ABAP Select data from SAP table FMSNRULE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMSNRULE
*  INTO TABLE @DATA(IT_FMSNRULE2).
*--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_FMSNRULE INDEX 1 INTO DATA(WA_FMSNRULE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMSNRULE>-MANDT = 1.
<FMSNRULE>-VFIPEX = 1.
<FMSNRULE>-VFICTR = 1.
<FMSNRULE>-VFONDS = 1.
<FMSNRULE>-GJAHR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMSNRULE-FIKRS, sy-vline,
  WA_FMSNRULE-DISTRIB, sy-vline,
  WA_FMSNRULE-PCOLTYP, sy-vline,
  WA_FMSNRULE-PCFIPEX, sy-vline,
  WA_FMSNRULE-PCFICTR, sy-vline,
  WA_FMSNRULE-PCFONDS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMSNRULE 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_FMSNRULE 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_FMSNRULE INTO WA_FMSNRULE.


*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 FMCIL, internal->external for field VFIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FMSNRULE-VFIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMSNRULE-VFIPEX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMSNRULE-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMSNRULE-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field PCFIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FMSNRULE-PCFIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMSNRULE-PCFIPEX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field CCFIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FMSNRULE-CCFIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMSNRULE-CCFIPEX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field HHFIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_FMSNRULE-HHFIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMSNRULE-HHFIPEX.
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_FMSNRULE_STR, 
MANDT TYPE STRING,
VFIPEX TYPE STRING,
VFICTR TYPE STRING,
VFONDS TYPE STRING,
GJAHR TYPE STRING,
FIKRS TYPE STRING,
DISTRIB TYPE STRING,
PCOLTYP TYPE STRING,
PCFIPEX TYPE STRING,
PCFICTR TYPE STRING,
PCFONDS TYPE STRING,
PCQUANTITY TYPE STRING,
PCBUDGET TYPE STRING,
PCACTUAL TYPE STRING,
PBUDGDAT TYPE STRING,
PDISTDAT TYPE STRING,
CCOLTYP TYPE STRING,
CCFIPEX TYPE STRING,
CCFICTR TYPE STRING,
CCFONDS TYPE STRING,
CCQUANTITY TYPE STRING,
CCBUDGET TYPE STRING,
CCACTUAL TYPE STRING,
CBUDGDAT TYPE STRING,
CDISTDAT TYPE STRING,
HHFIPEX TYPE STRING,
HHFICTR TYPE STRING,
HHFONDS TYPE STRING,
DEAKTIV TYPE STRING,
SNERROR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMSNRULE_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_FMSNRULE_STR-MANDT sy-vline 
WA_FMSNRULE_STR-VFIPEX sy-vline 
WA_FMSNRULE_STR-VFICTR sy-vline 
WA_FMSNRULE_STR-VFONDS sy-vline 
WA_FMSNRULE_STR-GJAHR sy-vline 
WA_FMSNRULE_STR-FIKRS sy-vline 
WA_FMSNRULE_STR-DISTRIB sy-vline 
WA_FMSNRULE_STR-PCOLTYP sy-vline 
WA_FMSNRULE_STR-PCFIPEX sy-vline 
WA_FMSNRULE_STR-PCFICTR sy-vline 
WA_FMSNRULE_STR-PCFONDS sy-vline 
WA_FMSNRULE_STR-PCQUANTITY sy-vline 
WA_FMSNRULE_STR-PCBUDGET sy-vline 
WA_FMSNRULE_STR-PCACTUAL sy-vline 
WA_FMSNRULE_STR-PBUDGDAT sy-vline 
WA_FMSNRULE_STR-PDISTDAT sy-vline 
WA_FMSNRULE_STR-CCOLTYP sy-vline 
WA_FMSNRULE_STR-CCFIPEX sy-vline 
WA_FMSNRULE_STR-CCFICTR sy-vline 
WA_FMSNRULE_STR-CCFONDS sy-vline 
WA_FMSNRULE_STR-CCQUANTITY sy-vline 
WA_FMSNRULE_STR-CCBUDGET sy-vline 
WA_FMSNRULE_STR-CCACTUAL sy-vline 
WA_FMSNRULE_STR-CBUDGDAT sy-vline 
WA_FMSNRULE_STR-CDISTDAT sy-vline 
WA_FMSNRULE_STR-HHFIPEX sy-vline 
WA_FMSNRULE_STR-HHFICTR sy-vline 
WA_FMSNRULE_STR-HHFONDS sy-vline 
WA_FMSNRULE_STR-DEAKTIV sy-vline 
WA_FMSNRULE_STR-SNERROR sy-vline      INTO ld_text SEPARATED BY SPACE.

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