ABAP Select data from SAP table REXCESM180_REC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REXCESM180_REC 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 REXCESM180_REC. 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 REXCESM180_REC 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_REXCESM180_REC TYPE STANDARD TABLE OF REXCESM180_REC,
      WA_REXCESM180_REC TYPE REXCESM180_REC,
      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: <REXCESM180_REC> TYPE REXCESM180_REC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_REXCESM180_REC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM REXCESM180_REC
  INTO TABLE IT_REXCESM180_REC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCESM180_REC
*  INTO TABLE @DATA(IT_REXCESM180_REC2).
*--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_REXCESM180_REC INDEX 1 INTO DATA(WA_REXCESM180_REC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_REXCESM180_REC ASSIGNING <REXCESM180_REC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCESM180_REC>-REGIST = 1.
<REXCESM180_REC>-DECLAR = 1.
<REXCESM180_REC>-FISC_YEAR = 1.
<REXCESM180_REC>-FISC_ID_DEC = 1.
<REXCESM180_REC>-FISC_ID_REC = 1.

ENDLOOP.

LOOP AT IT_REXCESM180_REC INTO WA_REXCESM180_REC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCESM180_REC-FISC_ID_REP, sy-vline,
  WA_REXCESM180_REC-NAME_REC, sy-vline,
  WA_REXCESM180_REC-PR_CODE, sy-vline,
  WA_REXCESM180_REC-METHOD, sy-vline,
  WA_REXCESM180_REC-SIGN_BAS, sy-vline,
  WA_REXCESM180_REC-AM_BAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCESM180_REC 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_REXCESM180_REC 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_REXCESM180_REC INTO WA_REXCESM180_REC.


*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_REXCESM180_REC-FISC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXCESM180_REC-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_REXCESM180_REC_STR, 
REGIST TYPE STRING,
DECLAR TYPE STRING,
FISC_YEAR TYPE STRING,
FISC_ID_DEC TYPE STRING,
FISC_ID_REC TYPE STRING,
FISC_ID_REP TYPE STRING,
NAME_REC TYPE STRING,
PR_CODE TYPE STRING,
METHOD TYPE STRING,
SIGN_BAS TYPE STRING,
AM_BAS TYPE STRING,
RATE TYPE STRING,
AM_TAX TYPE STRING,
ACCR_YEAR TYPE STRING,
INTRENO 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,
MUNCP TYPE STRING,
CITY TYPE STRING,
MUNCP_CODE TYPE STRING,
PR_CODE_LEAS TYPE STRING,
ZIPCODE TYPE STRING,
BLANK2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCESM180_REC_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_REXCESM180_REC_STR-REGIST sy-vline 
WA_REXCESM180_REC_STR-DECLAR sy-vline 
WA_REXCESM180_REC_STR-FISC_YEAR sy-vline 
WA_REXCESM180_REC_STR-FISC_ID_DEC sy-vline 
WA_REXCESM180_REC_STR-FISC_ID_REC sy-vline 
WA_REXCESM180_REC_STR-FISC_ID_REP sy-vline 
WA_REXCESM180_REC_STR-NAME_REC sy-vline 
WA_REXCESM180_REC_STR-PR_CODE sy-vline 
WA_REXCESM180_REC_STR-METHOD sy-vline 
WA_REXCESM180_REC_STR-SIGN_BAS sy-vline 
WA_REXCESM180_REC_STR-AM_BAS sy-vline 
WA_REXCESM180_REC_STR-RATE sy-vline 
WA_REXCESM180_REC_STR-AM_TAX sy-vline 
WA_REXCESM180_REC_STR-ACCR_YEAR sy-vline 
WA_REXCESM180_REC_STR-INTRENO sy-vline 
WA_REXCESM180_REC_STR-LOC_RE sy-vline 
WA_REXCESM180_REC_STR-CAD_REF sy-vline 
WA_REXCESM180_REC_STR-ABB_STR sy-vline 
WA_REXCESM180_REC_STR-STREET sy-vline 
WA_REXCESM180_REC_STR-NUM_TYPE sy-vline 
WA_REXCESM180_REC_STR-ADDR_NO sy-vline 
WA_REXCESM180_REC_STR-ADDR_CL sy-vline 
WA_REXCESM180_REC_STR-BLOCK sy-vline 
WA_REXCESM180_REC_STR-PORTAL sy-vline 
WA_REXCESM180_REC_STR-STAIRS sy-vline 
WA_REXCESM180_REC_STR-FLOOR sy-vline 
WA_REXCESM180_REC_STR-DOOR sy-vline 
WA_REXCESM180_REC_STR-ADDR_COMP sy-vline 
WA_REXCESM180_REC_STR-MUNCP sy-vline 
WA_REXCESM180_REC_STR-CITY sy-vline 
WA_REXCESM180_REC_STR-MUNCP_CODE sy-vline 
WA_REXCESM180_REC_STR-PR_CODE_LEAS sy-vline 
WA_REXCESM180_REC_STR-ZIPCODE sy-vline 
WA_REXCESM180_REC_STR-BLANK2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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