ABAP Select data from SAP table IRECONTRASSSUBJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IRECONTRASSSUBJ
*  INTO TABLE @DATA(IT_IRECONTRASSSUBJ2).
*--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_IRECONTRASSSUBJ INDEX 1 INTO DATA(WA_IRECONTRASSSUBJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IRECONTRASSSUBJ>-MANDT = 1.
<IRECONTRASSSUBJ>-COMPANYCODE = 1.
<IRECONTRASSSUBJ>-REALESTATECONTRACT = 1.
<IRECONTRASSSUBJ>-INTERNALREALESTATENUMBER = 1.
<IRECONTRASSSUBJ>-OBJECTINTERNALID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IRECONTRASSSUBJ-RESPONSIBLE, sy-vline,
  WA_IRECONTRASSSUBJ-RESPONSIBLEUSERFULLNAME, sy-vline,
  WA_IRECONTRASSSUBJ-RECONTRACTNAME, sy-vline,
  WA_IRECONTRASSSUBJ-CONTRACTSTARTDATE, sy-vline,
  WA_IRECONTRASSSUBJ-CONTRACTENDDATE, sy-vline,
  WA_IRECONTRASSSUBJ-RECONTRACTFIRSTENDDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IRECONTRASSSUBJ 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_IRECONTRASSSUBJ 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_IRECONTRASSSUBJ INTO WA_IRECONTRASSSUBJ.


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

*Conversion exit ALPHA, internal->external for field RECONTRACTNUMBEROLD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IRECONTRASSSUBJ-RECONTRACTNUMBEROLD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRECONTRASSSUBJ-RECONTRACTNUMBEROLD.
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_IRECONTRASSSUBJ_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
REALESTATECONTRACT TYPE STRING,
INTERNALREALESTATENUMBER TYPE STRING,
OBJECTINTERNALID TYPE STRING,
RESPONSIBLE TYPE STRING,
RESPONSIBLEUSERFULLNAME TYPE STRING,
RECONTRACTNAME TYPE STRING,
CONTRACTSTARTDATE TYPE STRING,
CONTRACTENDDATE TYPE STRING,
RECONTRACTFIRSTENDDATE TYPE STRING,
RECONTRACTNUMBEROLD TYPE STRING,
REAUTHORIZATIONGROUP TYPE STRING,
VALUATIONRELEVANCE TYPE STRING,
COMPANYCODENAME TYPE STRING,
RECONTRACTTYPE TYPE STRING,
RECONTRACTTYPENAME TYPE STRING,
OBJECTVALIDFROM TYPE STRING,
OBJECTVALIDTO TYPE STRING,
RECONTRACTSUBJECTNUMBER TYPE STRING,
RECONTRACTSUBJECTDESCRIPTION TYPE STRING,
EXTERNALID TYPE STRING,
RECONTRACTSUBJECTCLASS TYPE STRING,
RECONTRACTSUBJECTCLASSNAME TYPE STRING,
RECONTRACTSUBJECTTYPE TYPE STRING,
RECONTRACTSUBJECTTYPENAME TYPE STRING,
REACCOUNTINGOBJECT TYPE STRING,
REACCOUNTINGOBJECTTYPE TYPE STRING,
REACCOUNTINGOBJECTNAME TYPE STRING,
NUMBEROFRECONTRACTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IRECONTRASSSUBJ_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_IRECONTRASSSUBJ_STR-MANDT sy-vline 
WA_IRECONTRASSSUBJ_STR-COMPANYCODE sy-vline 
WA_IRECONTRASSSUBJ_STR-REALESTATECONTRACT sy-vline 
WA_IRECONTRASSSUBJ_STR-INTERNALREALESTATENUMBER sy-vline 
WA_IRECONTRASSSUBJ_STR-OBJECTINTERNALID sy-vline 
WA_IRECONTRASSSUBJ_STR-RESPONSIBLE sy-vline 
WA_IRECONTRASSSUBJ_STR-RESPONSIBLEUSERFULLNAME sy-vline 
WA_IRECONTRASSSUBJ_STR-RECONTRACTNAME sy-vline 
WA_IRECONTRASSSUBJ_STR-CONTRACTSTARTDATE sy-vline 
WA_IRECONTRASSSUBJ_STR-CONTRACTENDDATE sy-vline 
WA_IRECONTRASSSUBJ_STR-RECONTRACTFIRSTENDDATE sy-vline 
WA_IRECONTRASSSUBJ_STR-RECONTRACTNUMBEROLD sy-vline 
WA_IRECONTRASSSUBJ_STR-REAUTHORIZATIONGROUP sy-vline 
WA_IRECONTRASSSUBJ_STR-VALUATIONRELEVANCE sy-vline 
WA_IRECONTRASSSUBJ_STR-COMPANYCODENAME sy-vline 
WA_IRECONTRASSSUBJ_STR-RECONTRACTTYPE sy-vline 
WA_IRECONTRASSSUBJ_STR-RECONTRACTTYPENAME sy-vline 
WA_IRECONTRASSSUBJ_STR-OBJECTVALIDFROM sy-vline 
WA_IRECONTRASSSUBJ_STR-OBJECTVALIDTO sy-vline 
WA_IRECONTRASSSUBJ_STR-RECONTRACTSUBJECTNUMBER sy-vline 
WA_IRECONTRASSSUBJ_STR-RECONTRACTSUBJECTDESCRIPTION sy-vline 
WA_IRECONTRASSSUBJ_STR-EXTERNALID sy-vline 
WA_IRECONTRASSSUBJ_STR-RECONTRACTSUBJECTCLASS sy-vline 
WA_IRECONTRASSSUBJ_STR-RECONTRACTSUBJECTCLASSNAME sy-vline 
WA_IRECONTRASSSUBJ_STR-RECONTRACTSUBJECTTYPE sy-vline 
WA_IRECONTRASSSUBJ_STR-RECONTRACTSUBJECTTYPENAME sy-vline 
WA_IRECONTRASSSUBJ_STR-REACCOUNTINGOBJECT sy-vline 
WA_IRECONTRASSSUBJ_STR-REACCOUNTINGOBJECTTYPE sy-vline 
WA_IRECONTRASSSUBJ_STR-REACCOUNTINGOBJECTNAME sy-vline 
WA_IRECONTRASSSUBJ_STR-NUMBEROFRECONTRACTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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