ABAP Select data from SAP table AMI_APPROVE_TRIP_RESPONSE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AMI_APPROVE_TRIP_RESPONSE 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_APPROVE_TRIP_RESPONSE. 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_APPROVE_TRIP_RESPONSE 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_APPROVE_TRIP_RESPONSE TYPE STANDARD TABLE OF AMI_APPROVE_TRIP_RESPONSE,
      WA_AMI_APPROVE_TRIP_RESPONSE TYPE AMI_APPROVE_TRIP_RESPONSE,
      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_APPROVE_TRIP_RESPONSE> TYPE AMI_APPROVE_TRIP_RESPONSE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AMI_APPROVE_TRIP_RESPONSE
*  INTO TABLE @DATA(IT_AMI_APPROVE_TRIP_RESPONSE2).
*--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_APPROVE_TRIP_RESPONSE INDEX 1 INTO DATA(WA_AMI_APPROVE_TRIP_RESPONSE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AMI_APPROVE_TRIP_RESPONSE>-CONTROLLER = 1.
<AMI_APPROVE_TRIP_RESPONSE>-BASE = 1.
<AMI_APPROVE_TRIP_RESPONSE>-CONTROLLER = 1.
<AMI_APPROVE_TRIP_RESPONSE>-ERROR = 1.
<AMI_APPROVE_TRIP_RESPONSE>-CONTROLLER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AMI_APPROVE_TRIP_RESPONSE-CODE, sy-vline,
  WA_AMI_APPROVE_TRIP_RESPONSE-TYPE, sy-vline,
  WA_AMI_APPROVE_TRIP_RESPONSE-SEVERITY, sy-vline,
  WA_AMI_APPROVE_TRIP_RESPONSE-DESCRIPTION, sy-vline,
  WA_AMI_APPROVE_TRIP_RESPONSE-INFO, sy-vline,
  WA_AMI_APPROVE_TRIP_RESPONSE-TRIP_PLAN_IN_ERROR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AMI_APPROVE_TRIP_RESPONSE 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_APPROVE_TRIP_RESPONSE 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_APPROVE_TRIP_RESPONSE INTO WA_AMI_APPROVE_TRIP_RESPONSE.


*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_APPROVE_TRIP_RESPONSE_STR, 
CONTROLLER TYPE STRING,
BASE TYPE STRING,
CONTROLLER TYPE STRING,
ERROR TYPE STRING,
CONTROLLER TYPE STRING,
CODE TYPE STRING,
TYPE TYPE STRING,
SEVERITY TYPE STRING,
DESCRIPTION TYPE STRING,
INFO TYPE STRING,
TRIP_PLAN_IN_ERROR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AMI_APPROVE_TRIP_RESPONSE_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_APPROVE_TRIP_RESPONSE_STR-CONTROLLER sy-vline 
WA_AMI_APPROVE_TRIP_RESPONSE_STR-BASE sy-vline 
WA_AMI_APPROVE_TRIP_RESPONSE_STR-CONTROLLER sy-vline 
WA_AMI_APPROVE_TRIP_RESPONSE_STR-ERROR sy-vline 
WA_AMI_APPROVE_TRIP_RESPONSE_STR-CONTROLLER sy-vline 
WA_AMI_APPROVE_TRIP_RESPONSE_STR-CODE sy-vline 
WA_AMI_APPROVE_TRIP_RESPONSE_STR-TYPE sy-vline 
WA_AMI_APPROVE_TRIP_RESPONSE_STR-SEVERITY sy-vline 
WA_AMI_APPROVE_TRIP_RESPONSE_STR-DESCRIPTION sy-vline 
WA_AMI_APPROVE_TRIP_RESPONSE_STR-INFO sy-vline 
WA_AMI_APPROVE_TRIP_RESPONSE_STR-TRIP_PLAN_IN_ERROR sy-vline      INTO ld_text SEPARATED BY SPACE.

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