ABAP Select data from SAP table RERA_ACCRUAL_DOC_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RERA_ACCRUAL_DOC_ITEM 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_ACCRUAL_DOC_ITEM. 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_ACCRUAL_DOC_ITEM 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_ACCRUAL_DOC_ITEM TYPE STANDARD TABLE OF RERA_ACCRUAL_DOC_ITEM,
      WA_RERA_ACCRUAL_DOC_ITEM TYPE RERA_ACCRUAL_DOC_ITEM,
      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_ACCRUAL_DOC_ITEM> TYPE RERA_ACCRUAL_DOC_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RERA_ACCRUAL_DOC_ITEM
*  INTO TABLE @DATA(IT_RERA_ACCRUAL_DOC_ITEM2).
*--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_ACCRUAL_DOC_ITEM INDEX 1 INTO DATA(WA_RERA_ACCRUAL_DOC_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RERA_ACCRUAL_DOC_ITEM>-BUKRS = 1.
<RERA_ACCRUAL_DOC_ITEM>-FISCALYEAR = 1.
<RERA_ACCRUAL_DOC_ITEM>-ACROBJ = 1.
<RERA_ACCRUAL_DOC_ITEM>-ACROBJNR = 1.
<RERA_ACCRUAL_DOC_ITEM>-ASSIGNOBJ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RERA_ACCRUAL_DOC_ITEM-ASSIGNOBJNR, sy-vline,
  WA_RERA_ACCRUAL_DOC_ITEM-ACRTYPE, sy-vline,
  WA_RERA_ACCRUAL_DOC_ITEM-ACCRULE, sy-vline,
  WA_RERA_ACCRUAL_DOC_ITEM-CUMACRAMOUNT, sy-vline,
  WA_RERA_ACCRUAL_DOC_ITEM-ACRAMOUNT, sy-vline,
  WA_RERA_ACCRUAL_DOC_ITEM-CURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RERA_ACCRUAL_DOC_ITEM 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_ACCRUAL_DOC_ITEM 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_ACCRUAL_DOC_ITEM INTO WA_RERA_ACCRUAL_DOC_ITEM.


*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 FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RERA_ACCRUAL_DOC_ITEM-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RERA_ACCRUAL_DOC_ITEM-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field REFFLOWREL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RERA_ACCRUAL_DOC_ITEM-REFFLOWREL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RERA_ACCRUAL_DOC_ITEM-REFFLOWREL.
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_ACCRUAL_DOC_ITEM_STR, 
BUKRS TYPE STRING,
FISCALYEAR TYPE STRING,
ACROBJ TYPE STRING,
ACROBJNR TYPE STRING,
ASSIGNOBJ TYPE STRING,
ASSIGNOBJNR TYPE STRING,
ACRTYPE TYPE STRING,
ACCRULE TYPE STRING,
CUMACRAMOUNT TYPE STRING,
ACRAMOUNT TYPE STRING,
CURRENCY TYPE STRING,
ACRTRANSTYPE TYPE STRING,
EFFDATE TYPE STRING,
REFDOCTYPE TYPE STRING,
REFDOCID TYPE STRING,
LOGSYSTEM TYPE STRING,
OBJID TYPE STRING,
SUBID TYPE STRING,
DOCNR TYPE STRING,
ICON_LIGHTS TYPE STRING,
REFGUIDORIGIN TYPE STRING,
REFGUID TYPE STRING,
DBERVON TYPE STRING,
DBERBIS TYPE STRING,
CFSTATUS TYPE STRING,
POSTINGDATE TYPE STRING,
CONDTYPE TYPE STRING,
BOOK_FLOWTYPE TYPE STRING,
REFFLOWREL TYPE STRING,
TAXTYPE TYPE STRING,
TAXGROUP TYPE STRING,
CFREFGUID TYPE STRING,
CFDELETED TYPE STRING,
ACROBJGUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RERA_ACCRUAL_DOC_ITEM_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_ACCRUAL_DOC_ITEM_STR-BUKRS sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-FISCALYEAR sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-ACROBJ sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-ACROBJNR sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-ASSIGNOBJ sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-ASSIGNOBJNR sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-ACRTYPE sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-ACCRULE sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-CUMACRAMOUNT sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-ACRAMOUNT sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-CURRENCY sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-ACRTRANSTYPE sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-EFFDATE sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-REFDOCTYPE sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-REFDOCID sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-LOGSYSTEM sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-OBJID sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-SUBID sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-DOCNR sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-ICON_LIGHTS sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-REFGUIDORIGIN sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-REFGUID sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-DBERVON sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-DBERBIS sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-CFSTATUS sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-POSTINGDATE sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-CONDTYPE sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-BOOK_FLOWTYPE sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-REFFLOWREL sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-TAXTYPE sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-TAXGROUP sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-CFREFGUID sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-CFDELETED sy-vline 
WA_RERA_ACCRUAL_DOC_ITEM_STR-ACROBJGUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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