ABAP Select data from SAP table IMETDIMN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMETDIMN
*  INTO TABLE @DATA(IT_IMETDIMN2).
*--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_IMETDIMN INDEX 1 INTO DATA(WA_IMETDIMN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMETDIMN>-MANDT = 1.
<IMETDIMN>-MISSIONESSENTIALTASKUUID = 1.
<IMETDIMN>-MISSIONESSENTIALTASKID = 1.
<IMETDIMN>-MSNESNLTSKNAME = 1.
<IMETDIMN>-MSNESNLTSKDESCRIPTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMETDIMN-MSNESNLTSKSHORTNAME, sy-vline,
  WA_IMETDIMN-MSNESNLTSKVALIDITYSTARTDTE, sy-vline,
  WA_IMETDIMN-MSNESNLTSKVALIDITYENDDTE, sy-vline,
  WA_IMETDIMN-MSNESNLTSKTYPE, sy-vline,
  WA_IMETDIMN-MSNESNLTSKISROOTTASK, sy-vline,
  WA_IMETDIMN-MSNESNLTSKSTATUSOBJECTID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMETDIMN 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_IMETDIMN 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_IMETDIMN INTO WA_IMETDIMN.


*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 MISSIONESSENTIALTASKID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMETDIMN-MISSIONESSENTIALTASKID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMETDIMN-MISSIONESSENTIALTASKID.
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_IMETDIMN_STR, 
MANDT TYPE STRING,
MISSIONESSENTIALTASKUUID TYPE STRING,
MISSIONESSENTIALTASKID TYPE STRING,
MSNESNLTSKNAME TYPE STRING,
MSNESNLTSKDESCRIPTION TYPE STRING,
MSNESNLTSKSHORTNAME TYPE STRING,
MSNESNLTSKVALIDITYSTARTDTE TYPE STRING,
MSNESNLTSKVALIDITYENDDTE TYPE STRING,
MSNESNLTSKTYPE TYPE STRING,
MSNESNLTSKISROOTTASK TYPE STRING,
MSNESNLTSKSTATUSOBJECTID TYPE STRING,
MSNESNLTSKROOTUUID TYPE STRING,
DFSCAPBLTSTMNTSQNCNMBR TYPE STRING,
MSNESNLTSKSEARCHROOTNAME TYPE STRING,
STATUSCRITICALITY TYPE STRING,
STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMETDIMN_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_IMETDIMN_STR-MANDT sy-vline 
WA_IMETDIMN_STR-MISSIONESSENTIALTASKUUID sy-vline 
WA_IMETDIMN_STR-MISSIONESSENTIALTASKID sy-vline 
WA_IMETDIMN_STR-MSNESNLTSKNAME sy-vline 
WA_IMETDIMN_STR-MSNESNLTSKDESCRIPTION sy-vline 
WA_IMETDIMN_STR-MSNESNLTSKSHORTNAME sy-vline 
WA_IMETDIMN_STR-MSNESNLTSKVALIDITYSTARTDTE sy-vline 
WA_IMETDIMN_STR-MSNESNLTSKVALIDITYENDDTE sy-vline 
WA_IMETDIMN_STR-MSNESNLTSKTYPE sy-vline 
WA_IMETDIMN_STR-MSNESNLTSKISROOTTASK sy-vline 
WA_IMETDIMN_STR-MSNESNLTSKSTATUSOBJECTID sy-vline 
WA_IMETDIMN_STR-MSNESNLTSKROOTUUID sy-vline 
WA_IMETDIMN_STR-DFSCAPBLTSTMNTSQNCNMBR sy-vline 
WA_IMETDIMN_STR-MSNESNLTSKSEARCHROOTNAME sy-vline 
WA_IMETDIMN_STR-STATUSCRITICALITY sy-vline 
WA_IMETDIMN_STR-STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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