ABAP Select data from SAP table TA23HOTELS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TA23HOTELS 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 TA23HOTELS. 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 TA23HOTELS 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_TA23HOTELS TYPE STANDARD TABLE OF TA23HOTELS,
      WA_TA23HOTELS TYPE TA23HOTELS,
      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: <TA23HOTELS> TYPE TA23HOTELS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TA23HOTELS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TA23HOTELS
  INTO TABLE IT_TA23HOTELS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TA23HOTELS
*  INTO TABLE @DATA(IT_TA23HOTELS2).
*--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_TA23HOTELS INDEX 1 INTO DATA(WA_TA23HOTELS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TA23HOTELS ASSIGNING <TA23HOTELS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TA23HOTELS>-MANDT = 1.
<TA23HOTELS>-GDS = 1.
<TA23HOTELS>-CHAIN = 1.
<TA23HOTELS>-LOCATION = 1.
<TA23HOTELS>-PROPERTY = 1.

ENDLOOP.

LOOP AT IT_TA23HOTELS INTO WA_TA23HOTELS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TA23HOTELS-LATITUDE, sy-vline,
  WA_TA23HOTELS-LONGITUDE, sy-vline,
  WA_TA23HOTELS-COUNTRY, sy-vline,
  WA_TA23HOTELS-REGION, sy-vline,
  WA_TA23HOTELS-CITY, sy-vline,
  WA_TA23HOTELS-POST_CODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TA23HOTELS 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_TA23HOTELS 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_TA23HOTELS INTO WA_TA23HOTELS.


*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.

*Conversion exit FMCTP, internal->external for field PROPERTY
CALL FUNCTION 'CONVERSION_EXIT_FMCTP_OUTPUT'
  EXPORTING
    input =                      WA_TA23HOTELS-PROPERTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TA23HOTELS-PROPERTY.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TA23HOTELS_STR, 
MANDT TYPE STRING,
GDS TYPE STRING,
CHAIN TYPE STRING,
LOCATION TYPE STRING,
PROPERTY TYPE STRING,
LATITUDE TYPE STRING,
LONGITUDE TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
CITY TYPE STRING,
POST_CODE TYPE STRING,
STREET TYPE STRING,
HOUSE_NUM TYPE STRING,
NAME TYPE STRING,
NAME_UL TYPE STRING,
PHONE TYPE STRING,
FAX TYPE STRING,
URL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TA23HOTELS_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_TA23HOTELS_STR-MANDT sy-vline 
WA_TA23HOTELS_STR-GDS sy-vline 
WA_TA23HOTELS_STR-CHAIN sy-vline 
WA_TA23HOTELS_STR-LOCATION sy-vline 
WA_TA23HOTELS_STR-PROPERTY sy-vline 
WA_TA23HOTELS_STR-LATITUDE sy-vline 
WA_TA23HOTELS_STR-LONGITUDE sy-vline 
WA_TA23HOTELS_STR-COUNTRY sy-vline 
WA_TA23HOTELS_STR-REGION sy-vline 
WA_TA23HOTELS_STR-CITY sy-vline 
WA_TA23HOTELS_STR-POST_CODE sy-vline 
WA_TA23HOTELS_STR-STREET sy-vline 
WA_TA23HOTELS_STR-HOUSE_NUM sy-vline 
WA_TA23HOTELS_STR-NAME sy-vline 
WA_TA23HOTELS_STR-NAME_UL sy-vline 
WA_TA23HOTELS_STR-PHONE sy-vline 
WA_TA23HOTELS_STR-FAX sy-vline 
WA_TA23HOTELS_STR-URL sy-vline      INTO ld_text SEPARATED BY SPACE.

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