ABAP Select data from SAP table IRENTRULDLIND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IRENTRULDLIND
*  INTO TABLE @DATA(IT_IRENTRULDLIND2).
*--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_IRENTRULDLIND INDEX 1 INTO DATA(WA_IRENTRULDLIND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IRENTRULDLIND>-MANDT = 1.
<IRENTRULDLIND>-INTERNALREALESTATENUMBER = 1.
<IRENTRULDLIND>-RETERMTYPE = 1.
<IRENTRULDLIND>-RETERMNUMBER = 1.
<IRENTRULDLIND>-RENOTICERULE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IRENTRULDLIND-RENOTICESEQUENCENO, sy-vline,
  WA_IRENTRULDLIND-RETERMPERIODINYEARS, sy-vline,
  WA_IRENTRULDLIND-RETERMPERIODINMONTHS, sy-vline,
  WA_IRENTRULDLIND-RETERMPERIODINDAYS, sy-vline,
  WA_IRENTRULDLIND-RENOTICEYEAR, sy-vline,
  WA_IRENTRULDLIND-RENOTICEMONTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IRENTRULDLIND 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_IRENTRULDLIND 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_IRENTRULDLIND INTO WA_IRENTRULDLIND.


*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 RETERMNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IRENTRULDLIND-RETERMNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRENTRULDLIND-RETERMNUMBER.
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_IRENTRULDLIND_STR, 
MANDT TYPE STRING,
INTERNALREALESTATENUMBER TYPE STRING,
RETERMTYPE TYPE STRING,
RETERMNUMBER TYPE STRING,
RENOTICERULE TYPE STRING,
RENOTICESEQUENCENO TYPE STRING,
RETERMPERIODINYEARS TYPE STRING,
RETERMPERIODINMONTHS TYPE STRING,
RETERMPERIODINDAYS TYPE STRING,
RENOTICEYEAR TYPE STRING,
RENOTICEMONTH TYPE STRING,
RENOTICEDAY TYPE STRING,
RENOTICERECEIPTYEAR TYPE STRING,
RENOTICERECEIPTMONTH TYPE STRING,
RENOTICERECEIPTDAY TYPE STRING,
RENOTICERCPTCALORWORKDAYS TYPE STRING,
RENOTICERECEIPTCALENDAR TYPE STRING,
RENOTICETYPE TYPE STRING,
RENOTICERULETYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IRENTRULDLIND_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_IRENTRULDLIND_STR-MANDT sy-vline 
WA_IRENTRULDLIND_STR-INTERNALREALESTATENUMBER sy-vline 
WA_IRENTRULDLIND_STR-RETERMTYPE sy-vline 
WA_IRENTRULDLIND_STR-RETERMNUMBER sy-vline 
WA_IRENTRULDLIND_STR-RENOTICERULE sy-vline 
WA_IRENTRULDLIND_STR-RENOTICESEQUENCENO sy-vline 
WA_IRENTRULDLIND_STR-RETERMPERIODINYEARS sy-vline 
WA_IRENTRULDLIND_STR-RETERMPERIODINMONTHS sy-vline 
WA_IRENTRULDLIND_STR-RETERMPERIODINDAYS sy-vline 
WA_IRENTRULDLIND_STR-RENOTICEYEAR sy-vline 
WA_IRENTRULDLIND_STR-RENOTICEMONTH sy-vline 
WA_IRENTRULDLIND_STR-RENOTICEDAY sy-vline 
WA_IRENTRULDLIND_STR-RENOTICERECEIPTYEAR sy-vline 
WA_IRENTRULDLIND_STR-RENOTICERECEIPTMONTH sy-vline 
WA_IRENTRULDLIND_STR-RENOTICERECEIPTDAY sy-vline 
WA_IRENTRULDLIND_STR-RENOTICERCPTCALORWORKDAYS sy-vline 
WA_IRENTRULDLIND_STR-RENOTICERECEIPTCALENDAR sy-vline 
WA_IRENTRULDLIND_STR-RENOTICETYPE sy-vline 
WA_IRENTRULDLIND_STR-RENOTICERULETYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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