ABAP Select data from SAP table REXCESLEASING into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCESLEASING
*  INTO TABLE @DATA(IT_REXCESLEASING2).
*--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_REXCESLEASING INDEX 1 INTO DATA(WA_REXCESLEASING2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCESLEASING>-REGIST = 1.
<REXCESLEASING>-DECLAR = 1.
<REXCESLEASING>-FISC_YEAR = 1.
<REXCESLEASING>-FISC_EN_NO = 1.
<REXCESLEASING>-FISC_ID_NO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCESLEASING-FISC_ID_N_L, sy-vline,
  WA_REXCESLEASING-NAME_TEN, sy-vline,
  WA_REXCESLEASING-SH_TYPE, sy-vline,
  WA_REXCESLEASING-BLANK1, sy-vline,
  WA_REXCESLEASING-AM_TR, sy-vline,
  WA_REXCESLEASING-LOC_RE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCESLEASING 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_REXCESLEASING 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_REXCESLEASING INTO WA_REXCESLEASING.


*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 GJAHR, internal->external for field FISC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_REXCESLEASING-FISC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCESLEASING-FISC_YEAR.
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_REXCESLEASING_STR, 
REGIST TYPE STRING,
DECLAR TYPE STRING,
FISC_YEAR TYPE STRING,
FISC_EN_NO TYPE STRING,
FISC_ID_NO TYPE STRING,
FISC_ID_N_L TYPE STRING,
NAME_TEN TYPE STRING,
SH_TYPE TYPE STRING,
BLANK1 TYPE STRING,
AM_TR TYPE STRING,
LOC_RE TYPE STRING,
CAD_REF TYPE STRING,
ABB_STR TYPE STRING,
STREET TYPE STRING,
NUM_TYPE TYPE STRING,
ADDR_NO TYPE STRING,
ADDR_CL TYPE STRING,
BLOCK TYPE STRING,
PORTAL TYPE STRING,
STAIRS TYPE STRING,
FLOOR TYPE STRING,
DOOR TYPE STRING,
ADDR_COMP TYPE STRING,
CITY TYPE STRING,
MUNCP TYPE STRING,
MUNCP_CODE TYPE STRING,
PR_CODE TYPE STRING,
ZIPCODE TYPE STRING,
BLANK2 TYPE STRING,
CRLF TYPE STRING,
INTRENO TYPE STRING,
HWBAS TYPE STRING,
HWSTE TYPE STRING,
DMBTR TYPE STRING,
WAERS TYPE STRING,
MWSKZ TYPE STRING,
BUKRS TYPE STRING,
OBJIDENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCESLEASING_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_REXCESLEASING_STR-REGIST sy-vline 
WA_REXCESLEASING_STR-DECLAR sy-vline 
WA_REXCESLEASING_STR-FISC_YEAR sy-vline 
WA_REXCESLEASING_STR-FISC_EN_NO sy-vline 
WA_REXCESLEASING_STR-FISC_ID_NO sy-vline 
WA_REXCESLEASING_STR-FISC_ID_N_L sy-vline 
WA_REXCESLEASING_STR-NAME_TEN sy-vline 
WA_REXCESLEASING_STR-SH_TYPE sy-vline 
WA_REXCESLEASING_STR-BLANK1 sy-vline 
WA_REXCESLEASING_STR-AM_TR sy-vline 
WA_REXCESLEASING_STR-LOC_RE sy-vline 
WA_REXCESLEASING_STR-CAD_REF sy-vline 
WA_REXCESLEASING_STR-ABB_STR sy-vline 
WA_REXCESLEASING_STR-STREET sy-vline 
WA_REXCESLEASING_STR-NUM_TYPE sy-vline 
WA_REXCESLEASING_STR-ADDR_NO sy-vline 
WA_REXCESLEASING_STR-ADDR_CL sy-vline 
WA_REXCESLEASING_STR-BLOCK sy-vline 
WA_REXCESLEASING_STR-PORTAL sy-vline 
WA_REXCESLEASING_STR-STAIRS sy-vline 
WA_REXCESLEASING_STR-FLOOR sy-vline 
WA_REXCESLEASING_STR-DOOR sy-vline 
WA_REXCESLEASING_STR-ADDR_COMP sy-vline 
WA_REXCESLEASING_STR-CITY sy-vline 
WA_REXCESLEASING_STR-MUNCP sy-vline 
WA_REXCESLEASING_STR-MUNCP_CODE sy-vline 
WA_REXCESLEASING_STR-PR_CODE sy-vline 
WA_REXCESLEASING_STR-ZIPCODE sy-vline 
WA_REXCESLEASING_STR-BLANK2 sy-vline 
WA_REXCESLEASING_STR-CRLF sy-vline 
WA_REXCESLEASING_STR-INTRENO sy-vline 
WA_REXCESLEASING_STR-HWBAS sy-vline 
WA_REXCESLEASING_STR-HWSTE sy-vline 
WA_REXCESLEASING_STR-DMBTR sy-vline 
WA_REXCESLEASING_STR-WAERS sy-vline 
WA_REXCESLEASING_STR-MWSKZ sy-vline 
WA_REXCESLEASING_STR-BUKRS sy-vline 
WA_REXCESLEASING_STR-OBJIDENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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