ABAP Select data from SAP table IREVALUATIONRULE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IREVALUATIONRULE
*  INTO TABLE @DATA(IT_IREVALUATIONRULE2).
*--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_IREVALUATIONRULE INDEX 1 INTO DATA(WA_IREVALUATIONRULE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IREVALUATIONRULE>-MANDT = 1.
<IREVALUATIONRULE>-REVALUATIONRULE = 1.
<IREVALUATIONRULE>-ACCOUNTINGPRINCIPLE = 1.
<IREVALUATIONRULE>-REVALUATIONTYPE = 1.
<IREVALUATIONRULE>-REISVALUATIONPERFORMAUTOMATIC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IREVALUATIONRULE-REISVALUATIONCOMPLETEAUTOMATIC, sy-vline,
  WA_IREVALUATIONRULE-REVALUATIONCONDITIONGROUP, sy-vline,
  WA_IREVALUATIONRULE-REVALUATIONLINEARTYPE, sy-vline,
  WA_IREVALUATIONRULE-REFLOWTYPELINEAR, sy-vline,
  WA_IREVALUATIONRULE-REFLOWTYPELINEARNEGATIVE, sy-vline,
  WA_IREVALUATIONRULE-REFLOWTYPEINTEREST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IREVALUATIONRULE 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_IREVALUATIONRULE 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_IREVALUATIONRULE INTO WA_IREVALUATIONRULE.


*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 REFLOWTYPELINEAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IREVALUATIONRULE-REFLOWTYPELINEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREVALUATIONRULE-REFLOWTYPELINEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFLOWTYPELINEARNEGATIVE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IREVALUATIONRULE-REFLOWTYPELINEARNEGATIVE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREVALUATIONRULE-REFLOWTYPELINEARNEGATIVE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFLOWTYPEINTEREST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IREVALUATIONRULE-REFLOWTYPEINTEREST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREVALUATIONRULE-REFLOWTYPEINTEREST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFLOWTYPECLEARING
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IREVALUATIONRULE-REFLOWTYPECLEARING
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREVALUATIONRULE-REFLOWTYPECLEARING.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFLOWTYPEREPAYMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IREVALUATIONRULE-REFLOWTYPEREPAYMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREVALUATIONRULE-REFLOWTYPEREPAYMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFLOWTYPEASSET
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IREVALUATIONRULE-REFLOWTYPEASSET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREVALUATIONRULE-REFLOWTYPEASSET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFLOWTYPEDEPRECIATION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IREVALUATIONRULE-REFLOWTYPEDEPRECIATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREVALUATIONRULE-REFLOWTYPEDEPRECIATION.
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_IREVALUATIONRULE_STR, 
MANDT TYPE STRING,
REVALUATIONRULE TYPE STRING,
ACCOUNTINGPRINCIPLE TYPE STRING,
REVALUATIONTYPE TYPE STRING,
REISVALUATIONPERFORMAUTOMATIC TYPE STRING,
REISVALUATIONCOMPLETEAUTOMATIC TYPE STRING,
REVALUATIONCONDITIONGROUP TYPE STRING,
REVALUATIONLINEARTYPE TYPE STRING,
REFLOWTYPELINEAR TYPE STRING,
REFLOWTYPELINEARNEGATIVE TYPE STRING,
REFLOWTYPEINTEREST TYPE STRING,
REFLOWTYPECLEARING TYPE STRING,
REFLOWTYPEREPAYMENT TYPE STRING,
REFLOWTYPEASSET TYPE STRING,
REFLOWTYPEDEPRECIATION TYPE STRING,
REVALUATIONCLASSIFICATION TYPE STRING,
REISCNDNANDRMNGSHARELINEARIZE TYPE STRING,
REVALUATIONINTEGRATIONTYPE TYPE STRING,
REISEXCLFORNEWASSGMT TYPE STRING,
REISVALUATIONRULEINFORMATIONAL TYPE STRING,
INTERESTCALCULATIONMETHOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IREVALUATIONRULE_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_IREVALUATIONRULE_STR-MANDT sy-vline 
WA_IREVALUATIONRULE_STR-REVALUATIONRULE sy-vline 
WA_IREVALUATIONRULE_STR-ACCOUNTINGPRINCIPLE sy-vline 
WA_IREVALUATIONRULE_STR-REVALUATIONTYPE sy-vline 
WA_IREVALUATIONRULE_STR-REISVALUATIONPERFORMAUTOMATIC sy-vline 
WA_IREVALUATIONRULE_STR-REISVALUATIONCOMPLETEAUTOMATIC sy-vline 
WA_IREVALUATIONRULE_STR-REVALUATIONCONDITIONGROUP sy-vline 
WA_IREVALUATIONRULE_STR-REVALUATIONLINEARTYPE sy-vline 
WA_IREVALUATIONRULE_STR-REFLOWTYPELINEAR sy-vline 
WA_IREVALUATIONRULE_STR-REFLOWTYPELINEARNEGATIVE sy-vline 
WA_IREVALUATIONRULE_STR-REFLOWTYPEINTEREST sy-vline 
WA_IREVALUATIONRULE_STR-REFLOWTYPECLEARING sy-vline 
WA_IREVALUATIONRULE_STR-REFLOWTYPEREPAYMENT sy-vline 
WA_IREVALUATIONRULE_STR-REFLOWTYPEASSET sy-vline 
WA_IREVALUATIONRULE_STR-REFLOWTYPEDEPRECIATION sy-vline 
WA_IREVALUATIONRULE_STR-REVALUATIONCLASSIFICATION sy-vline 
WA_IREVALUATIONRULE_STR-REISCNDNANDRMNGSHARELINEARIZE sy-vline 
WA_IREVALUATIONRULE_STR-REVALUATIONINTEGRATIONTYPE sy-vline 
WA_IREVALUATIONRULE_STR-REISEXCLFORNEWASSGMT sy-vline 
WA_IREVALUATIONRULE_STR-REISVALUATIONRULEINFORMATIONAL sy-vline 
WA_IREVALUATIONRULE_STR-INTERESTCALCULATIONMETHOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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