Removing matrix column by Unique ID

Hi,
Can i remove Matrix column by its Unique ID???
If so can you pls provide me the syntax
Thanks

Hi Pankil,
Try This....
Set oItem = oForm.Items.Add("Matrix1", it_MATRIX)
Set oColumn = oColumns.Add("G", it_LINKED_BUTTON)
oColumn.TitleObject.Caption = "Linked to none object"
oColumn.Width = 40
oColumn.Editable = True
'Removing column of matrix with unique id "G"
Call oColumns.Remove(u201CGu201D) also possible with column index
Thanks
Shafi

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SQL> CREATE TABLE tab_uniqtest(student_id     NUMBER(10) UNIQUE,
                          student_name   VARCHAR2(15),
                                                  course_name    VARCHAR2(15)
2    3    4
Table created.
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SQL> CREATE TABLE tab_extuniqtest(student_id     NUMBER(10),
2                               student_name   VARCHAR2(15),
3                                                  course_name    VARCHAR2(15)
4                              )
5 ORGANIZATION EXTERNAL
6 (
7 DEFAULT DIRECTORY ann_dir
8 ACCESS PARAMETERS
9 (
10    RECORDS DELIMITED BY NEWLINE
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3                                 ORA_ERR_ROWID$      ROWID,
4                                 ORA_ERR_OPTYP$      VARCHAR2(2),
5                                 ORA_ERR_TAG$        VARCHAR2(4000),
6                                 inserted_dt         VARCHAR2(50) DEFAULT TO_CHAR(SYSDATE,'YYYY-MM-DD'),
7                                 student_id              VARCHAR2(10)
8                                  );
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---- Procedure to insert from external table
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2 AS
3 v_errcnt NUMBER;
4 BEGIN
5      INSERT INTO tab_uniqtest
6      SELECT * FROM tab_extuniqtest
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8      SELECT COUNT(1) into v_errcnt
9      FROM dmlerrlog_uniqtest
10      WHERE ORA_ERR_TAG$ = 'PROC_UNIQTEST@TAB_UNIQTEST';
11       IF(v_errcnt > 0) THEN
12       ROLLBACK;
13      ELSE
14        COMMIT;
15       END IF;
16      DBMS_OUTPUT.PUT_LINE ( 'Procedure PROC_UNIQTEST is completed with ' || v_errcnt || ' errors') ;
17 EXCEPTION
18   WHEN OTHERS THEN
19    RAISE;
20 END proc_uniqtest;
21 /
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SQL> SELECT STUDENT_ID,ORA_ERR_MESG$ FROM dmlerrlog_uniqtest;
STUDENT_ID                     ORA_ERR_MESG$
1002                           ORA-00001: unique constraint (
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1000                           ORA-00001: unique constraint (
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Removing matrix column by Unique ID

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