Java中的executeQuery（）可以运行嵌套查询吗？

Question

jdbc中的executeQuery（）可以运行嵌套查询吗？

Statement stmt = conn.createStatement（）;ResultSet rs = stmt.executeQuery（sql）;

sql就像：

SELECT * FROM x WHERE
result IN (SELECT result FROM y WHERE cause = 'xyz')

抛出异常

Answer 1

进行空检查

SELECT * FROM x WHERE
result IN (SELECT result FROM y WHERE cause = 'xyz' and result is not null)