github/ebean
4
0
Fork 0
mirror of https://github.com/ebean-orm/ebean.git synced 2026-10-21 17:50:37 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #2532 from FOCONIS/db2/unique_indices_with_null_columns

Browse Source 
DB2 Support for unique indices with null columns
This commit is contained in:
Rob Bygrave
2022-02-01 08:16:43 +13:00
committed by GitHub
parent 0a780523cf f2e04d9fbf
commit 01722b334b
1 changed files with 15 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
ebean-ddl-generator/src/main/java/io/ebeaninternal/dbmigration/ddlgeneration/platform/DB2Ddl.java
+15 -3
View File
@@ -24,10 +24,22 @@ public class DB2Ddl extends PlatformDdl {
public String alterTableAddUniqueConstraint(String tableName, String uqName, String[] columns, String[] nullableColumns) {
if (nullableColumns == null || nullableColumns.length == 0) {
return super.alterTableAddUniqueConstraint(tableName, uqName, columns, nullableColumns);
} else {
// Hmm: Complex workaround: https://www.ibm.com/developerworks/mydeveloperworks/blogs/SQLTips4DB2LUW/entry/unique_where_not_null_indexes26?lang=en
return "-- NOT SUPPORTED " + super.alterTableAddUniqueConstraint(tableName, uqName, columns, nullableColumns);
}
if (uqName == null) {
throw new NullPointerException();
}
StringBuilder sb = new StringBuilder("create unique index ");
sb.append(uqName).append(" on ").append(tableName).append('(');
for (int i = 0; i < columns.length; i++) {
if (i > 0) {
sb.append(",");
}
sb.append(columns[i]);
}
sb.append(") exclude null keys");
return sb.toString();
}
@Override