ABAP Select data from SAP table FMRE10_K into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FMRE10_K 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 FMRE10_K. 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 FMRE10_K 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_FMRE10_K TYPE STANDARD TABLE OF FMRE10_K,
      WA_FMRE10_K TYPE FMRE10_K,
      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: <FMRE10_K> TYPE FMRE10_K.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FMRE10_K.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FMRE10_K
  INTO TABLE IT_FMRE10_K.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMRE10_K
*  INTO TABLE @DATA(IT_FMRE10_K2).
*--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_FMRE10_K INDEX 1 INTO DATA(WA_FMRE10_K2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FMRE10_K ASSIGNING <FMRE10_K>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMRE10_K>-BELNR = 1.
<FMRE10_K>-BLTYP = 1.
<FMRE10_K>-CTEXT = 1.
<FMRE10_K>-BLART = 1.
<FMRE10_K>-WAERS = 1.

ENDLOOP.

LOOP AT IT_FMRE10_K INTO WA_FMRE10_K.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMRE10_K-BUKRS, sy-vline,
  WA_FMRE10_K-BLDAT, sy-vline,
  WA_FMRE10_K-KERFAS, sy-vline,
  WA_FMRE10_K-KTEXT, sy-vline,
  WA_FMRE10_K-BUDAT, sy-vline,
  WA_FMRE10_K-KERDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMRE10_K 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_FMRE10_K 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_FMRE10_K INTO WA_FMRE10_K.


*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_FMRE10_K-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMRE10_K-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOTKZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMRE10_K-LOTKZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMRE10_K-LOTKZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_FMRE10_K-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMRE10_K-KURSF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURSUK
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_FMRE10_K-KURSUK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMRE10_K-KURSUK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PFM_CONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_FMRE10_K-PFM_CONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMRE10_K-PFM_CONTRACT.
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_FMRE10_K_STR, 
BELNR TYPE STRING,
BLTYP TYPE STRING,
CTEXT TYPE STRING,
BLART TYPE STRING,
WAERS TYPE STRING,
BUKRS TYPE STRING,
BLDAT TYPE STRING,
KERFAS TYPE STRING,
KTEXT TYPE STRING,
BUDAT TYPE STRING,
KERDAT TYPE STRING,
KAENDE TYPE STRING,
KAEDAT TYPE STRING,
XBLNR TYPE STRING,
FMRE_XBLNR2 TYPE STRING,
FMRE_XBLNR3 TYPE STRING,
KOKRS TYPE STRING,
FIKRS TYPE STRING,
LOTKZ TYPE STRING,
HWAER TYPE STRING,
KURSF TYPE STRING,
WWERT TYPE STRING,
BLKKZ TYPE STRING,
FEXEC TYPE STRING,
FMREASON TYPE STRING,
WKAPK TYPE STRING,
KURSUK TYPE STRING,
DATUK TYPE STRING,
DOCLOCK TYPE STRING,
KVRGNG TYPE STRING,
KLOEKZ TYPE STRING,
MVSTAT TYPE STRING,
REFT TYPE STRING,
MODA TYPE STRING,
PFM_FOA TYPE STRING,
PFM_SPEC TYPE STRING,
PFM_CONTRACT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMRE10_K_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_FMRE10_K_STR-BELNR sy-vline 
WA_FMRE10_K_STR-BLTYP sy-vline 
WA_FMRE10_K_STR-CTEXT sy-vline 
WA_FMRE10_K_STR-BLART sy-vline 
WA_FMRE10_K_STR-WAERS sy-vline 
WA_FMRE10_K_STR-BUKRS sy-vline 
WA_FMRE10_K_STR-BLDAT sy-vline 
WA_FMRE10_K_STR-KERFAS sy-vline 
WA_FMRE10_K_STR-KTEXT sy-vline 
WA_FMRE10_K_STR-BUDAT sy-vline 
WA_FMRE10_K_STR-KERDAT sy-vline 
WA_FMRE10_K_STR-KAENDE sy-vline 
WA_FMRE10_K_STR-KAEDAT sy-vline 
WA_FMRE10_K_STR-XBLNR sy-vline 
WA_FMRE10_K_STR-FMRE_XBLNR2 sy-vline 
WA_FMRE10_K_STR-FMRE_XBLNR3 sy-vline 
WA_FMRE10_K_STR-KOKRS sy-vline 
WA_FMRE10_K_STR-FIKRS sy-vline 
WA_FMRE10_K_STR-LOTKZ sy-vline 
WA_FMRE10_K_STR-HWAER sy-vline 
WA_FMRE10_K_STR-KURSF sy-vline 
WA_FMRE10_K_STR-WWERT sy-vline 
WA_FMRE10_K_STR-BLKKZ sy-vline 
WA_FMRE10_K_STR-FEXEC sy-vline 
WA_FMRE10_K_STR-FMREASON sy-vline 
WA_FMRE10_K_STR-WKAPK sy-vline 
WA_FMRE10_K_STR-KURSUK sy-vline 
WA_FMRE10_K_STR-DATUK sy-vline 
WA_FMRE10_K_STR-DOCLOCK sy-vline 
WA_FMRE10_K_STR-KVRGNG sy-vline 
WA_FMRE10_K_STR-KLOEKZ sy-vline 
WA_FMRE10_K_STR-MVSTAT sy-vline 
WA_FMRE10_K_STR-REFT sy-vline 
WA_FMRE10_K_STR-MODA sy-vline 
WA_FMRE10_K_STR-PFM_FOA sy-vline 
WA_FMRE10_K_STR-PFM_SPEC sy-vline 
WA_FMRE10_K_STR-PFM_CONTRACT sy-vline      INTO ld_text SEPARATED BY SPACE.

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