ABAP Select data from SAP table IALERTRISK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IALERTRISK
*  INTO TABLE @DATA(IT_IALERTRISK2).
*--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_IALERTRISK INDEX 1 INTO DATA(WA_IALERTRISK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IALERTRISK>-MANDT = 1.
<IALERTRISK>-MASTERPROJECT = 1.
<IALERTRISK>-MASTERPROJECTUUID = 1.
<IALERTRISK>-MASTERPROJECTTYPE = 1.
<IALERTRISK>-MASTERPROJECTSTAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IALERTRISK-STARTDATE, sy-vline,
  WA_IALERTRISK-ENDDATE, sy-vline,
  WA_IALERTRISK-CUSTOMER, sy-vline,
  WA_IALERTRISK-MASTERPROJECTORGANIZATION, sy-vline,
  WA_IALERTRISK-MASTERPROJECTISCONFIDENTIAL, sy-vline,
  WA_IALERTRISK-COUNTRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IALERTRISK 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_IALERTRISK 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_IALERTRISK INTO WA_IALERTRISK.


*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 ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IALERTRISK-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IALERTRISK-CUSTOMER.
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_IALERTRISK_STR, 
MANDT TYPE STRING,
MASTERPROJECT TYPE STRING,
MASTERPROJECTUUID TYPE STRING,
MASTERPROJECTTYPE TYPE STRING,
MASTERPROJECTSTAGE TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
CUSTOMER TYPE STRING,
MASTERPROJECTORGANIZATION TYPE STRING,
MASTERPROJECTISCONFIDENTIAL TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
WORKTYPE TYPE STRING,
INDUSTRY TYPE STRING,
PROJECTRISK TYPE STRING,
FINANCIALRISK TYPE STRING,
TECHNICALRISK TYPE STRING,
OVERALLRISK TYPE STRING,
MASTERPROJECTALERT TYPE STRING,
MSTRPROJALERTVALUE TYPE STRING,
UNITOFMEASURE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IALERTRISK_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_IALERTRISK_STR-MANDT sy-vline 
WA_IALERTRISK_STR-MASTERPROJECT sy-vline 
WA_IALERTRISK_STR-MASTERPROJECTUUID sy-vline 
WA_IALERTRISK_STR-MASTERPROJECTTYPE sy-vline 
WA_IALERTRISK_STR-MASTERPROJECTSTAGE sy-vline 
WA_IALERTRISK_STR-STARTDATE sy-vline 
WA_IALERTRISK_STR-ENDDATE sy-vline 
WA_IALERTRISK_STR-CUSTOMER sy-vline 
WA_IALERTRISK_STR-MASTERPROJECTORGANIZATION sy-vline 
WA_IALERTRISK_STR-MASTERPROJECTISCONFIDENTIAL sy-vline 
WA_IALERTRISK_STR-COUNTRY sy-vline 
WA_IALERTRISK_STR-REGION sy-vline 
WA_IALERTRISK_STR-WORKTYPE sy-vline 
WA_IALERTRISK_STR-INDUSTRY sy-vline 
WA_IALERTRISK_STR-PROJECTRISK sy-vline 
WA_IALERTRISK_STR-FINANCIALRISK sy-vline 
WA_IALERTRISK_STR-TECHNICALRISK sy-vline 
WA_IALERTRISK_STR-OVERALLRISK sy-vline 
WA_IALERTRISK_STR-MASTERPROJECTALERT sy-vline 
WA_IALERTRISK_STR-MSTRPROJALERTVALUE sy-vline 
WA_IALERTRISK_STR-UNITOFMEASURE sy-vline      INTO ld_text SEPARATED BY SPACE.

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