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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-9849" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-62fa2b95-98f2-40d9-99b9-b241b9e12e78" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-9849" style="color: #3b73af; text-decoration: none">HHH-9849</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-9849" style="color: #3b73af; text-decoration: none">Duplicate column name for mixed case column name on schema update (mysql,linux)</a> </span>
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Affects Versions:
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5.0.0.CR1
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hibernate-core
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Created:
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04/Jun/2015 23:09 PM
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Mariab 10.0.18, Arch Linux, Java 8 64bit, Mysql JDBC driver 5.1.35
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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="trongducdinh" id="email_trongducdinh" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=trongducdinh" style="color:#6c797f;; color: #3b73af; text-decoration: none">Trong Dinh</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I have a Mysql duplicate column name exception after moving to Hibernate 5 from 4 when HBM2DDL_AUTO is set to "update". It seems to cause exceptions with various combination of mixed case column name (with @Column for example) and on linux (case sensitive) but not on Windows. I have this made up code to test one particular case. </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">
<div class="codeContent panelContent" style="padding: 9px 12px">
<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> java.sql.SQLException;
<span class="code-keyword" style="color: #000091">import</span> javax.persistence.Column;
<span class="code-keyword" style="color: #000091">import</span> javax.persistence.Entity;
<span class="code-keyword" style="color: #000091">import</span> javax.persistence.Id;
<span class="code-keyword" style="color: #000091">import</span> org.hibernate.boot.MetadataSources;
<span class="code-keyword" style="color: #000091">import</span> org.hibernate.boot.registry.StandardServiceRegistryBuilder;
<span class="code-keyword" style="color: #000091">import</span> org.hibernate.boot.spi.MetadataImplementor;
<span class="code-keyword" style="color: #000091">import</span> org.hibernate.cfg.Environment;
<span class="code-keyword" style="color: #000091">import</span> org.hibernate.tool.hbm2ddl.SchemaUpdate;
<span class="code-keyword" style="color: #000091">import</span> com.mysql.jdbc.jdbc2.optional.MysqlDataSource;
@Entity
class My {
@Id
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">int</span> getId() {
<span class="code-keyword" style="color: #000091">return</span> 0;
}
@Column(name=<span class="code-quote" style="color: #009100">"Ul"</span>)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">int</span> getValue() {
<span class="code-keyword" style="color: #000091">return</span> 0;
}
<span class="code-keyword" style="color: #000091">public</span> void setId(<span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">int</span> _id) {
}
<span class="code-keyword" style="color: #000091">public</span> void setValue(<span class="code-object" style="color: #910091">int</span> value) {
}
}
<span class="code-keyword" style="color: #000091">public</span> class Test {
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">static</span> void main(<span class="code-object" style="color: #910091">String</span>[] args) <span class="code-keyword" style="color: #000091">throws</span> SQLException {
MysqlDataSource ds = <span class="code-keyword" style="color: #000091">new</span> MysqlDataSource();
ds.setUrl(<span class="code-quote" style="color: #009100">"jdbc:mysql:<span class="code-comment" style="color: #808080">//192.168.1.6/test2?user=root"</span>);
</span> <span class="code-keyword" style="color: #000091">new</span> SchemaUpdate((MetadataImplementor) <span class="code-keyword" style="color: #000091">new</span> MetadataSources(<span class="code-keyword" style="color: #000091">new</span> StandardServiceRegistryBuilder()
.applySetting(Environment.DATASOURCE, ds).build())
.addAnnotatedClass( My.class )
.buildMetadata()).execute(<span class="code-keyword" style="color: #000091">true</span>, <span class="code-keyword" style="color: #000091">true</span>);
}
}
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Output on run with no existing table</p>
<div class="preformatted 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">
<div class="preformattedContent panelContent" style="padding: 9px 12px">
<pre style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal; white-space: pre; word-break: normal; word-wrap: break-word; word-break: break-word; white-space: pre-wrap">create table My (id integer not null, Ul integer, primary key (id))
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Output on run with existing table </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">
<div class="codeContent panelContent" style="padding: 9px 12px">
<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
alter table My add column Ul integer
Exception in thread <span class="code-quote" style="color: #009100">"main"</span> org.hibernate.tool.schema.spi.SchemaManagementException: Unable to execute schema management to JDBC target [alter table My add column Ul integer]
at org.hibernate.tool.schema.internal.TargetDatabaseImpl.accept(TargetDatabaseImpl.java:58)
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applySqlString(SchemaMigratorImpl.java:332)
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applySqlStrings(SchemaMigratorImpl.java:350)
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.migrateTable(SchemaMigratorImpl.java:159)
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigrationToTargets(SchemaMigratorImpl.java:101)
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigration(SchemaMigratorImpl.java:59)
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:129)
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:97)
at Test.main(Test.java:41)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Duplicate column name 'Ul'
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:389)
at com.mysql.jdbc.Util.getInstance(Util.java:372)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:980)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3835)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3771)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2435)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2582)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2531)
at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1618)
at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1549)
at org.hibernate.tool.schema.internal.TargetDatabaseImpl.accept(TargetDatabaseImpl.java:55)
... 8 more
</pre>
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