ABAP Select data from SAP table IPOCONRULE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPOCONRULE
*  INTO TABLE @DATA(IT_IPOCONRULE2).
*--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_IPOCONRULE INDEX 1 INTO DATA(WA_IPOCONRULE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPOCONRULE>-MANDT = 1.
<IPOCONRULE>-POCNSLDTNRULEUUID = 1.
<IPOCONRULE>-POCNSLDTNRULE = 1.
<IPOCONRULE>-POCNSLDTNRULEDESC = 1.
<IPOCONRULE>-HDRDATECHECK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPOCONRULE-ITEMDATECHECK, sy-vline,
  WA_IPOCONRULE-CREATEDBYUSER, sy-vline,
  WA_IPOCONRULE-CREATIONDATETIME, sy-vline,
  WA_IPOCONRULE-LASTCHANGEDBYUSER, sy-vline,
  WA_IPOCONRULE-LASTCHANGEDATETIME, sy-vline,
  WA_IPOCONRULE-DRAFTLASTCHANGEDDATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPOCONRULE 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_IPOCONRULE 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_IPOCONRULE INTO WA_IPOCONRULE.


*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_IPOCONRULE_STR, 
MANDT TYPE STRING,
POCNSLDTNRULEUUID TYPE STRING,
POCNSLDTNRULE TYPE STRING,
POCNSLDTNRULEDESC TYPE STRING,
HDRDATECHECK TYPE STRING,
ITEMDATECHECK TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
DRAFTLASTCHANGEDDATETIME TYPE STRING,
RFMISSEASONCHECKRQD TYPE STRING,
RFMISSEASONCOPYRQD TYPE STRING,
RFMISSEGMENTCHECKRQD TYPE STRING,
RFMISSEGMENTCOPYRQD TYPE STRING,
RFMISDIVERSIONCHECKRQD TYPE STRING,
RFMISDIVERSIONCOPYRQD TYPE STRING,
RFMISINCOTERMSCHECKRQD TYPE STRING,
RFMISINCOTERMSCOPYRQD TYPE STRING,
RFMISFLLWONDOCCHECKRQD TYPE STRING,
RFMISSHIPGNOTIFCHECKRQD TYPE STRING,
RFMISMLTPLPOITMSALLWD TYPE STRING,
RFMMINQTYFORCNSLDTN TYPE STRING,
RFMMAXQTYFORCNSLDTN TYPE STRING,
RFMMAXDELIVDTEDIFFINDAYS TYPE STRING,
RFMMINQTYVIOLATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPOCONRULE_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_IPOCONRULE_STR-MANDT sy-vline 
WA_IPOCONRULE_STR-POCNSLDTNRULEUUID sy-vline 
WA_IPOCONRULE_STR-POCNSLDTNRULE sy-vline 
WA_IPOCONRULE_STR-POCNSLDTNRULEDESC sy-vline 
WA_IPOCONRULE_STR-HDRDATECHECK sy-vline 
WA_IPOCONRULE_STR-ITEMDATECHECK sy-vline 
WA_IPOCONRULE_STR-CREATEDBYUSER sy-vline 
WA_IPOCONRULE_STR-CREATIONDATETIME sy-vline 
WA_IPOCONRULE_STR-LASTCHANGEDBYUSER sy-vline 
WA_IPOCONRULE_STR-LASTCHANGEDATETIME sy-vline 
WA_IPOCONRULE_STR-DRAFTLASTCHANGEDDATETIME sy-vline 
WA_IPOCONRULE_STR-RFMISSEASONCHECKRQD sy-vline 
WA_IPOCONRULE_STR-RFMISSEASONCOPYRQD sy-vline 
WA_IPOCONRULE_STR-RFMISSEGMENTCHECKRQD sy-vline 
WA_IPOCONRULE_STR-RFMISSEGMENTCOPYRQD sy-vline 
WA_IPOCONRULE_STR-RFMISDIVERSIONCHECKRQD sy-vline 
WA_IPOCONRULE_STR-RFMISDIVERSIONCOPYRQD sy-vline 
WA_IPOCONRULE_STR-RFMISINCOTERMSCHECKRQD sy-vline 
WA_IPOCONRULE_STR-RFMISINCOTERMSCOPYRQD sy-vline 
WA_IPOCONRULE_STR-RFMISFLLWONDOCCHECKRQD sy-vline 
WA_IPOCONRULE_STR-RFMISSHIPGNOTIFCHECKRQD sy-vline 
WA_IPOCONRULE_STR-RFMISMLTPLPOITMSALLWD sy-vline 
WA_IPOCONRULE_STR-RFMMINQTYFORCNSLDTN sy-vline 
WA_IPOCONRULE_STR-RFMMAXQTYFORCNSLDTN sy-vline 
WA_IPOCONRULE_STR-RFMMAXDELIVDTEDIFFINDAYS sy-vline 
WA_IPOCONRULE_STR-RFMMINQTYVIOLATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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