ABAP Select data from SAP table BAPI_RE_REGISTER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_RE_REGISTER
*  INTO TABLE @DATA(IT_BAPI_RE_REGISTER2).
*--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_BAPI_RE_REGISTER INDEX 1 INTO DATA(WA_BAPI_RE_REGISTER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_RE_REGISTER>-OBJECT_TYPE = 1.
<BAPI_RE_REGISTER>-OBJECT_ID = 1.
<BAPI_RE_REGISTER>-REGISTER_NO = 1.
<BAPI_RE_REGISTER>-REGISTER_SUB_NO = 1.
<BAPI_RE_REGISTER>-COOWN_NUMERATOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_RE_REGISTER-COOWN_DENOMINATOR, sy-vline,
  WA_BAPI_RE_REGISTER-REAL_PROP_REG_NO, sy-vline,
  WA_BAPI_RE_REGISTER-LR_MEAS_VALUE, sy-vline,
  WA_BAPI_RE_REGISTER-UNIT, sy-vline,
  WA_BAPI_RE_REGISTER-UNIT_ISO, sy-vline,
  WA_BAPI_RE_REGISTER-APPLICATION_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_RE_REGISTER 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_BAPI_RE_REGISTER 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_BAPI_RE_REGISTER INTO WA_BAPI_RE_REGISTER.


*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 LRREG, internal->external for field REGISTER_NO
CALL FUNCTION 'CONVERSION_EXIT_LRREG_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_RE_REGISTER-REGISTER_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_RE_REGISTER-REGISTER_NO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit REDAT, internal->external for field CANCEL_DATE
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_RE_REGISTER-CANCEL_DATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_RE_REGISTER-CANCEL_DATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LRPGN, internal->external for field LAND_REGISTER_PAGE_NO
CALL FUNCTION 'CONVERSION_EXIT_LRPGN_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_RE_REGISTER-LAND_REGISTER_PAGE_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_RE_REGISTER-LAND_REGISTER_PAGE_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LRSEC, internal->external for field LLR_SEQUENCE_NO
CALL FUNCTION 'CONVERSION_EXIT_LRSEC_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_RE_REGISTER-LLR_SEQUENCE_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_RE_REGISTER-LLR_SEQUENCE_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_RE_REGISTER-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_RE_REGISTER-PARTNER.
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_BAPI_RE_REGISTER_STR, 
OBJECT_TYPE TYPE STRING,
OBJECT_ID TYPE STRING,
REGISTER_NO TYPE STRING,
REGISTER_SUB_NO TYPE STRING,
COOWN_NUMERATOR TYPE STRING,
COOWN_DENOMINATOR TYPE STRING,
REAL_PROP_REG_NO TYPE STRING,
LR_MEAS_VALUE TYPE STRING,
UNIT TYPE STRING,
UNIT_ISO TYPE STRING,
APPLICATION_DATE TYPE STRING,
ENTRY_DATE TYPE STRING,
CONSENT_DATE TYPE STRING,
CANCEL_DATE TYPE STRING,
COMMENT TYPE STRING,
LAND_REGISTER_DISTRICT TYPE STRING,
LAND_REGISTER_VOLUME_NO TYPE STRING,
LAND_REGISTER_PAGE_NO TYPE STRING,
LLR_SEQUENCE_NO TYPE STRING,
PARTNER TYPE STRING,
LLR_END_DATE TYPE STRING,
LLR_TERM_YEARS TYPE STRING,
IS_RELATED_RIGHT_ENTRY TYPE STRING,
RELATED_RIGHT_END_DATE TYPE STRING,
ENCUMBRANCE_TYPE TYPE STRING,
PARCEL_OBJECT_ID TYPE STRING,
EXISTS_IN_SYSTEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_RE_REGISTER_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_BAPI_RE_REGISTER_STR-OBJECT_TYPE sy-vline 
WA_BAPI_RE_REGISTER_STR-OBJECT_ID sy-vline 
WA_BAPI_RE_REGISTER_STR-REGISTER_NO sy-vline 
WA_BAPI_RE_REGISTER_STR-REGISTER_SUB_NO sy-vline 
WA_BAPI_RE_REGISTER_STR-COOWN_NUMERATOR sy-vline 
WA_BAPI_RE_REGISTER_STR-COOWN_DENOMINATOR sy-vline 
WA_BAPI_RE_REGISTER_STR-REAL_PROP_REG_NO sy-vline 
WA_BAPI_RE_REGISTER_STR-LR_MEAS_VALUE sy-vline 
WA_BAPI_RE_REGISTER_STR-UNIT sy-vline 
WA_BAPI_RE_REGISTER_STR-UNIT_ISO sy-vline 
WA_BAPI_RE_REGISTER_STR-APPLICATION_DATE sy-vline 
WA_BAPI_RE_REGISTER_STR-ENTRY_DATE sy-vline 
WA_BAPI_RE_REGISTER_STR-CONSENT_DATE sy-vline 
WA_BAPI_RE_REGISTER_STR-CANCEL_DATE sy-vline 
WA_BAPI_RE_REGISTER_STR-COMMENT sy-vline 
WA_BAPI_RE_REGISTER_STR-LAND_REGISTER_DISTRICT sy-vline 
WA_BAPI_RE_REGISTER_STR-LAND_REGISTER_VOLUME_NO sy-vline 
WA_BAPI_RE_REGISTER_STR-LAND_REGISTER_PAGE_NO sy-vline 
WA_BAPI_RE_REGISTER_STR-LLR_SEQUENCE_NO sy-vline 
WA_BAPI_RE_REGISTER_STR-PARTNER sy-vline 
WA_BAPI_RE_REGISTER_STR-LLR_END_DATE sy-vline 
WA_BAPI_RE_REGISTER_STR-LLR_TERM_YEARS sy-vline 
WA_BAPI_RE_REGISTER_STR-IS_RELATED_RIGHT_ENTRY sy-vline 
WA_BAPI_RE_REGISTER_STR-RELATED_RIGHT_END_DATE sy-vline 
WA_BAPI_RE_REGISTER_STR-ENCUMBRANCE_TYPE sy-vline 
WA_BAPI_RE_REGISTER_STR-PARCEL_OBJECT_ID sy-vline 
WA_BAPI_RE_REGISTER_STR-EXISTS_IN_SYSTEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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