ABAP Select data from SAP table IMSMTFLSTRUC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMSMTFLSTRUC
*  INTO TABLE @DATA(IT_IMSMTFLSTRUC2).
*--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_IMSMTFLSTRUC INDEX 1 INTO DATA(WA_IMSMTFLSTRUC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMSMTFLSTRUC>-MANDT = 1.
<IMSMTFLSTRUC>-DFSMAINTFUNCTIONALLOCATION = 1.
<IMSMTFLSTRUC>-EQUIPMENT = 1.
<IMSMTFLSTRUC>-MEASUREMENTDOCUMENT = 1.
<IMSMTFLSTRUC>-MEASURINGPOINT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMSMTFLSTRUC-MSMTRDNGDATE, sy-vline,
  WA_IMSMTFLSTRUC-MSMTRDNGTIME, sy-vline,
  WA_IMSMTFLSTRUC-CHARACTERISTIC, sy-vline,
  WA_IMSMTFLSTRUC-CHARCDESCRIPTION, sy-vline,
  WA_IMSMTFLSTRUC-EQUIPMENTNAME, sy-vline,
  WA_IMSMTFLSTRUC-FUNCTIONALLOCATIONNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMSMTFLSTRUC 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_IMSMTFLSTRUC 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_IMSMTFLSTRUC INTO WA_IMSMTFLSTRUC.


*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 TPLNR, internal->external for field DFSMAINTFUNCTIONALLOCATION
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_IMSMTFLSTRUC-DFSMAINTFUNCTIONALLOCATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSMTFLSTRUC-DFSMAINTFUNCTIONALLOCATION.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEASUREMENTRANGEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IMSMTFLSTRUC-MEASUREMENTRANGEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSMTFLSTRUC-MEASUREMENTRANGEUNIT.
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_IMSMTFLSTRUC_STR, 
MANDT TYPE STRING,
DFSMAINTFUNCTIONALLOCATION TYPE STRING,
EQUIPMENT TYPE STRING,
MEASUREMENTDOCUMENT TYPE STRING,
MEASURINGPOINT TYPE STRING,
MSMTRDNGDATE TYPE STRING,
MSMTRDNGTIME TYPE STRING,
CHARACTERISTIC TYPE STRING,
CHARCDESCRIPTION TYPE STRING,
EQUIPMENTNAME TYPE STRING,
FUNCTIONALLOCATIONNAME TYPE STRING,
MEASURINGPOINTDESCRIPTION TYPE STRING,
MSMTCOUNTERREADINGDIFFERENCE TYPE STRING,
MEASUREMENTCOUNTERREADING TYPE STRING,
MEASUREMENTREADING TYPE STRING,
MEASUREMENTDOCUMENTTEXT TYPE STRING,
MSMTVALUATIONCODE TYPE STRING,
MEASUREMENTRANGEUNIT TYPE STRING,
MEASUREMENTREADINGINENTRYUOM TYPE STRING,
MEASURINGPOINTPOSITIONNUMBER TYPE STRING,
DFSMAINTEXPLOSIONTYPE TYPE STRING,
DFSMAINTEQUIPMENTUTILIZERID TYPE STRING,
UNITOFMEASURETECHNICALNAME TYPE STRING,
TECHOBJECTWITHLEADINGZEROS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMSMTFLSTRUC_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_IMSMTFLSTRUC_STR-MANDT sy-vline 
WA_IMSMTFLSTRUC_STR-DFSMAINTFUNCTIONALLOCATION sy-vline 
WA_IMSMTFLSTRUC_STR-EQUIPMENT sy-vline 
WA_IMSMTFLSTRUC_STR-MEASUREMENTDOCUMENT sy-vline 
WA_IMSMTFLSTRUC_STR-MEASURINGPOINT sy-vline 
WA_IMSMTFLSTRUC_STR-MSMTRDNGDATE sy-vline 
WA_IMSMTFLSTRUC_STR-MSMTRDNGTIME sy-vline 
WA_IMSMTFLSTRUC_STR-CHARACTERISTIC sy-vline 
WA_IMSMTFLSTRUC_STR-CHARCDESCRIPTION sy-vline 
WA_IMSMTFLSTRUC_STR-EQUIPMENTNAME sy-vline 
WA_IMSMTFLSTRUC_STR-FUNCTIONALLOCATIONNAME sy-vline 
WA_IMSMTFLSTRUC_STR-MEASURINGPOINTDESCRIPTION sy-vline 
WA_IMSMTFLSTRUC_STR-MSMTCOUNTERREADINGDIFFERENCE sy-vline 
WA_IMSMTFLSTRUC_STR-MEASUREMENTCOUNTERREADING sy-vline 
WA_IMSMTFLSTRUC_STR-MEASUREMENTREADING sy-vline 
WA_IMSMTFLSTRUC_STR-MEASUREMENTDOCUMENTTEXT sy-vline 
WA_IMSMTFLSTRUC_STR-MSMTVALUATIONCODE sy-vline 
WA_IMSMTFLSTRUC_STR-MEASUREMENTRANGEUNIT sy-vline 
WA_IMSMTFLSTRUC_STR-MEASUREMENTREADINGINENTRYUOM sy-vline 
WA_IMSMTFLSTRUC_STR-MEASURINGPOINTPOSITIONNUMBER sy-vline 
WA_IMSMTFLSTRUC_STR-DFSMAINTEXPLOSIONTYPE sy-vline 
WA_IMSMTFLSTRUC_STR-DFSMAINTEQUIPMENTUTILIZERID sy-vline 
WA_IMSMTFLSTRUC_STR-UNITOFMEASURETECHNICALNAME sy-vline 
WA_IMSMTFLSTRUC_STR-TECHOBJECTWITHLEADINGZEROS sy-vline      INTO ld_text SEPARATED BY SPACE.

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