ABAP Select data from SAP table IFORMULA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFORMULA
*  INTO TABLE @DATA(IT_IFORMULA2).
*--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_IFORMULA INDEX 1 INTO DATA(WA_IFORMULA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFORMULA>-MANDT = 1.
<IFORMULA>-ORIGINSYSTEM = 1.
<IFORMULA>-PRICINGCONDITIONFORMULAKEY = 1.
<IFORMULA>-CONDITIONTYPE = 1.
<IFORMULA>-PRCGCNDNFMLAVALDTYSTRTDATETIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFORMULA-PRCGCNDNFMLACMMDTYQUANTITYUNIT, sy-vline,
  WA_IFORMULA-PRCGCNDNFORMULARATECURRENCY, sy-vline,
  WA_IFORMULA-PRCGCNDNFORMULARATEQUANTITY, sy-vline,
  WA_IFORMULA-PRCGCNDNFORMULARATEQTYUNIT, sy-vline,
  WA_IFORMULA-PRCGCNDNFMLACOMBINATIONROUTINE, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_IFORMULA 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_IFORMULA 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_IFORMULA INTO WA_IFORMULA.


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

*Conversion exit CUNIT, internal->external for field PRCGCNDNFMLACMMDTYQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IFORMULA-PRCGCNDNFMLACMMDTYQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFORMULA-PRCGCNDNFMLACMMDTYQUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PRCGCNDNFORMULARATEQTYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IFORMULA-PRCGCNDNFORMULARATEQTYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFORMULA-PRCGCNDNFORMULARATEQTYUNIT.
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_IFORMULA_STR, 
MANDT TYPE STRING,
ORIGINSYSTEM TYPE STRING,
PRICINGCONDITIONFORMULAKEY TYPE STRING,
CONDITIONTYPE TYPE STRING,
PRCGCNDNFMLAVALDTYSTRTDATETIME TYPE STRING,
PRCGCNDNFMLACMMDTYQUANTITYUNIT TYPE STRING,
PRCGCNDNFORMULARATECURRENCY TYPE STRING,
PRCGCNDNFORMULARATEQUANTITY TYPE STRING,
PRCGCNDNFORMULARATEQTYUNIT TYPE STRING,
PRCGCNDNFMLACOMBINATIONROUTINE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFORMULA_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_IFORMULA_STR-MANDT sy-vline 
WA_IFORMULA_STR-ORIGINSYSTEM sy-vline 
WA_IFORMULA_STR-PRICINGCONDITIONFORMULAKEY sy-vline 
WA_IFORMULA_STR-CONDITIONTYPE sy-vline 
WA_IFORMULA_STR-PRCGCNDNFMLAVALDTYSTRTDATETIME sy-vline 
WA_IFORMULA_STR-PRCGCNDNFMLACMMDTYQUANTITYUNIT sy-vline 
WA_IFORMULA_STR-PRCGCNDNFORMULARATECURRENCY sy-vline 
WA_IFORMULA_STR-PRCGCNDNFORMULARATEQUANTITY sy-vline 
WA_IFORMULA_STR-PRCGCNDNFORMULARATEQTYUNIT sy-vline 
WA_IFORMULA_STR-PRCGCNDNFMLACOMBINATIONROUTINE sy-vline      INTO ld_text SEPARATED BY SPACE.

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