ABAP Select data from SAP table FMFG_IMP_RC_FIELDS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMFG_IMP_RC_FIELDS
*  INTO TABLE @DATA(IT_FMFG_IMP_RC_FIELDS2).
*--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_FMFG_IMP_RC_FIELDS INDEX 1 INTO DATA(WA_FMFG_IMP_RC_FIELDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMFG_IMP_RC_FIELDS>-BUKRS = 1.
<FMFG_IMP_RC_FIELDS>-GJAHR = 1.
<FMFG_IMP_RC_FIELDS>-BELNR = 1.
<FMFG_IMP_RC_FIELDS>-XBLNR = 1.
<FMFG_IMP_RC_FIELDS>-BLDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMFG_IMP_RC_FIELDS-REINDAT, sy-vline,
  WA_FMFG_IMP_RC_FIELDS-CPUDT, sy-vline,
  WA_FMFG_IMP_RC_FIELDS-BUDAT, sy-vline,
  WA_FMFG_IMP_RC_FIELDS-USNAM, sy-vline,
  WA_FMFG_IMP_RC_FIELDS-BLART, sy-vline,
  WA_FMFG_IMP_RC_FIELDS-DOC_STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMFG_IMP_RC_FIELDS 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_FMFG_IMP_RC_FIELDS 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_FMFG_IMP_RC_FIELDS INTO WA_FMFG_IMP_RC_FIELDS.


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

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

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMFG_IMP_RC_FIELDS-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMFG_IMP_RC_FIELDS-LIFNR.
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_FMFG_IMP_RC_FIELDS_STR, 
BUKRS TYPE STRING,
GJAHR TYPE STRING,
BELNR TYPE STRING,
XBLNR TYPE STRING,
BLDAT TYPE STRING,
REINDAT TYPE STRING,
CPUDT TYPE STRING,
BUDAT TYPE STRING,
USNAM TYPE STRING,
BLART TYPE STRING,
DOC_STATUS TYPE STRING,
AWKEY TYPE STRING,
AWTYP TYPE STRING,
LIFNR TYPE STRING,
EXTRA_DAYS TYPE STRING,
FLAG TYPE STRING,
PARKED_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMFG_IMP_RC_FIELDS_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_FMFG_IMP_RC_FIELDS_STR-BUKRS sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-GJAHR sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-BELNR sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-XBLNR sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-BLDAT sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-REINDAT sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-CPUDT sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-BUDAT sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-USNAM sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-BLART sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-DOC_STATUS sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-AWKEY sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-AWTYP sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-LIFNR sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-EXTRA_DAYS sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-FLAG sy-vline 
WA_FMFG_IMP_RC_FIELDS_STR-PARKED_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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