ABAP Select data from SAP table J_3RTAX21_DMEE_SECTION7 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_SECTION7 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_SECTION7. 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_SECTION7 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_SECTION7 TYPE STANDARD TABLE OF J_3RTAX21_DMEE_SECTION7,
      WA_J_3RTAX21_DMEE_SECTION7 TYPE J_3RTAX21_DMEE_SECTION7,
      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_SECTION7> TYPE J_3RTAX21_DMEE_SECTION7.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3RTAX21_DMEE_SECTION7.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3RTAX21_DMEE_SECTION7
  INTO TABLE IT_J_3RTAX21_DMEE_SECTION7.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3RTAX21_DMEE_SECTION7
*  INTO TABLE @DATA(IT_J_3RTAX21_DMEE_SECTION72).
*--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_SECTION7 INDEX 1 INTO DATA(WA_J_3RTAX21_DMEE_SECTION72).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3RTAX21_DMEE_SECTION7 ASSIGNING <J_3RTAX21_DMEE_SECTION7>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3RTAX21_DMEE_SECTION7>-DNAME01 = 1.
<J_3RTAX21_DMEE_SECTION7>-DNAME02 = 1.
<J_3RTAX21_DMEE_SECTION7>-DNAME03 = 1.
<J_3RTAX21_DMEE_SECTION7>-DNAME04 = 1.
<J_3RTAX21_DMEE_SECTION7>-DNAME05 = 1.

ENDLOOP.

LOOP AT IT_J_3RTAX21_DMEE_SECTION7 INTO WA_J_3RTAX21_DMEE_SECTION7.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3RTAX21_DMEE_SECTION7-DNAME06, sy-vline,
  WA_J_3RTAX21_DMEE_SECTION7-DNAME07, sy-vline,
  WA_J_3RTAX21_DMEE_SECTION7-DNAME08, sy-vline,
  WA_J_3RTAX21_DMEE_SECTION7-DNAME09, sy-vline,
  WA_J_3RTAX21_DMEE_SECTION7-DNAME10, sy-vline,
  WA_J_3RTAX21_DMEE_SECTION7-DNAME11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3RTAX21_DMEE_SECTION7 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_SECTION7 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_SECTION7 INTO WA_J_3RTAX21_DMEE_SECTION7.


*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.
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_SECTION7_STR, 
DNAME01 TYPE STRING,
DNAME02 TYPE STRING,
DNAME03 TYPE STRING,
DNAME04 TYPE STRING,
DNAME05 TYPE STRING,
DNAME06 TYPE STRING,
DNAME07 TYPE STRING,
DNAME08 TYPE STRING,
DNAME09 TYPE STRING,
DNAME10 TYPE STRING,
DNAME11 TYPE STRING,
DNAME12 TYPE STRING,
DNAME13 TYPE STRING,
DNAME14 TYPE STRING,
DNAME15 TYPE STRING,
DNAME16 TYPE STRING,
DNAME17 TYPE STRING,
DNAME18 TYPE STRING,
DNAME19 TYPE STRING,
DNAME20 TYPE STRING,
DNAME21 TYPE STRING,
DNAME22 TYPE STRING,
DNAME23 TYPE STRING,
DNAME24 TYPE STRING,
DNAME25 TYPE STRING,
DNAME26 TYPE STRING,
DNAME27 TYPE STRING,
DNAME28 TYPE STRING,
DNAME29 TYPE STRING,
DNAME30 TYPE STRING,
DNAME31 TYPE STRING,
DNAME32 TYPE STRING,
DNAME33 TYPE STRING,
DNAME34 TYPE STRING,
DNAME35 TYPE STRING,
DNAME36 TYPE STRING,
DNAME37 TYPE STRING,
DNAME38 TYPE STRING,
DNAME39 TYPE STRING,
DNAME40 TYPE STRING,
DNAME41 TYPE STRING,
DNAME42 TYPE STRING,
DNAME43 TYPE STRING,
DNAME44 TYPE STRING,
DNAME45 TYPE STRING,
DNAME46 TYPE STRING,
DNAME47 TYPE STRING,
DNAME48 TYPE STRING,
DNAME49 TYPE STRING,
DNAME50 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3RTAX21_DMEE_SECTION7_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_SECTION7_STR-DNAME01 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME02 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME03 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME04 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME05 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME06 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME07 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME08 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME09 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME10 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME11 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME12 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME13 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME14 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME15 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME16 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME17 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME18 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME19 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME20 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME21 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME22 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME23 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME24 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME25 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME26 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME27 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME28 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME29 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME30 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME31 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME32 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME33 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME34 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME35 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME36 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME37 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME38 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME39 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME40 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME41 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME42 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME43 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME44 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME45 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME46 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME47 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME48 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME49 sy-vline 
WA_J_3RTAX21_DMEE_SECTION7_STR-DNAME50 sy-vline      INTO ld_text SEPARATED BY SPACE.

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