Class.forName("org.sqlite.JDBC");
Connection conn =
DriverManager.getConnection("jdbc:sqlite:userdata.db");
Statement stat = conn.createStatement();
ResultSet rs = stat.executeQuery("SELECT * from table WHERE is_query_processed = 0;");
int rowcount = rs.getRow();
System.out.println("Row count = "+rowcount); // output 1
rs.first(); // This statement generates an exception
为什么会这样？
解决方法
我通常使用的模式如下：
boolean empty = true;
while( rs.next() ) {
// ResultSet processing here
empty = false;
}
if( empty ) {
// Empty result set
}
