ABAP Select data from SAP table IMPACTUALS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMPACTUALS
*  INTO TABLE @DATA(IT_IMPACTUALS2).
*--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_IMPACTUALS INDEX 1 INTO DATA(WA_IMPACTUALS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMPACTUALS>-MANDT = 1.
<IMPACTUALS>-MASTERPROJECTUUID = 1.
<IMPACTUALS>-MASTERPROJECT = 1.
<IMPACTUALS>-COMPANYCODECURRENCY = 1.
<IMPACTUALS>-TRANSACTIONCURRENCY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMPACTUALS-CONTROLLINGOBJECTCURRENCY, sy-vline,
  WA_IMPACTUALS-ACTUALCOSTAMOUNT, sy-vline,
  WA_IMPACTUALS-ACTUALREVENUEAMOUNT, sy-vline,
  WA_IMPACTUALS-ACTUALCOSTINOBJECTCRCY, sy-vline,
  WA_IMPACTUALS-ACTUALREVENUEINOBJECTCRCY, sy-vline,
  WA_IMPACTUALS-ACTUALCOSTINTRANSCRCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMPACTUALS 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_IMPACTUALS 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_IMPACTUALS INTO WA_IMPACTUALS.


*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_IMPACTUALS_STR, 
MANDT TYPE STRING,
MASTERPROJECTUUID TYPE STRING,
MASTERPROJECT TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CONTROLLINGOBJECTCURRENCY TYPE STRING,
ACTUALCOSTAMOUNT TYPE STRING,
ACTUALREVENUEAMOUNT TYPE STRING,
ACTUALCOSTINOBJECTCRCY TYPE STRING,
ACTUALREVENUEINOBJECTCRCY TYPE STRING,
ACTUALCOSTINTRANSCRCY TYPE STRING,
ACTUALREVENUEINTRANSCRCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMPACTUALS_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_IMPACTUALS_STR-MANDT sy-vline 
WA_IMPACTUALS_STR-MASTERPROJECTUUID sy-vline 
WA_IMPACTUALS_STR-MASTERPROJECT sy-vline 
WA_IMPACTUALS_STR-COMPANYCODECURRENCY sy-vline 
WA_IMPACTUALS_STR-TRANSACTIONCURRENCY sy-vline 
WA_IMPACTUALS_STR-CONTROLLINGOBJECTCURRENCY sy-vline 
WA_IMPACTUALS_STR-ACTUALCOSTAMOUNT sy-vline 
WA_IMPACTUALS_STR-ACTUALREVENUEAMOUNT sy-vline 
WA_IMPACTUALS_STR-ACTUALCOSTINOBJECTCRCY sy-vline 
WA_IMPACTUALS_STR-ACTUALREVENUEINOBJECTCRCY sy-vline 
WA_IMPACTUALS_STR-ACTUALCOSTINTRANSCRCY sy-vline 
WA_IMPACTUALS_STR-ACTUALREVENUEINTRANSCRCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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