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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4677) SYSCS_COMPRESS_TABLE disables unique constraints
Date Tue, 22 Jun 2010 11:04:57 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12881165#action_12881165
] 

Knut Anders Hatlen commented on DERBY-4677:
-------------------------------------------

Hi Mamta,

The release note looks good to me. Thanks for writing it. Two small comments:

- I think the summary is supposed to be a one-liner. I suggest that it is changed to "Unique
nullable constraint may be disabled after compress or import operations" and that the details
are moved to the sections below.

- typo: "may find that duplicates rows exist" - duplicates -> duplicate

> 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
>             Fix For: 10.4.2.1, 10.5.3.1, 10.6.1.1, 10.7.0.0
>
>         Attachments: DERBY4677_diff_patch1.txt, DERBY4677_stat_patch1.txt, releaseNote.html,
releaseNote.html
>
>
> 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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