYPE STRING,
CONTROLLER TYPE STRING,
CODE TYPE STRING,
GDS_ROOM_TYPE TYPE STRING,
ROOM_CODE TYPE STRING,
BED_TYPE TYPE STRING,
ROOM_RATE_DESCRIPTION_LIST TYPE STRING,
SPECIAL_RATE_TYPE TYPE STRING,
CONTROLLER TYPE STRING,
CODE TYPE STRING,
NAME TYPE STRING,
SPECIAL_RATE_LIST TYPE STRING,
MEAL_TYPE TYPE STRING,
CONTROLLER TYPE STRING,
CODE TYPE STRING,
NAME TYPE STRING,
SMOKING_PREFERENCE TYPE STRING,
CHECK_IN_PREFERENCE TYPE STRING,
CONTROLLER TYPE STRING,
VALUE TYPE STRING,
TIME TYPE STRING,
CHECK_OUT_PREFERENCE TYPE STRING,
CONTROLLER TYPE STRING,
VALUE TYPE STRING,
TIME TYPE STRING,
SPECIAL_SERVICE_REQUEST_LIST TYPE STRING,
SELL_INFO_LIST TYPE STRING,
BED_NUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AMI_HOTEL_INFO_TYPE_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_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-HOTEL_OCCUPANCY sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CODE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-NAME sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-HOTEL sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-BASE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-NAME sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-ADDRESS sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-ADDRESS_LINE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-ZIP_CODE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CITY sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-STATE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-COUNTRY sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-GEO_CODE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-LATITUDE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-LONGITUDE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-PHONE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-FAX sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-EMAIL sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-TELEX sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CODE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-COMPANY sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CODE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-NAME sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-ACCESS_TYPE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-ADDITIONAL_INFO sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CHECK_IN_POLICY_INFO sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CODE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-NAME sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CANCELLATION_POLICY_INFO sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-FREE_FLOW_TEXT sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-ROOM_TYPE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CODE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-GDS_ROOM_TYPE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-ROOM_CODE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-BED_TYPE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-ROOM_RATE_DESCRIPTION_LIST sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-SPECIAL_RATE_TYPE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CODE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-NAME sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-SPECIAL_RATE_LIST sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-MEAL_TYPE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CODE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-NAME sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-SMOKING_PREFERENCE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CHECK_IN_PREFERENCE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-VALUE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-TIME sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CHECK_OUT_PREFERENCE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-VALUE sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-TIME sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-SPECIAL_SERVICE_REQUEST_LIST sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-SELL_INFO_LIST sy-vline 
WA_AMI_HOTEL_INFO_TYPE_STR-BED_NUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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