Bugs item #2075180, was opened at 2008-08-26 06:49
Message generated for change (Comment added) made by nielsnes
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Category: SQL/Core
Group: MonetDB5 5.6
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Qian Qiao (drizzlerain)
Assigned to: Niels Nes (nielsnes)
Summary: the unique column can't insert more than 1 row with null 

Initial Comment:
OS:RedHat Linux AS 4
GCC: 3.4.6

1.setup:
CREATE TABLE FEAT16 (
  EMPNUM INT PRIMARY KEY,
  PNUM   INT UNIQUE);

2.execute:
INSERT INTO FEAT16 VALUES (3, NULL);
INSERT INTO FEAT16 VALUES (4, NULL);

3.result:
The first INSERT operation is OK,but the second INSERT operation is failed:
!SQLException:assert:INSERT INTO: UNIQUE constraint 'feat16.feat16_pnum_unique' 
violated

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>Comment By: Niels Nes (nielsnes)
Date: 2008-08-26 13:34

Message:
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added  insert_into_unique_column.SF-2075180.sql 
indeed we should allow for multiple NULL's 

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Comment By: Stefan Manegold (stmane)
Date: 2008-08-26 07:19

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*Possibly* related to the NIL semantics issue reported in
[ 1960373 ] kunion and nil
http://sourceforge.net/tracker/index.php?func=detail&aid=1960373&group_id=56967&atid=482468


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