ABAP Select data from SAP table REXCITCADAST_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCITCADAST_S
*  INTO TABLE @DATA(IT_REXCITCADAST_S2).
*--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_REXCITCADAST_S INDEX 1 INTO DATA(WA_REXCITCADAST_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCITCADAST_S>-MANDT = 1.
<REXCITCADAST_S>-INTRENO = 1.
<REXCITCADAST_S>-CITYCODE = 1.
<REXCITCADAST_S>-ADMINDIVISION = 1.
<REXCITCADAST_S>-CENSUSDIVISION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCITCADAST_S-CITYDIVISION, sy-vline,
  WA_REXCITCADAST_S-SHEET, sy-vline,
  WA_REXCITCADAST_S-PARCEL, sy-vline,
  WA_REXCITCADAST_S-QUALITY, sy-vline,
  WA_REXCITCADAST_S-DENOMINATOR, sy-vline,
  WA_REXCITCADAST_S-SUBALTERN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCITCADAST_S 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_REXCITCADAST_S 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_REXCITCADAST_S INTO WA_REXCITCADAST_S.


*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_REXCITCADAST_S_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
CITYCODE TYPE STRING,
ADMINDIVISION TYPE STRING,
CENSUSDIVISION TYPE STRING,
CITYDIVISION TYPE STRING,
SHEET TYPE STRING,
PARCEL TYPE STRING,
QUALITY TYPE STRING,
DENOMINATOR TYPE STRING,
SUBALTERN TYPE STRING,
CLASS TYPE STRING,
UIUOBJNR TYPE STRING,
UIUINTRENO TYPE STRING,
ORIGAOID TYPE STRING,
DERIVAOID 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,
XCITY TYPE STRING,
UIUXIDENT TYPE STRING,
AOTYPE TYPE STRING,
AOID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCITCADAST_S_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_REXCITCADAST_S_STR-MANDT sy-vline 
WA_REXCITCADAST_S_STR-INTRENO sy-vline 
WA_REXCITCADAST_S_STR-CITYCODE sy-vline 
WA_REXCITCADAST_S_STR-ADMINDIVISION sy-vline 
WA_REXCITCADAST_S_STR-CENSUSDIVISION sy-vline 
WA_REXCITCADAST_S_STR-CITYDIVISION sy-vline 
WA_REXCITCADAST_S_STR-SHEET sy-vline 
WA_REXCITCADAST_S_STR-PARCEL sy-vline 
WA_REXCITCADAST_S_STR-QUALITY sy-vline 
WA_REXCITCADAST_S_STR-DENOMINATOR sy-vline 
WA_REXCITCADAST_S_STR-SUBALTERN sy-vline 
WA_REXCITCADAST_S_STR-CLASS sy-vline 
WA_REXCITCADAST_S_STR-UIUOBJNR sy-vline 
WA_REXCITCADAST_S_STR-UIUINTRENO sy-vline 
WA_REXCITCADAST_S_STR-ORIGAOID sy-vline 
WA_REXCITCADAST_S_STR-DERIVAOID sy-vline 
WA_REXCITCADAST_S_STR-RERF sy-vline 
WA_REXCITCADAST_S_STR-DERF sy-vline 
WA_REXCITCADAST_S_STR-TERF sy-vline 
WA_REXCITCADAST_S_STR-REHER sy-vline 
WA_REXCITCADAST_S_STR-RBEAR sy-vline 
WA_REXCITCADAST_S_STR-DBEAR sy-vline 
WA_REXCITCADAST_S_STR-TBEAR sy-vline 
WA_REXCITCADAST_S_STR-RBHER sy-vline 
WA_REXCITCADAST_S_STR-XCITY sy-vline 
WA_REXCITCADAST_S_STR-UIUXIDENT sy-vline 
WA_REXCITCADAST_S_STR-AOTYPE sy-vline 
WA_REXCITCADAST_S_STR-AOID sy-vline      INTO ld_text SEPARATED BY SPACE.

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