ABAP Select data from SAP table RECDC_CALCRULE_EXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECDC_CALCRULE_EXT
*  INTO TABLE @DATA(IT_RECDC_CALCRULE_EXT2).
*--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_RECDC_CALCRULE_EXT INDEX 1 INTO DATA(WA_RECDC_CALCRULE_EXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECDC_CALCRULE_EXT>-MANDT = 1.
<RECDC_CALCRULE_EXT>-CALCRULEEXT = 1.
<RECDC_CALCRULE_EXT>-CALCRULEINT = 1.
<RECDC_CALCRULE_EXT>-CALCRULEPARA1 = 1.
<RECDC_CALCRULE_EXT>-CALCRULEPAMOCU1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECDC_CALCRULE_EXT-CALCRULEPAMOAP1, sy-vline,
  WA_RECDC_CALCRULE_EXT-CALCRULEPARA2, sy-vline,
  WA_RECDC_CALCRULE_EXT-CALCRULEPAMOCU2, sy-vline,
  WA_RECDC_CALCRULE_EXT-CALCRULEPAMOAP2, sy-vline,
  WA_RECDC_CALCRULE_EXT-CALCRULENODIST, sy-vline,
  WA_RECDC_CALCRULE_EXT-DISTRULEEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECDC_CALCRULE_EXT 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_RECDC_CALCRULE_EXT 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_RECDC_CALCRULE_EXT INTO WA_RECDC_CALCRULE_EXT.


*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_RECDC_CALCRULE_EXT_STR, 
MANDT TYPE STRING,
CALCRULEEXT TYPE STRING,
CALCRULEINT TYPE STRING,
CALCRULEPARA1 TYPE STRING,
CALCRULEPAMOCU1 TYPE STRING,
CALCRULEPAMOAP1 TYPE STRING,
CALCRULEPARA2 TYPE STRING,
CALCRULEPAMOCU2 TYPE STRING,
CALCRULEPAMOAP2 TYPE STRING,
CALCRULENODIST TYPE STRING,
DISTRULEEXT TYPE STRING,
CALCRULEMOD TYPE STRING,
ROUNDTYPE TYPE STRING,
ROUNDDECIMAL TYPE STRING,
ROUNDUNIT TYPE STRING,
CAROUNDTYPE TYPE STRING,
CAROUNDDECIMAL TYPE STRING,
CAROUNDUNIT TYPE STRING,
CAROUNDGRNE TYPE STRING,
DISTCOMPLETE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECDC_CALCRULE_EXT_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_RECDC_CALCRULE_EXT_STR-MANDT sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CALCRULEEXT sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CALCRULEINT sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CALCRULEPARA1 sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CALCRULEPAMOCU1 sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CALCRULEPAMOAP1 sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CALCRULEPARA2 sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CALCRULEPAMOCU2 sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CALCRULEPAMOAP2 sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CALCRULENODIST sy-vline 
WA_RECDC_CALCRULE_EXT_STR-DISTRULEEXT sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CALCRULEMOD sy-vline 
WA_RECDC_CALCRULE_EXT_STR-ROUNDTYPE sy-vline 
WA_RECDC_CALCRULE_EXT_STR-ROUNDDECIMAL sy-vline 
WA_RECDC_CALCRULE_EXT_STR-ROUNDUNIT sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CAROUNDTYPE sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CAROUNDDECIMAL sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CAROUNDUNIT sy-vline 
WA_RECDC_CALCRULE_EXT_STR-CAROUNDGRNE sy-vline 
WA_RECDC_CALCRULE_EXT_STR-DISTCOMPLETE sy-vline      INTO ld_text SEPARATED BY SPACE.

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