ABAP Select data from SAP table FDM_MIRR_CMD_EXT_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FDM_MIRR_CMD_EXT_DATA
*  INTO TABLE @DATA(IT_FDM_MIRR_CMD_EXT_DATA2).
*--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_FDM_MIRR_CMD_EXT_DATA INDEX 1 INTO DATA(WA_FDM_MIRR_CMD_EXT_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FDM_MIRR_CMD_EXT_DATA>-CUSTOMER_TYPE = 1.
<FDM_MIRR_CMD_EXT_DATA>-CUSTOMER = 1.
<FDM_MIRR_CMD_EXT_DATA>-GENERAL_DATA = 1.
<FDM_MIRR_CMD_EXT_DATA>-CUSTOMER_TYPE = 1.
<FDM_MIRR_CMD_EXT_DATA>-CUSTOMER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FDM_MIRR_CMD_EXT_DATA-TELEFAX, sy-vline,
  WA_FDM_MIRR_CMD_EXT_DATA-NAME, sy-vline,
  WA_FDM_MIRR_CMD_EXT_DATA-NAME_2, sy-vline,
  WA_FDM_MIRR_CMD_EXT_DATA-NAME_3, sy-vline,
  WA_FDM_MIRR_CMD_EXT_DATA-NAME_4, sy-vline,
  WA_FDM_MIRR_CMD_EXT_DATA-CITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FDM_MIRR_CMD_EXT_DATA 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_FDM_MIRR_CMD_EXT_DATA 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_FDM_MIRR_CMD_EXT_DATA INTO WA_FDM_MIRR_CMD_EXT_DATA.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_FDM_MIRR_CMD_EXT_DATA-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM_MIRR_CMD_EXT_DATA-LANGU.
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_FDM_MIRR_CMD_EXT_DATA_STR, 
CUSTOMER_TYPE TYPE STRING,
CUSTOMER TYPE STRING,
GENERAL_DATA TYPE STRING,
CUSTOMER_TYPE TYPE STRING,
CUSTOMER TYPE STRING,
TELEFAX TYPE STRING,
NAME TYPE STRING,
NAME_2 TYPE STRING,
NAME_3 TYPE STRING,
NAME_4 TYPE STRING,
CITY TYPE STRING,
DISTRICT TYPE STRING,
PO_BOX TYPE STRING,
POBX_PCD TYPE STRING,
POSTL_CODE TYPE STRING,
STREET TYPE STRING,
TELEPHONE TYPE STRING,
COUNTRY TYPE STRING,
COUNTRYISO TYPE STRING,
POBX_CTY TYPE STRING,
LANGU TYPE STRING,
LANGU_ISO TYPE STRING,
SORT_FLD TYPE STRING,
FORMOFADDR TYPE STRING,
TELEBOX TYPE STRING,
TELEPHONE2 TYPE STRING,
TELETEX TYPE STRING,
TELEX TYPE STRING,
EXPR_STAT TYPE STRING,
TRAIN_STAT TYPE STRING,
DATA_LINE TYPE STRING,
FISK_ADDR_TYPE TYPE STRING,
FISK_ADDR TYPE STRING,
ALT_PAYER_TYPE TYPE STRING,
ALT_PAYER TYPE STRING,
GROUPKEY TYPE STRING,
ACCNT_GRP TYPE STRING,
VENDOR_TYPE TYPE STRING,
VENDOR_NO TYPE STRING,
DEL_FLAG_G TYPE STRING,
SOLE_PROP TYPE STRING,
NON_MILIT TYPE STRING,
MILIT_USE TYPE STRING,
BCW TYPE STRING,
NUCL_NONP TYPE STRING,
NATL_SEC TYPE STRING,
MISS_TECH TYPE STRING,
BANKDETAIL_DATA TYPE STRING,
CONTACT_DATA TYPE STRING,
CMDB_DATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FDM_MIRR_CMD_EXT_DATA_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_FDM_MIRR_CMD_EXT_DATA_STR-CUSTOMER_TYPE sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-CUSTOMER sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-GENERAL_DATA sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-CUSTOMER_TYPE sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-CUSTOMER sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-TELEFAX sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-NAME sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-NAME_2 sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-NAME_3 sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-NAME_4 sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-CITY sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-DISTRICT sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-PO_BOX sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-POBX_PCD sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-POSTL_CODE sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-STREET sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-TELEPHONE sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-COUNTRY sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-COUNTRYISO sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-POBX_CTY sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-LANGU sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-LANGU_ISO sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-SORT_FLD sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-FORMOFADDR sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-TELEBOX sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-TELEPHONE2 sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-TELETEX sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-TELEX sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-EXPR_STAT sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-TRAIN_STAT sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-DATA_LINE sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-FISK_ADDR_TYPE sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-FISK_ADDR sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-ALT_PAYER_TYPE sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-ALT_PAYER sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-GROUPKEY sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-ACCNT_GRP sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-VENDOR_TYPE sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-VENDOR_NO sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-DEL_FLAG_G sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-SOLE_PROP sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-NON_MILIT sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-MILIT_USE sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-BCW sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-NUCL_NONP sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-NATL_SEC sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-MISS_TECH sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-BANKDETAIL_DATA sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-CONTACT_DATA sy-vline 
WA_FDM_MIRR_CMD_EXT_DATA_STR-CMDB_DATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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