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From "Mike Matrigali (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4677) SYSCS_COMPRESS_TABLE disables unique constraints
Date Fri, 04 Jun 2010 08:04:59 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4677?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mike Matrigali updated DERBY-4677:
----------------------------------


I thought it would fail also, maybe compress is optimized to not do the duplicate checking
on index rebuild since it "knows" that there were no duplicates before.  I would concentrate
on fixing the bugs first.   This behavior is probably not worth changing and we should come
up with some other way to catch the bad duplicates that were inserted. One option would be
a real drop and recreate of the index should find the problem.

To track this down you could compare the code that is in create index to the code that is
in alter table.  I think there is some call back that is used to check duplicates.

> SYSCS_COMPRESS_TABLE disables unique constraints
> ------------------------------------------------
>
>                 Key: DERBY-4677
>                 URL: https://issues.apache.org/jira/browse/DERBY-4677
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.4.1.3, 10.4.2.0, 10.4.2.1, 10.5.1.1, 10.5.2.0, 10.5.3.0, 10.6.1.0
>         Environment: Output of sysinfo:
> ------------------ Java Information ------------------
> Java Version:    1.6.0_20
> Java Vendor:     Sun Microsystems Inc.
> Java home:       C:\Program Files (x86)\Java\jre6
> Java classpath:  .;C:\Program Files (x86)\Java\jre6\lib\ext\QTJava.zip;C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\bin\../lib/derby.jar;C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\bin\../lib/derbynet.jar;C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\bin\../lib/derbyclient.jar;C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\bin\../lib/derbytools.jar
> OS name:         Windows 7
> OS architecture: x86
> OS version:      6.1
> Java user name:  bmason
> Java user home:  C:\Users\BMASON
> Java user dir:   C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\bin
> java.specification.name: Java Platform API Specification
> java.specification.version: 1.6
> java.runtime.version: 1.6.0_20-b02
> --------- Derby Information --------
> JRE - JDBC: Java SE 6 - JDBC 4.0
> [C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\lib\derby.jar] 10.6.1.0 - (938214)
> [C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\lib\derbytools.jar] 10.6.1.0 - (938214)
> [C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\lib\derbynet.jar] 10.6.1.0 - (938214)
> [C:\Users\BMASON\Sandbox\libs\db-derby-10.6.1.0-bin\lib\derbyclient.jar] 10.6.1.0 - (938214)
> ------------------------------------------------------
> ----------------- Locale Information -----------------
> Current Locale :  [English/New Zealand [en_NZ]]
> Found support for locale: [cs]
> 	 version: 10.6.1.0 - (938214)
> Found support for locale: [de_DE]
> 	 version: 10.6.1.0 - (938214)
> Found support for locale: [es]
> 	 version: 10.6.1.0 - (938214)
> Found support for locale: [fr]
> 	 version: 10.6.1.0 - (938214)
> Found support for locale: [hu]
> 	 version: 10.6.1.0 - (938214)
> Found support for locale: [it]
> 	 version: 10.6.1.0 - (938214)
> Found support for locale: [ja_JP]
> 	 version: 10.6.1.0 - (938214)
> Found support for locale: [ko_KR]
> 	 version: 10.6.1.0 - (938214)
> Found support for locale: [pl]
> 	 version: 10.6.1.0 - (938214)
> Found support for locale: [pt_BR]
> 	 version: 10.6.1.0 - (938214)
> Found support for locale: [ru]
> 	 version: 10.6.1.0 - (938214)
> Found support for locale: [zh_CN]
> 	 version: 10.6.1.0 - (938214)
> Found support for locale: [zh_TW]
> 	 version: 10.6.1.0 - (938214)
> ------------------------------------------------------
>            Reporter: Brett Mason
>            Assignee: Mamta A. Satoor
>
> It appears that running SYSCS_UTIL.SYSCS_COMPRESS_TABLE on a table with a null-able unique
constraint will disable the unique constraint. The script
> below should reproduce the problem. The expected behaviour is for the second insert to
fail due to the unique constraint but instead it is allowed. The second insert will fail as
expected if either the call to SYSCS_COMPRESS_TABLE is skipped or if the column is declared
NOT NULL.
> I have reproduced the problem using embedded Derby 10.5.1.1, 10.5.3.0 and 10.6.1.0 using
ij.
> CREATE TABLE TABLE1(NAME1 INT UNIQUE);
> CALL SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'TABLE1', 1);
> INSERT INTO TABLE1(NAME1) VALUES(1);
> INSERT INTO TABLE1(NAME1) VALUES(1);
> SELECT * FROM TABLE1;
> DROP TABLE TABLE1;

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