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<td class="page-title-pattern-first-line " style="padding: 0; 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-11178" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-e9469cb9-3a15-4665-a0fb-3b6931145748" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-11178" style="color: #3b73af; text-decoration: none">HHH-11178</a> </td>
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<td style="vertical-align: top;; padding: 0; 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-11178" style="color: #3b73af; text-decoration: none">problem with varchar(256) on mysql</a> </span> </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Issue Type:</th>
<td class="has-icon" style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-avatar-e9469cb9-3a15-4665-a0fb-3b6931145748" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Affects Versions:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 5.2.3 </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Assignee:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> Unassigned </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> hibernate-core </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Created:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 17/Oct/2016 05:23 AM </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Environment:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> MySQL 8.0 and MySQL 5.7 using jdbc driver 5.x and 6.x versions. <br> MySQL57InnoDBDialect </td>
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<td class="has-icon" style="padding: 0; 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-0efa9e29-a8c4-49b6-97a1-40ac2642ca93" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom"> Major </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Reporter:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="chammer" id="email_chammer" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=chammer" style="color:#6c797f;; color: #3b73af; text-decoration: none">Carsten Hammer</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0; margin-top: 0">MySQL does not support varchar fields with a length >=256. (varchar(256))</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">see <a href="http://dev.mysql.com/doc/refman/8.0/en/char.html" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">http://dev.mysql.com/doc/refman/8.0/en/char.html</a></p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Up to varchar(255) everything is fine but then problems start. The hibernate SchemaExport silently ignores the problem if haltonerror=false. If haltonerror=true it fails long before the real problem comes up while droping missing constraints. <br> I am not sure if it is really fair to blame hibernate or the hibernate dialect for mysqls behavior. So classification as "bug" might be wrong.. </p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Would it be possible to introduce a way to switch automatically to a different datatype like text for varchar 256 and greater in the schema generation? Or would it just be the best solution to switch to mysql type "text" in general instead of "varchar" in the dialect?</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">see <a href="http://dev.mysql.com/doc/refman/8.0/en/blob.html" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">http://dev.mysql.com/doc/refman/8.0/en/blob.html</a></p> </td>
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