[hibernate-issues] [Hibernate-JIRA] Assigned: (HHH-3344) DB2Dialect.getLimitString doesn't work for some queries

DB2Dialect.getLimitString doesn't work for some queries ------------------------------------------------------- Key: HHH-3344 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3344 Project: Hibernate Core Issue Type: Bug Reporter: Damon Horrell Assignee: Strong Liu Priority: Minor If a query uses * but doesn't use a table alias then the modified query created by DB2Dialect.getLimitString is invalid. e.g. select * from mytable becomes select * from ( select rownumber() over() as rownumber_, * from mytable ) as temp_ where rownumber_ <= ? which causes DB2 SQL error: SQLCODE: -104, SQLSTATE: 42601, SQLERRMC: *;ver() as rownumber_,;<select_sublist> I have worked around this for my project by extending DB2Dialect with: public String getLimitString(String sql, boolean hasOffset) { return "select * from ( select rownumber() over() as rownumber_, original_query.* from (" + sql + ") original_query ) as temp_ where rownumber_ <= ?"; } This code will need extending to handle the hasOffset case etc. Real code probably won't be using select * anyway so this probably isn't a big problem. My example allows the user to enter a custom query so I have to handle this situation.