ABAP Select data from SAP table REEXC_HOUSEBKTTSB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REEXC_HOUSEBKTTSB
*  INTO TABLE @DATA(IT_REEXC_HOUSEBKTTSB2).
*--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_REEXC_HOUSEBKTTSB INDEX 1 INTO DATA(WA_REEXC_HOUSEBKTTSB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REEXC_HOUSEBKTTSB>-MANDT = 1.
<REEXC_HOUSEBKTTSB>-BANKL = 1.
<REEXC_HOUSEBKTTSB>-KTONR = 1.
<REEXC_HOUSEBKTTSB>-VGTYP = 1.
<REEXC_HOUSEBKTTSB>-CURRKEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REEXC_HOUSEBKTTSB-DSART, sy-vline,
  WA_REEXC_HOUSEBKTTSB-XVERD, sy-vline,
  WA_REEXC_HOUSEBKTTSB-BNKKO, sy-vline,
  WA_REEXC_HOUSEBKTTSB-BUKRS, sy-vline,
  WA_REEXC_HOUSEBKTTSB-WORKLIST, sy-vline,
  WA_REEXC_HOUSEBKTTSB-NOCLEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REEXC_HOUSEBKTTSB 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_REEXC_HOUSEBKTTSB 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_REEXC_HOUSEBKTTSB INTO WA_REEXC_HOUSEBKTTSB.


*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 BNKKO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REEXC_HOUSEBKTTSB-BNKKO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REEXC_HOUSEBKTTSB-BNKKO.
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_REEXC_HOUSEBKTTSB_STR, 
MANDT TYPE STRING,
BANKL TYPE STRING,
KTONR TYPE STRING,
VGTYP TYPE STRING,
CURRKEY TYPE STRING,
DSART TYPE STRING,
XVERD TYPE STRING,
BNKKO TYPE STRING,
BUKRS TYPE STRING,
WORKLIST TYPE STRING,
NOCLEAR TYPE STRING,
MANSP TYPE STRING,
ANZTG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REEXC_HOUSEBKTTSB_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_REEXC_HOUSEBKTTSB_STR-MANDT sy-vline 
WA_REEXC_HOUSEBKTTSB_STR-BANKL sy-vline 
WA_REEXC_HOUSEBKTTSB_STR-KTONR sy-vline 
WA_REEXC_HOUSEBKTTSB_STR-VGTYP sy-vline 
WA_REEXC_HOUSEBKTTSB_STR-CURRKEY sy-vline 
WA_REEXC_HOUSEBKTTSB_STR-DSART sy-vline 
WA_REEXC_HOUSEBKTTSB_STR-XVERD sy-vline 
WA_REEXC_HOUSEBKTTSB_STR-BNKKO sy-vline 
WA_REEXC_HOUSEBKTTSB_STR-BUKRS sy-vline 
WA_REEXC_HOUSEBKTTSB_STR-WORKLIST sy-vline 
WA_REEXC_HOUSEBKTTSB_STR-NOCLEAR sy-vline 
WA_REEXC_HOUSEBKTTSB_STR-MANSP sy-vline 
WA_REEXC_HOUSEBKTTSB_STR-ANZTG sy-vline      INTO ld_text SEPARATED BY SPACE.

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