ABAP Select data from SAP table AMI_TRAVELLER_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_TRAVELLER_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_TRAVELLER_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_TRAVELLER_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_TRAVELLER_INFO_TYPE TYPE STANDARD TABLE OF AMI_TRAVELLER_INFO_TYPE,
      WA_AMI_TRAVELLER_INFO_TYPE TYPE AMI_TRAVELLER_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_TRAVELLER_INFO_TYPE> TYPE AMI_TRAVELLER_INFO_TYPE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AMI_TRAVELLER_INFO_TYPE
*  INTO TABLE @DATA(IT_AMI_TRAVELLER_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_TRAVELLER_INFO_TYPE INDEX 1 INTO DATA(WA_AMI_TRAVELLER_INFO_TYPE2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AMI_TRAVELLER_INFO_TYPE-TYPE, sy-vline,
  WA_AMI_TRAVELLER_INFO_TYPE-CONTROLLER, sy-vline,
  WA_AMI_TRAVELLER_INFO_TYPE-CODE, sy-vline,
  WA_AMI_TRAVELLER_INFO_TYPE-NAME, sy-vline,
  WA_AMI_TRAVELLER_INFO_TYPE-IDENTITY, sy-vline,
  WA_AMI_TRAVELLER_INFO_TYPE-CONTROLLER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AMI_TRAVELLER_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_TRAVELLER_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_TRAVELLER_INFO_TYPE INTO WA_AMI_TRAVELLER_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_TRAVELLER_INFO_TYPE_STR, 
CONTROLLER TYPE STRING,
ROLE TYPE STRING,
CONTROLLER TYPE STRING,
CODE TYPE STRING,
NAME TYPE STRING,
TYPE TYPE STRING,
CONTROLLER TYPE STRING,
CODE TYPE STRING,
NAME TYPE STRING,
IDENTITY TYPE STRING,
CONTROLLER TYPE STRING,
TITLE TYPE STRING,
FIRST_NAME TYPE STRING,
LAST_NAME TYPE STRING,
GENDER TYPE STRING,
DATE_OF_BIRTH TYPE STRING,
CONTACTS TYPE STRING,
CORPORATE_INFO TYPE STRING,
CONTROLLER TYPE STRING,
EMPLOYEE_NUMBER TYPE STRING,
COST_CENTERS TYPE STRING,
ROLES TYPE STRING,
AUTHENTIFICATION TYPE STRING,
CONTROLLER TYPE STRING,
TRAVELLER_USER_ID TYPE STRING,
TRAVELLER_LOGIN_NAME TYPE STRING,
PROFILE_RECORD_LOCATOR TYPE STRING,
LIST_CUSTOM_FIELDS_INFO TYPE STRING,
ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AMI_TRAVELLER_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_TRAVELLER_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-ROLE sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-CODE sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-NAME sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-TYPE sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-CODE sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-NAME sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-IDENTITY sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-TITLE sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-FIRST_NAME sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-LAST_NAME sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-GENDER sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-DATE_OF_BIRTH sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-CONTACTS sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-CORPORATE_INFO sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-EMPLOYEE_NUMBER sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-COST_CENTERS sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-ROLES sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-AUTHENTIFICATION sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-CONTROLLER sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-TRAVELLER_USER_ID sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-TRAVELLER_LOGIN_NAME sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-PROFILE_RECORD_LOCATOR sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-LIST_CUSTOM_FIELDS_INFO sy-vline 
WA_AMI_TRAVELLER_INFO_TYPE_STR-ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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