ABAP Select data from SAP table J_1BNFITMRULE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1BNFITMRULE 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_1BNFITMRULE. 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_1BNFITMRULE 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_1BNFITMRULE TYPE STANDARD TABLE OF J_1BNFITMRULE,
      WA_J_1BNFITMRULE TYPE J_1BNFITMRULE,
      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_1BNFITMRULE> TYPE J_1BNFITMRULE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1BNFITMRULE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1BNFITMRULE
  INTO TABLE IT_J_1BNFITMRULE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1BNFITMRULE
*  INTO TABLE @DATA(IT_J_1BNFITMRULE2).
*--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_1BNFITMRULE INDEX 1 INTO DATA(WA_J_1BNFITMRULE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1BNFITMRULE ASSIGNING <J_1BNFITMRULE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1BNFITMRULE>-MANDT = 1.
<J_1BNFITMRULE>-ITMTYP = 1.
<J_1BNFITMRULE>-DEFAULTTYP = 1.
<J_1BNFITMRULE>-ICMSSTAT = 1.
<J_1BNFITMRULE>-IPISTAT = 1.

ENDLOOP.

LOOP AT IT_J_1BNFITMRULE INTO WA_J_1BNFITMRULE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1BNFITMRULE-CHECKGRGI, sy-vline,
  WA_J_1BNFITMRULE-UNIQUEIV, sy-vline,
  WA_J_1BNFITMRULE-NOREFIV, sy-vline,
  WA_J_1BNFITMRULE-IGNOREIM, sy-vline,
  WA_J_1BNFITMRULE-CHECKDIR, sy-vline,
  WA_J_1BNFITMRULE-UNIQUEIM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1BNFITMRULE 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_1BNFITMRULE 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_1BNFITMRULE INTO WA_J_1BNFITMRULE.


*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 ITMTYP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFITMRULE-ITMTYP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFITMRULE-ITMTYP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINITEM1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFITMRULE-MAINITEM1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFITMRULE-MAINITEM1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINITEM2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFITMRULE-MAINITEM2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFITMRULE-MAINITEM2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINITEM3
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFITMRULE-MAINITEM3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFITMRULE-MAINITEM3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINITEM4
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFITMRULE-MAINITEM4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFITMRULE-MAINITEM4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINITEM5
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFITMRULE-MAINITEM5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFITMRULE-MAINITEM5.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINITEM6
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFITMRULE-MAINITEM6
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFITMRULE-MAINITEM6.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINITEM7
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFITMRULE-MAINITEM7
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFITMRULE-MAINITEM7.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINITEM8
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFITMRULE-MAINITEM8
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFITMRULE-MAINITEM8.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINITEM9
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFITMRULE-MAINITEM9
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFITMRULE-MAINITEM9.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINITEM10
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1BNFITMRULE-MAINITEM10
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1BNFITMRULE-MAINITEM10.
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_1BNFITMRULE_STR, 
MANDT TYPE STRING,
ITMTYP TYPE STRING,
DEFAULTTYP TYPE STRING,
ICMSSTAT TYPE STRING,
IPISTAT TYPE STRING,
CHECKGRGI TYPE STRING,
UNIQUEIV TYPE STRING,
NOREFIV TYPE STRING,
IGNOREIM TYPE STRING,
CHECKDIR TYPE STRING,
UNIQUEIM TYPE STRING,
REFMD TYPE STRING,
OBSERVAT TYPE STRING,
EXCOTHBASICMS TYPE STRING,
EXCOTHBASIPI TYPE STRING,
OTHBAS TYPE STRING,
IGNORETOTAL TYPE STRING,
SKIP TYPE STRING,
REDMWSKZ TYPE STRING,
MAINITEM1 TYPE STRING,
MAINITEM2 TYPE STRING,
MAINITEM3 TYPE STRING,
MAINITEM4 TYPE STRING,
MAINITEM5 TYPE STRING,
MAINITEM6 TYPE STRING,
MAINITEM7 TYPE STRING,
MAINITEM8 TYPE STRING,
MAINITEM9 TYPE STRING,
MAINITEM10 TYPE STRING,
TRANSFER TYPE STRING,
TRDPARTY TYPE STRING,
TEXTMOD1 TYPE STRING,
TEXTMOD2 TYPE STRING,
CLEARREF1 TYPE STRING,
CLEARREF2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1BNFITMRULE_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_1BNFITMRULE_STR-MANDT sy-vline 
WA_J_1BNFITMRULE_STR-ITMTYP sy-vline 
WA_J_1BNFITMRULE_STR-DEFAULTTYP sy-vline 
WA_J_1BNFITMRULE_STR-ICMSSTAT sy-vline 
WA_J_1BNFITMRULE_STR-IPISTAT sy-vline 
WA_J_1BNFITMRULE_STR-CHECKGRGI sy-vline 
WA_J_1BNFITMRULE_STR-UNIQUEIV sy-vline 
WA_J_1BNFITMRULE_STR-NOREFIV sy-vline 
WA_J_1BNFITMRULE_STR-IGNOREIM sy-vline 
WA_J_1BNFITMRULE_STR-CHECKDIR sy-vline 
WA_J_1BNFITMRULE_STR-UNIQUEIM sy-vline 
WA_J_1BNFITMRULE_STR-REFMD sy-vline 
WA_J_1BNFITMRULE_STR-OBSERVAT sy-vline 
WA_J_1BNFITMRULE_STR-EXCOTHBASICMS sy-vline 
WA_J_1BNFITMRULE_STR-EXCOTHBASIPI sy-vline 
WA_J_1BNFITMRULE_STR-OTHBAS sy-vline 
WA_J_1BNFITMRULE_STR-IGNORETOTAL sy-vline 
WA_J_1BNFITMRULE_STR-SKIP sy-vline 
WA_J_1BNFITMRULE_STR-REDMWSKZ sy-vline 
WA_J_1BNFITMRULE_STR-MAINITEM1 sy-vline 
WA_J_1BNFITMRULE_STR-MAINITEM2 sy-vline 
WA_J_1BNFITMRULE_STR-MAINITEM3 sy-vline 
WA_J_1BNFITMRULE_STR-MAINITEM4 sy-vline 
WA_J_1BNFITMRULE_STR-MAINITEM5 sy-vline 
WA_J_1BNFITMRULE_STR-MAINITEM6 sy-vline 
WA_J_1BNFITMRULE_STR-MAINITEM7 sy-vline 
WA_J_1BNFITMRULE_STR-MAINITEM8 sy-vline 
WA_J_1BNFITMRULE_STR-MAINITEM9 sy-vline 
WA_J_1BNFITMRULE_STR-MAINITEM10 sy-vline 
WA_J_1BNFITMRULE_STR-TRANSFER sy-vline 
WA_J_1BNFITMRULE_STR-TRDPARTY sy-vline 
WA_J_1BNFITMRULE_STR-TEXTMOD1 sy-vline 
WA_J_1BNFITMRULE_STR-TEXTMOD2 sy-vline 
WA_J_1BNFITMRULE_STR-CLEARREF1 sy-vline 
WA_J_1BNFITMRULE_STR-CLEARREF2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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