ABAP Select data from SAP table REIT_TAX_CORR_BASE_CREATE_L into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REIT_TAX_CORR_BASE_CREATE_L
*  INTO TABLE @DATA(IT_REIT_TAX_CORR_BASE_CREATE_L2).
*--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_REIT_TAX_CORR_BASE_CREATE_L INDEX 1 INTO DATA(WA_REIT_TAX_CORR_BASE_CREATE_L2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REIT_TAX_CORR_BASE_CREATE_L>-MANDT = 1.
<REIT_TAX_CORR_BASE_CREATE_L>-BASEGUID = 1.
<REIT_TAX_CORR_BASE_CREATE_L>-INTRENO = 1.
<REIT_TAX_CORR_BASE_CREATE_L>-TAXCODE = 1.
<REIT_TAX_CORR_BASE_CREATE_L>-BASETYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REIT_TAX_CORR_BASE_CREATE_L-NETAMOUNT, sy-vline,
  WA_REIT_TAX_CORR_BASE_CREATE_L-TAXAMOUNT, sy-vline,
  WA_REIT_TAX_CORR_BASE_CREATE_L-DEDTAXAMT, sy-vline,
  WA_REIT_TAX_CORR_BASE_CREATE_L-NONDEDTAXAMT, sy-vline,
  WA_REIT_TAX_CORR_BASE_CREATE_L-CURRENCY, sy-vline,
  WA_REIT_TAX_CORR_BASE_CREATE_L-RETIREOPTRATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REIT_TAX_CORR_BASE_CREATE_L 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_REIT_TAX_CORR_BASE_CREATE_L 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_REIT_TAX_CORR_BASE_CREATE_L INTO WA_REIT_TAX_CORR_BASE_CREATE_L.


*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 VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_REIT_TAX_CORR_BASE_CREATE_L-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIT_TAX_CORR_BASE_CREATE_L-VALIDTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REIT_TAX_CORR_BASE_CREATE_L-TCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REIT_TAX_CORR_BASE_CREATE_L-TCNO.
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_REIT_TAX_CORR_BASE_CREATE_L_STR, 
MANDT TYPE STRING,
BASEGUID TYPE STRING,
INTRENO TYPE STRING,
TAXCODE TYPE STRING,
BASETYPE TYPE STRING,
NETAMOUNT TYPE STRING,
TAXAMOUNT TYPE STRING,
DEDTAXAMT TYPE STRING,
NONDEDTAXAMT TYPE STRING,
CURRENCY TYPE STRING,
RETIREOPTRATE TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO 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,
REFGUID TYPE STRING,
XTCBASE TYPE STRING,
XBASETYPE TYPE STRING,
DISTOPTRATE TYPE STRING,
GROSSAMOUNT TYPE STRING,
RECISVALIDFROM TYPE STRING,
RECISVALIDTO TYPE STRING,
BUKRS TYPE STRING,
TCNO TYPE STRING,
IDENT TYPE STRING,
XTC TYPE STRING,
ICON_DETAIL TYPE STRING,
ICON_STATUS TYPE STRING,
ADJFACTOR TYPE STRING,
BUTTONCALCICON TYPE STRING,
ERRORICON TYPE STRING,
CELLTAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REIT_TAX_CORR_BASE_CREATE_L_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_REIT_TAX_CORR_BASE_CREATE_L_STR-MANDT sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-BASEGUID sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-INTRENO sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-TAXCODE sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-BASETYPE sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-NETAMOUNT sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-TAXAMOUNT sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-DEDTAXAMT sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-NONDEDTAXAMT sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-CURRENCY sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-RETIREOPTRATE sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-VALIDFROM sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-VALIDTO sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-RERF sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-DERF sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-TERF sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-REHER sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-RBEAR sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-DBEAR sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-TBEAR sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-RBHER sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-REFGUID sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-XTCBASE sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-XBASETYPE sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-DISTOPTRATE sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-GROSSAMOUNT sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-RECISVALIDFROM sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-RECISVALIDTO sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-BUKRS sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-TCNO sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-IDENT sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-XTC sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-ICON_DETAIL sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-ICON_STATUS sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-ADJFACTOR sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-BUTTONCALCICON sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-ERRORICON sy-vline 
WA_REIT_TAX_CORR_BASE_CREATE_L_STR-CELLTAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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