目录1. 内连接(INNER JOIN)2. 左外连接(LEFT OUTER JOIN)3. 右外连接(RIGHT OUTER JOIN)4. 全外连接(FULL OUTER JOIN)5. 交叉连接(CROSS JOIN)6. 自然连接(NATURAL JOIN)7. 自连接(SELF JOIN)8. 多表连
I have an error ? My pl/Sql Developer says my oracle database cannot find the service descriptor But when I Do a check the listener I get this error.