ABAP Select data from SAP table REXCITICI_X into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCITICI_X
*  INTO TABLE @DATA(IT_REXCITICI_X2).
*--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_REXCITICI_X INDEX 1 INTO DATA(WA_REXCITICI_X2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCITICI_X>-MANDT = 1.
<REXCITICI_X>-INTRENO = 1.
<REXCITICI_X>-DATEFROM = 1.
<REXCITICI_X>-CURRENCY = 1.
<REXCITICI_X>-DATETO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCITICI_X-ICIAMOUNT, sy-vline,
  WA_REXCITICI_X-POSTALCODE, sy-vline,
  WA_REXCITICI_X-CITY, sy-vline,
  WA_REXCITICI_X-ICIRATE, sy-vline,
  WA_REXCITICI_X-ISMANUALRATE, sy-vline,
  WA_REXCITICI_X-ICICOLLECTOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCITICI_X 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_REXCITICI_X 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_REXCITICI_X INTO WA_REXCITICI_X.


*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 REDAT, internal->external for field DATETO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_REXCITICI_X-DATETO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCITICI_X-DATETO.
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_REXCITICI_X_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
DATEFROM TYPE STRING,
CURRENCY TYPE STRING,
DATETO TYPE STRING,
ICIAMOUNT TYPE STRING,
POSTALCODE TYPE STRING,
CITY TYPE STRING,
ICIRATE TYPE STRING,
ISMANUALRATE TYPE STRING,
ICICOLLECTOR TYPE STRING,
ACCNO TYPE STRING,
CATID TYPE STRING,
CATCOEFF TYPE STRING,
CALCTYPE TYPE STRING,
AOVALUE TYPE STRING,
BASEAMOUNT TYPE STRING,
TAXBASE TYPE STRING,
MONOWN TYPE STRING,
PERCOWN TYPE STRING,
MONEXCL TYPE STRING,
DETRAMOUNT TYPE STRING,
DETRACTPREC TYPE STRING,
RAISPERC TYPE STRING,
ISANNUALPAY TYPE STRING,
DATPRI TYPE STRING,
INSTPRIPAID TYPE STRING,
DOWNPAYMENT TYPE STRING,
DATSEC TYPE STRING,
BALANCE TYPE STRING,
ISACTIVEICI TYPE STRING,
ASSIGINTRENO TYPE STRING,
ASSIGOBJNR TYPE STRING,
BUKRS TYPE STRING,
IS_EXEMPT TYPE STRING,
IS_UNINHABIT TYPE STRING,
IS_HISTORIC TYPE STRING,
COUNTRYRATE TYPE STRING,
CITYRATE TYPE STRING,
DOWNPAYMENTCITY TYPE STRING,
DOWNPAYMENTCNTRY TYPE STRING,
BALANCECITY TYPE STRING,
BALANCECOUNTRY TYPE STRING,
CITYAMOUNT TYPE STRING,
COUNTRYAMOUNT TYPE STRING,
REDUCTION TYPE STRING,
NOIMUCALC TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
XCATID TYPE STRING,
XCALCTYPE TYPE STRING,
STREET TYPE STRING,
ASSIGXIDENT TYPE STRING,
BUTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCITICI_X_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_REXCITICI_X_STR-MANDT sy-vline 
WA_REXCITICI_X_STR-INTRENO sy-vline 
WA_REXCITICI_X_STR-DATEFROM sy-vline 
WA_REXCITICI_X_STR-CURRENCY sy-vline 
WA_REXCITICI_X_STR-DATETO sy-vline 
WA_REXCITICI_X_STR-ICIAMOUNT sy-vline 
WA_REXCITICI_X_STR-POSTALCODE sy-vline 
WA_REXCITICI_X_STR-CITY sy-vline 
WA_REXCITICI_X_STR-ICIRATE sy-vline 
WA_REXCITICI_X_STR-ISMANUALRATE sy-vline 
WA_REXCITICI_X_STR-ICICOLLECTOR sy-vline 
WA_REXCITICI_X_STR-ACCNO sy-vline 
WA_REXCITICI_X_STR-CATID sy-vline 
WA_REXCITICI_X_STR-CATCOEFF sy-vline 
WA_REXCITICI_X_STR-CALCTYPE sy-vline 
WA_REXCITICI_X_STR-AOVALUE sy-vline 
WA_REXCITICI_X_STR-BASEAMOUNT sy-vline 
WA_REXCITICI_X_STR-TAXBASE sy-vline 
WA_REXCITICI_X_STR-MONOWN sy-vline 
WA_REXCITICI_X_STR-PERCOWN sy-vline 
WA_REXCITICI_X_STR-MONEXCL sy-vline 
WA_REXCITICI_X_STR-DETRAMOUNT sy-vline 
WA_REXCITICI_X_STR-DETRACTPREC sy-vline 
WA_REXCITICI_X_STR-RAISPERC sy-vline 
WA_REXCITICI_X_STR-ISANNUALPAY sy-vline 
WA_REXCITICI_X_STR-DATPRI sy-vline 
WA_REXCITICI_X_STR-INSTPRIPAID sy-vline 
WA_REXCITICI_X_STR-DOWNPAYMENT sy-vline 
WA_REXCITICI_X_STR-DATSEC sy-vline 
WA_REXCITICI_X_STR-BALANCE sy-vline 
WA_REXCITICI_X_STR-ISACTIVEICI sy-vline 
WA_REXCITICI_X_STR-ASSIGINTRENO sy-vline 
WA_REXCITICI_X_STR-ASSIGOBJNR sy-vline 
WA_REXCITICI_X_STR-BUKRS sy-vline 
WA_REXCITICI_X_STR-IS_EXEMPT sy-vline 
WA_REXCITICI_X_STR-IS_UNINHABIT sy-vline 
WA_REXCITICI_X_STR-IS_HISTORIC sy-vline 
WA_REXCITICI_X_STR-COUNTRYRATE sy-vline 
WA_REXCITICI_X_STR-CITYRATE sy-vline 
WA_REXCITICI_X_STR-DOWNPAYMENTCITY sy-vline 
WA_REXCITICI_X_STR-DOWNPAYMENTCNTRY sy-vline 
WA_REXCITICI_X_STR-BALANCECITY sy-vline 
WA_REXCITICI_X_STR-BALANCECOUNTRY sy-vline 
WA_REXCITICI_X_STR-CITYAMOUNT sy-vline 
WA_REXCITICI_X_STR-COUNTRYAMOUNT sy-vline 
WA_REXCITICI_X_STR-REDUCTION sy-vline 
WA_REXCITICI_X_STR-NOIMUCALC sy-vline 
WA_REXCITICI_X_STR-RERF sy-vline 
WA_REXCITICI_X_STR-DERF sy-vline 
WA_REXCITICI_X_STR-TERF sy-vline 
WA_REXCITICI_X_STR-REHER sy-vline 
WA_REXCITICI_X_STR-RBEAR sy-vline 
WA_REXCITICI_X_STR-DBEAR sy-vline 
WA_REXCITICI_X_STR-TBEAR sy-vline 
WA_REXCITICI_X_STR-RBHER sy-vline 
WA_REXCITICI_X_STR-XCATID sy-vline 
WA_REXCITICI_X_STR-XCALCTYPE sy-vline 
WA_REXCITICI_X_STR-STREET sy-vline 
WA_REXCITICI_X_STR-ASSIGXIDENT sy-vline 
WA_REXCITICI_X_STR-BUTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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