ABAP Select data from SAP table J_3RTAX21_DMEE_HEADER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3RTAX21_DMEE_HEADER 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 J_3RTAX21_DMEE_HEADER. 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 J_3RTAX21_DMEE_HEADER 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_J_3RTAX21_DMEE_HEADER TYPE STANDARD TABLE OF J_3RTAX21_DMEE_HEADER,
      WA_J_3RTAX21_DMEE_HEADER TYPE J_3RTAX21_DMEE_HEADER,
      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: <J_3RTAX21_DMEE_HEADER> TYPE J_3RTAX21_DMEE_HEADER.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3RTAX21_DMEE_HEADER.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3RTAX21_DMEE_HEADER
  INTO TABLE IT_J_3RTAX21_DMEE_HEADER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3RTAX21_DMEE_HEADER
*  INTO TABLE @DATA(IT_J_3RTAX21_DMEE_HEADER2).
*--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_J_3RTAX21_DMEE_HEADER INDEX 1 INTO DATA(WA_J_3RTAX21_DMEE_HEADER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3RTAX21_DMEE_HEADER ASSIGNING <J_3RTAX21_DMEE_HEADER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3RTAX21_DMEE_HEADER>-SENDER_INN = 1.
<J_3RTAX21_DMEE_HEADER>-SENDER_KPP = 1.
<J_3RTAX21_DMEE_HEADER>-TAX_AUTHORITY_CODE = 1.
<J_3RTAX21_DMEE_HEADER>-SENDER_NAME = 1.
<J_3RTAX21_DMEE_HEADER>-SENDER_PHONE = 1.

ENDLOOP.

LOOP AT IT_J_3RTAX21_DMEE_HEADER INTO WA_J_3RTAX21_DMEE_HEADER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3RTAX21_DMEE_HEADER-SENDER_EMAIL, sy-vline,
  WA_J_3RTAX21_DMEE_HEADER-SENDER_OCCUPATION, sy-vline,
  WA_J_3RTAX21_DMEE_HEADER-SENDER_FULLNAME, sy-vline,
  WA_J_3RTAX21_DMEE_HEADER-CEO_FULLNAME, sy-vline,
  WA_J_3RTAX21_DMEE_HEADER-REPRESENTATIVE, sy-vline,
  WA_J_3RTAX21_DMEE_HEADER-AUTHORITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3RTAX21_DMEE_HEADER 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_J_3RTAX21_DMEE_HEADER 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_J_3RTAX21_DMEE_HEADER INTO WA_J_3RTAX21_DMEE_HEADER.


*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 AC132, internal->external for field TAX_ACCRUED
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RTAX21_DMEE_HEADER-TAX_ACCRUED
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RTAX21_DMEE_HEADER-TAX_ACCRUED.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field TAX_CLAIMED
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RTAX21_DMEE_HEADER-TAX_CLAIMED
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RTAX21_DMEE_HEADER-TAX_CLAIMED.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field TOTAL_TAX
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RTAX21_DMEE_HEADER-TOTAL_TAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RTAX21_DMEE_HEADER-TOTAL_TAX.
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_J_3RTAX21_DMEE_HEADER_STR, 
SENDER_INN TYPE STRING,
SENDER_KPP TYPE STRING,
TAX_AUTHORITY_CODE TYPE STRING,
SENDER_NAME TYPE STRING,
SENDER_PHONE TYPE STRING,
SENDER_EMAIL TYPE STRING,
SENDER_OCCUPATION TYPE STRING,
SENDER_FULLNAME TYPE STRING,
CEO_FULLNAME TYPE STRING,
REPRESENTATIVE TYPE STRING,
AUTHORITY TYPE STRING,
DOCUMENT_NUMBER TYPE STRING,
DOCUMENT_TYPE TYPE STRING,
CORRECTION_NUMBER TYPE STRING,
FISCAL_PERIOD_TYPE TYPE STRING,
FISCAL_PERIOD_NUMBER TYPE STRING,
FISCAL_YEAR TYPE STRING,
RECORD_NUMBER TYPE STRING,
OKATO TYPE STRING,
KBK TYPE STRING,
OKVED TYPE STRING,
TAX_ACCRUED TYPE STRING,
TAX_CLAIMED TYPE STRING,
IDFILE TYPE STRING,
DOCDATE TYPE STRING,
SIGN_TYPE TYPE STRING,
LNAME_SIGN TYPE STRING,
FNAME_SIGN TYPE STRING,
PNAME_SIGN TYPE STRING,
TOTAL_TAX TYPE STRING,
SENDER_INN_CHAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3RTAX21_DMEE_HEADER_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_J_3RTAX21_DMEE_HEADER_STR-SENDER_INN sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-SENDER_KPP sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-TAX_AUTHORITY_CODE sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-SENDER_NAME sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-SENDER_PHONE sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-SENDER_EMAIL sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-SENDER_OCCUPATION sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-SENDER_FULLNAME sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-CEO_FULLNAME sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-REPRESENTATIVE sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-AUTHORITY sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-DOCUMENT_NUMBER sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-DOCUMENT_TYPE sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-CORRECTION_NUMBER sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-FISCAL_PERIOD_TYPE sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-FISCAL_PERIOD_NUMBER sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-FISCAL_YEAR sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-RECORD_NUMBER sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-OKATO sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-KBK sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-OKVED sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-TAX_ACCRUED sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-TAX_CLAIMED sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-IDFILE sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-DOCDATE sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-SIGN_TYPE sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-LNAME_SIGN sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-FNAME_SIGN sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-PNAME_SIGN sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-TOTAL_TAX sy-vline 
WA_J_3RTAX21_DMEE_HEADER_STR-SENDER_INN_CHAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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