ABAP Select data from SAP table IMPACTIVITYROOT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMPACTIVITYROOT
*  INTO TABLE @DATA(IT_IMPACTIVITYROOT2).
*--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_IMPACTIVITYROOT INDEX 1 INTO DATA(WA_IMPACTIVITYROOT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMPACTIVITYROOT>-MANDT = 1.
<IMPACTIVITYROOT>-ACTIVITYUUID = 1.
<IMPACTIVITYROOT>-MSTRPROJACTIVITYID = 1.
<IMPACTIVITYROOT>-ORIGINAPPLICATION = 1.
<IMPACTIVITYROOT>-ACTIVITYTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMPACTIVITYROOT-MSTRPROJACTIVITYCATEGORY, sy-vline,
  WA_IMPACTIVITYROOT-CHECKLISTITEM, sy-vline,
  WA_IMPACTIVITYROOT-MSTRPROJMLSTNOBJID, sy-vline,
  WA_IMPACTIVITYROOT-PRODUCTID, sy-vline,
  WA_IMPACTIVITYROOT-BUSINESSOBJECT, sy-vline,
  WA_IMPACTIVITYROOT-OBJECTSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMPACTIVITYROOT 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_IMPACTIVITYROOT 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_IMPACTIVITYROOT INTO WA_IMPACTIVITYROOT.


*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 MSTRPROJACTIVITYID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMPACTIVITYROOT-MSTRPROJACTIVITYID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMPACTIVITYROOT-MSTRPROJACTIVITYID.
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_IMPACTIVITYROOT_STR, 
MANDT TYPE STRING,
ACTIVITYUUID TYPE STRING,
MSTRPROJACTIVITYID TYPE STRING,
ORIGINAPPLICATION TYPE STRING,
ACTIVITYTYPE TYPE STRING,
MSTRPROJACTIVITYCATEGORY TYPE STRING,
CHECKLISTITEM TYPE STRING,
MSTRPROJMLSTNOBJID TYPE STRING,
PRODUCTID TYPE STRING,
BUSINESSOBJECT TYPE STRING,
OBJECTSTATUS TYPE STRING,
MSTRPROJRISKSTATUS TYPE STRING,
STATUSCODE TYPE STRING,
CONDITIONISMANDATORY TYPE STRING,
ISPROPOSAL TYPE STRING,
CHANGEDONDATETIME TYPE STRING,
CREATIONDATETIME TYPE STRING,
MSTRPROJCHKLSTPRIOCODE TYPE STRING,
MSTRPROJCHKLSTRSNCODE TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMPACTIVITYROOT_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_IMPACTIVITYROOT_STR-MANDT sy-vline 
WA_IMPACTIVITYROOT_STR-ACTIVITYUUID sy-vline 
WA_IMPACTIVITYROOT_STR-MSTRPROJACTIVITYID sy-vline 
WA_IMPACTIVITYROOT_STR-ORIGINAPPLICATION sy-vline 
WA_IMPACTIVITYROOT_STR-ACTIVITYTYPE sy-vline 
WA_IMPACTIVITYROOT_STR-MSTRPROJACTIVITYCATEGORY sy-vline 
WA_IMPACTIVITYROOT_STR-CHECKLISTITEM sy-vline 
WA_IMPACTIVITYROOT_STR-MSTRPROJMLSTNOBJID sy-vline 
WA_IMPACTIVITYROOT_STR-PRODUCTID sy-vline 
WA_IMPACTIVITYROOT_STR-BUSINESSOBJECT sy-vline 
WA_IMPACTIVITYROOT_STR-OBJECTSTATUS sy-vline 
WA_IMPACTIVITYROOT_STR-MSTRPROJRISKSTATUS sy-vline 
WA_IMPACTIVITYROOT_STR-STATUSCODE sy-vline 
WA_IMPACTIVITYROOT_STR-CONDITIONISMANDATORY sy-vline 
WA_IMPACTIVITYROOT_STR-ISPROPOSAL sy-vline 
WA_IMPACTIVITYROOT_STR-CHANGEDONDATETIME sy-vline 
WA_IMPACTIVITYROOT_STR-CREATIONDATETIME sy-vline 
WA_IMPACTIVITYROOT_STR-MSTRPROJCHKLSTPRIOCODE sy-vline 
WA_IMPACTIVITYROOT_STR-MSTRPROJCHKLSTRSNCODE sy-vline 
WA_IMPACTIVITYROOT_STR-CREATEDBYUSER sy-vline 
WA_IMPACTIVITYROOT_STR-LASTCHANGEDBYUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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