ABAP Select data from SAP table RERA_PRE_DOC_ITEM_RESC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RERA_PRE_DOC_ITEM_RESC
*  INTO TABLE @DATA(IT_RERA_PRE_DOC_ITEM_RESC2).
*--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_RERA_PRE_DOC_ITEM_RESC INDEX 1 INTO DATA(WA_RERA_PRE_DOC_ITEM_RESC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RERA_PRE_DOC_ITEM_RESC>-DOCGUID = 1.
<RERA_PRE_DOC_ITEM_RESC>-ITEMNO = 1.
<RERA_PRE_DOC_ITEM_RESC>-ACCTYPE = 1.
<RERA_PRE_DOC_ITEM_RESC>-GLACCSYMB = 1.
<RERA_PRE_DOC_ITEM_RESC>-GLACCOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RERA_PRE_DOC_ITEM_RESC-AMOUNT, sy-vline,
  WA_RERA_PRE_DOC_ITEM_RESC-GROSSAMOUNT, sy-vline,
  WA_RERA_PRE_DOC_ITEM_RESC-NETAMOUNT, sy-vline,
  WA_RERA_PRE_DOC_ITEM_RESC-TAXAMOUNT, sy-vline,
  WA_RERA_PRE_DOC_ITEM_RESC-CURRENCY, sy-vline,
  WA_RERA_PRE_DOC_ITEM_RESC-CTLCAMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RERA_PRE_DOC_ITEM_RESC 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_RERA_PRE_DOC_ITEM_RESC 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_RERA_PRE_DOC_ITEM_RESC INTO WA_RERA_PRE_DOC_ITEM_RESC.


*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 PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RERA_PRE_DOC_ITEM_RESC-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RERA_PRE_DOC_ITEM_RESC-PARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONDTYPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RERA_PRE_DOC_ITEM_RESC-CONDTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RERA_PRE_DOC_ITEM_RESC-CONDTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FLOWTYPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RERA_PRE_DOC_ITEM_RESC-FLOWTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RERA_PRE_DOC_ITEM_RESC-FLOWTYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TERMNOPY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RERA_PRE_DOC_ITEM_RESC-TERMNOPY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RERA_PRE_DOC_ITEM_RESC-TERMNOPY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field CTRATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_RERA_PRE_DOC_ITEM_RESC-CTRATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RERA_PRE_DOC_ITEM_RESC-CTRATE.
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_RERA_PRE_DOC_ITEM_RESC_STR, 
DOCGUID TYPE STRING,
ITEMNO TYPE STRING,
ACCTYPE TYPE STRING,
GLACCSYMB TYPE STRING,
GLACCOUNT TYPE STRING,
AMOUNT TYPE STRING,
GROSSAMOUNT TYPE STRING,
NETAMOUNT TYPE STRING,
TAXAMOUNT TYPE STRING,
CURRENCY TYPE STRING,
CTLCAMOUNT TYPE STRING,
CTLCGROSSAMOUNT TYPE STRING,
CTLCNETAMOUNT TYPE STRING,
CTLCTAXAMOUNT TYPE STRING,
CTLCCURRKEY TYPE STRING,
CTFCAMOUNT TYPE STRING,
CTFCGROSSAMOUNT TYPE STRING,
CTFCNETAMOUNT TYPE STRING,
CTFCTAXAMOUNT TYPE STRING,
CTFCCURRKEY TYPE STRING,
BUKRS TYPE STRING,
OBJNR TYPE STRING,
PARTNEROBJNR TYPE STRING,
PARTNER TYPE STRING,
TAXTYPE TYPE STRING,
TAXGROUP TYPE STRING,
TXJCD TYPE STRING,
TAXDATE TYPE STRING,
REFGUIDORIGIN TYPE STRING,
REFGUID TYPE STRING,
REFDATE TYPE STRING,
CONDTYPE TYPE STRING,
FLOWTYPE TYPE STRING,
DCINDICATOR TYPE STRING,
ITEMTXT TYPE STRING,
BLINEDATE TYPE STRING,
TERMNOPY TYPE STRING,
CDSPLITNO TYPE STRING,
CTRULE TYPE STRING,
CTRATE TYPE STRING,
PFROM TYPE STRING,
PTO TYPE STRING,
HASMANUALTAX TYPE STRING,
AMTRANSTYPE TYPE STRING,
PAROBJNR TYPE STRING,
MARKEDFORCLEARING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RERA_PRE_DOC_ITEM_RESC_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_RERA_PRE_DOC_ITEM_RESC_STR-DOCGUID sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-ITEMNO sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-ACCTYPE sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-GLACCSYMB sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-GLACCOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-AMOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-GROSSAMOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-NETAMOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-TAXAMOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CURRENCY sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CTLCAMOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CTLCGROSSAMOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CTLCNETAMOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CTLCTAXAMOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CTLCCURRKEY sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CTFCAMOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CTFCGROSSAMOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CTFCNETAMOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CTFCTAXAMOUNT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CTFCCURRKEY sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-BUKRS sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-OBJNR sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-PARTNEROBJNR sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-PARTNER sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-TAXTYPE sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-TAXGROUP sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-TXJCD sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-TAXDATE sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-REFGUIDORIGIN sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-REFGUID sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-REFDATE sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CONDTYPE sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-FLOWTYPE sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-DCINDICATOR sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-ITEMTXT sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-BLINEDATE sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-TERMNOPY sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CDSPLITNO sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CTRULE sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-CTRATE sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-PFROM sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-PTO sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-HASMANUALTAX sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-AMTRANSTYPE sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-PAROBJNR sy-vline 
WA_RERA_PRE_DOC_ITEM_RESC_STR-MARKEDFORCLEARING sy-vline      INTO ld_text SEPARATED BY SPACE.

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