ABAP Select data from SAP table ICAOPACTY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICAOPACTY
*  INTO TABLE @DATA(IT_ICAOPACTY2).
*--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_ICAOPACTY INDEX 1 INTO DATA(WA_ICAOPACTY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICAOPACTY>-MANDT = 1.
<ICAOPACTY>-OPERATIONACTIVITY = 1.
<ICAOPACTY>-OPERATIONACTYVERSIONCOUNTER = 1.
<ICAOPACTY>-OPERATIONACTIVITYNAME = 1.
<ICAOPACTY>-OPERATIONACTSTSANDACTNSCHEMA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICAOPACTY-SFISTATUSANDACTIONSCHEMA, sy-vline,
  WA_ICAOPACTY-ISRELEASED, sy-vline,
  WA_ICAOPACTY-ORIGINALCHGALERTCOUNT, sy-vline,
  WA_ICAOPACTY-CREATEDBYUSER, sy-vline,
  WA_ICAOPACTY-CREATIONDATETIME, sy-vline,
  WA_ICAOPACTY-CHANGEDBY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICAOPACTY 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_ICAOPACTY 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_ICAOPACTY INTO WA_ICAOPACTY.


*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_ICAOPACTY_STR, 
MANDT TYPE STRING,
OPERATIONACTIVITY TYPE STRING,
OPERATIONACTYVERSIONCOUNTER TYPE STRING,
OPERATIONACTIVITYNAME TYPE STRING,
OPERATIONACTSTSANDACTNSCHEMA TYPE STRING,
SFISTATUSANDACTIONSCHEMA TYPE STRING,
ISRELEASED TYPE STRING,
ORIGINALCHGALERTCOUNT TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
CHANGEDBY TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICAOPACTY_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_ICAOPACTY_STR-MANDT sy-vline 
WA_ICAOPACTY_STR-OPERATIONACTIVITY sy-vline 
WA_ICAOPACTY_STR-OPERATIONACTYVERSIONCOUNTER sy-vline 
WA_ICAOPACTY_STR-OPERATIONACTIVITYNAME sy-vline 
WA_ICAOPACTY_STR-OPERATIONACTSTSANDACTNSCHEMA sy-vline 
WA_ICAOPACTY_STR-SFISTATUSANDACTIONSCHEMA sy-vline 
WA_ICAOPACTY_STR-ISRELEASED sy-vline 
WA_ICAOPACTY_STR-ORIGINALCHGALERTCOUNT sy-vline 
WA_ICAOPACTY_STR-CREATEDBYUSER sy-vline 
WA_ICAOPACTY_STR-CREATIONDATETIME sy-vline 
WA_ICAOPACTY_STR-CHANGEDBY sy-vline 
WA_ICAOPACTY_STR-LASTCHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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