protected SqlString GenerateIdInsertSelect(IQueryable persister, string tableAlias, IASTNode whereClause) { var select = new SqlSelectBuilder(Factory); SelectFragment selectFragment = new SelectFragment(Factory.Dialect) .AddColumns(tableAlias, persister.IdentifierColumnNames, persister.IdentifierColumnNames); select.SetSelectClause(selectFragment.ToFragmentString().Substring(2)); string rootTableName = persister.TableName; SqlString fromJoinFragment = persister.FromJoinFragment(tableAlias, true, false); select.SetFromClause(rootTableName + " " + tableAlias + fromJoinFragment); var whereJoinFragment = GetWhereJoinFragment(persister, tableAlias); SqlString userWhereClause = SqlString.Empty; if (whereClause.ChildCount != 0) { // If a where clause was specified in the update/delete query, use it to limit the // returned ids here... try { var nodes = new CommonTreeNodeStream(whereClause); var gen = new SqlGenerator(Factory, nodes); gen.whereClause(); userWhereClause = gen.GetSQL().Substring(7); } catch (RecognitionException e) { throw new HibernateException("Unable to generate id select for DML operation", e); } if (whereJoinFragment.Length > 0) { whereJoinFragment = whereJoinFragment.Append(" and "); } } select.SetWhereClause(whereJoinFragment + userWhereClause); var insert = new InsertSelect(); if (Factory.Settings.IsCommentsEnabled) { insert.SetComment("insert-select for " + persister.EntityName + " ids"); } insert.SetTableName(persister.TemporaryIdTableName); insert.SetSelect(select); return(insert.ToSqlString()); }