ABAP Select data from SAP table IECNOMRDIR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IECNOMRDIR 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 IECNOMRDIR. 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 IECNOMRDIR 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_IECNOMRDIR TYPE STANDARD TABLE OF IECNOMRDIR,
      WA_IECNOMRDIR TYPE IECNOMRDIR,
      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: <IECNOMRDIR> TYPE IECNOMRDIR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IECNOMRDIR
*  INTO TABLE @DATA(IT_IECNOMRDIR2).
*--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_IECNOMRDIR INDEX 1 INTO DATA(WA_IECNOMRDIR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IECNOMRDIR>-MANDT = 1.
<IECNOMRDIR>-CHANGENUMBER = 1.
<IECNOMRDIR>-DOCUMENTTYPE = 1.
<IECNOMRDIR>-DOCUMENTINFORECORD = 1.
<IECNOMRDIR>-DOCUMENTPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IECNOMRDIR-DOCUMENTVERSION, sy-vline,
  WA_IECNOMRDIR-OBJMGMTRECDOBJECT, sy-vline,
  WA_IECNOMRDIR-OBJMGMTRECDOBJECTINTERNALID, sy-vline,
  WA_IECNOMRDIR-CHGNMBRALTERNATIVEDATECOUNTER, sy-vline,
  WA_IECNOMRDIR-OBJMGMTRECDDESCRIPTION, sy-vline,
  WA_IECNOMRDIR-OBJMGMTRECDITEMUUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IECNOMRDIR 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_IECNOMRDIR 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_IECNOMRDIR INTO WA_IECNOMRDIR.


*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 CHANGENUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IECNOMRDIR-CHANGENUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IECNOMRDIR-CHANGENUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCUMENTINFORECORD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IECNOMRDIR-DOCUMENTINFORECORD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IECNOMRDIR-DOCUMENTINFORECORD.
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_IECNOMRDIR_STR, 
MANDT TYPE STRING,
CHANGENUMBER TYPE STRING,
DOCUMENTTYPE TYPE STRING,
DOCUMENTINFORECORD TYPE STRING,
DOCUMENTPART TYPE STRING,
DOCUMENTVERSION TYPE STRING,
OBJMGMTRECDOBJECT TYPE STRING,
OBJMGMTRECDOBJECTINTERNALID TYPE STRING,
CHGNMBRALTERNATIVEDATECOUNTER TYPE STRING,
OBJMGMTRECDDESCRIPTION TYPE STRING,
OBJMGMTRECDITEMUUID TYPE STRING,
OBJMGMTRECDLASTCHANGEDAT TYPE STRING,
OBJMGMTRECDLASTCHANGEDBY TYPE STRING,
OBJMGMTRECDCREATIONDATE TYPE STRING,
OBJMGMTRECDCREATEDBY TYPE STRING,
OBJMGMTRECDOBJLASTCHANGEDAT TYPE STRING,
OBJMGMTRECDOBJLASTCHANGEDBY TYPE STRING,
OBJMGMTRECDOBJISLOCKEDFORCHG TYPE STRING,
OBJMGMTRECDOBJISBASELINED TYPE STRING,
OBJMGMTRECDCHANGETYPE TYPE STRING,
OBJMGMTRECDOBJISPLANNED TYPE STRING,
OBJMGMTRECDOBJREVISIONLEVEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IECNOMRDIR_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_IECNOMRDIR_STR-MANDT sy-vline 
WA_IECNOMRDIR_STR-CHANGENUMBER sy-vline 
WA_IECNOMRDIR_STR-DOCUMENTTYPE sy-vline 
WA_IECNOMRDIR_STR-DOCUMENTINFORECORD sy-vline 
WA_IECNOMRDIR_STR-DOCUMENTPART sy-vline 
WA_IECNOMRDIR_STR-DOCUMENTVERSION sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDOBJECT sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDOBJECTINTERNALID sy-vline 
WA_IECNOMRDIR_STR-CHGNMBRALTERNATIVEDATECOUNTER sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDDESCRIPTION sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDITEMUUID sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDLASTCHANGEDAT sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDLASTCHANGEDBY sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDCREATIONDATE sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDCREATEDBY sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDOBJLASTCHANGEDAT sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDOBJLASTCHANGEDBY sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDOBJISLOCKEDFORCHG sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDOBJISBASELINED sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDCHANGETYPE sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDOBJISPLANNED sy-vline 
WA_IECNOMRDIR_STR-OBJMGMTRECDOBJREVISIONLEVEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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