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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HHH" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-9384" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-7b7c75e8-153b-46fe-bdf4-85bddcd85d08" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-9384" style="color: #3b73af; text-decoration: none">HHH-9384</a>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://hibernate.atlassian.net/browse/HHH-9384" style="color: #3b73af; text-decoration: none">hbm2ddl.auto=update creates wrong sql statements for @Column(unique = true)</a> </span>
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Issue Type:
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<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-static-bug-7b7c75e8-153b-46fe-bdf4-85bddcd85d08" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /> Bug
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Affects Versions:
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4.3.6
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Assignee:
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Unassigned
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Components:
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core
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Created:
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09/Sep/2014 05:34 AM
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Environment:
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Hibernate 4.3.6.Final <br /> mysql Ver 14.14 Distrib 5.5.38, for debian-linux-gnu (x86_64) using readline 6.3
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Labels:
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core
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Priority:
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<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-static-major-c3c03d97-807d-417c-8beb-d1998fc4365b" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom" /> Major
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Reporter:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="RomanLazarev" id="email_RomanLazarev" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=RomanLazarev" style="color:#6c797f;; color: #3b73af; text-decoration: none">Roman Lazarev</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">In Spring app, for class</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">import</span> javax.persistence.*;
@Entity
@Table(name=<span class="code-quote" style="color: #009100">"siteroles"</span>)
<span class="code-keyword" style="color: #000091">public</span> class CRole {
@Id
@GeneratedValue
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">int</span> id;
@Column(unique = <span class="code-keyword" style="color: #000091">true</span>)
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">String</span> name;
@OneToMany(targetEntity = CUser.class, mappedBy = <span class="code-quote" style="color: #009100">"role"</span>, cascade = CascadeType.ALL)
<span class="code-keyword" style="color: #000091">private</span> List<CUser> usersOfThisRole;
/* getters, setters */
}
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">with</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
hibernate.hbm2ddl.auto=update
hibernate.dialect=org.hibernate.dialect.MySQL5Dialect (or MySQLDialect)
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Hibernate generates Sql stateements, some of which are:</p>
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DEBUG: org.hibernate.tool.hbm2ddl.SchemaUpdate - create table siteroles (id integer not <span class="code-keyword" style="color: #000091">null</span> auto_increment, name varchar(255), primary key (id))
DEBUG: org.hibernate.tool.hbm2ddl.SchemaUpdate - alter table siteroles drop constraint UK_2jiev2kodqdnapqwexhhu2c8t
DEBUG: org.hibernate.tool.hbm2ddl.SchemaUpdate - alter table siteroles add constraint UK_2jiev2kodqdnapqwexhhu2c8t unique (name)
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Which I use to create Sql-migration-files (with FlyWay). But turns out that </p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
alter table siteroles drop constraint UK_2jiev2kodqdnapqwexhhu2c8t
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">doesn't work:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version <span class="code-keyword" style="color: #000091">for</span> the right syntax to use near 'constraint UK_2jiev2kodqdnapqwexhhu2c8t' at line 1
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0"><em>When Hibernate runs sql statements itself, I see no errors</em> and web application runs, db gets updated, constraint gets created (by next lines probably), but when I run them manually I get error described above, what says that SQL statement is wrong anyway.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Also "alter table drop constraint" is absent in official documentation to MySQL: <a href="http://dev.mysql.com/doc/refman/4.1/en/alter-table.html" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">http://dev.mysql.com/doc/refman/4.1/en/alter-table.html</a>.</p>
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