ABAP Select data from SAP table J_3RSDETAILTABLE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3RSDETAILTABLE 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_3RSDETAILTABLE. 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_3RSDETAILTABLE 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_3RSDETAILTABLE TYPE STANDARD TABLE OF J_3RSDETAILTABLE,
      WA_J_3RSDETAILTABLE TYPE J_3RSDETAILTABLE,
      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_3RSDETAILTABLE> TYPE J_3RSDETAILTABLE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3RSDETAILTABLE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3RSDETAILTABLE
  INTO TABLE IT_J_3RSDETAILTABLE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3RSDETAILTABLE
*  INTO TABLE @DATA(IT_J_3RSDETAILTABLE2).
*--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_3RSDETAILTABLE INDEX 1 INTO DATA(WA_J_3RSDETAILTABLE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3RSDETAILTABLE ASSIGNING <J_3RSDETAILTABLE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3RSDETAILTABLE>-BELNR = 1.
<J_3RSDETAILTABLE>-BUZEI = 1.
<J_3RSDETAILTABLE>-BUZEI_SMALL = 1.
<J_3RSDETAILTABLE>-DATE_DOC = 1.
<J_3RSDETAILTABLE>-DMBTR = 1.

ENDLOOP.

LOOP AT IT_J_3RSDETAILTABLE INTO WA_J_3RSDETAILTABLE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3RSDETAILTABLE-WAERS, sy-vline,
  WA_J_3RSDETAILTABLE-WRBTR, sy-vline,
  WA_J_3RSDETAILTABLE-BWAERS, sy-vline,
  WA_J_3RSDETAILTABLE-MATNR, sy-vline,
  WA_J_3RSDETAILTABLE-ZMENG, sy-vline,
  WA_J_3RSDETAILTABLE-ZIEME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3RSDETAILTABLE 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_3RSDETAILTABLE 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_3RSDETAILTABLE INTO WA_J_3RSDETAILTABLE.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RSDETAILTABLE-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RSDETAILTABLE-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_3RSDETAILTABLE-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RSDETAILTABLE-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZIEME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_3RSDETAILTABLE-ZIEME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RSDETAILTABLE-ZIEME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RSDETAILTABLE-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RSDETAILTABLE-KUNNR.
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_3RSDETAILTABLE_STR, 
BELNR TYPE STRING,
BUZEI TYPE STRING,
BUZEI_SMALL TYPE STRING,
DATE_DOC TYPE STRING,
DMBTR TYPE STRING,
WAERS TYPE STRING,
WRBTR TYPE STRING,
BWAERS TYPE STRING,
MATNR TYPE STRING,
ZMENG TYPE STRING,
ZIEME TYPE STRING,
KUNNR TYPE STRING,
BUKRS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3RSDETAILTABLE_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_3RSDETAILTABLE_STR-BELNR sy-vline 
WA_J_3RSDETAILTABLE_STR-BUZEI sy-vline 
WA_J_3RSDETAILTABLE_STR-BUZEI_SMALL sy-vline 
WA_J_3RSDETAILTABLE_STR-DATE_DOC sy-vline 
WA_J_3RSDETAILTABLE_STR-DMBTR sy-vline 
WA_J_3RSDETAILTABLE_STR-WAERS sy-vline 
WA_J_3RSDETAILTABLE_STR-WRBTR sy-vline 
WA_J_3RSDETAILTABLE_STR-BWAERS sy-vline 
WA_J_3RSDETAILTABLE_STR-MATNR sy-vline 
WA_J_3RSDETAILTABLE_STR-ZMENG sy-vline 
WA_J_3RSDETAILTABLE_STR-ZIEME sy-vline 
WA_J_3RSDETAILTABLE_STR-KUNNR sy-vline 
WA_J_3RSDETAILTABLE_STR-BUKRS sy-vline      INTO ld_text SEPARATED BY SPACE.

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