吴裕雄 python oracle子查询的用法(3)
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了吴裕雄 python oracle子查询的用法(3),小编现在分享给大家,供广大互联网技能从业者学习和参考。文章包含1261字,纯文字阅读大概需要2分钟。
内容图文
![吴裕雄 python oracle子查询的用法(3)](/upload/InfoBanner/zyjiaocheng/918/538c8846c1604d48913da8e6f602a5c3.jpg)
import cx_Oracle
conn = cx_Oracle.connect("scott/admin@localhost:1521/orcl")
cursor = conn.cursor()
sql = "select * from emp where deptno=(select deptno from dept where dname='%s')" % ('RESEARCH')
cursor.execute(sql)
result = cursor.fetchall()
for row in result:
print(row)
sql = "select * from emp join dept on emp.deptno=dept.deptno where dept.dname='%s'" % ('RESEARCH')
cursor.execute(sql)
result = cursor.fetchall()
for row in result:
print(row)
sql = "select * from emp where sal>(select min(sal) from emp) and sal<(select max(sal) from emp)"
cursor.execute(sql)
result = cursor.fetchall()
for row in result:
print(row)
sql = "select * from emp where deptno in (select deptno from dept where dname<>'%s')" % ('SALES')
cursor.execute(sql)
result = cursor.fetchall()
for row in result:
print(row)
sql = "select * from emp where sal>any(select sal from emp where deptno=10)and deptno<>10"
cursor.execute(sql)
result = cursor.fetchall()
for row in result:
print(row)
sql = "select * from emp where sal>all(select sal from emp where deptno=30)"
cursor.execute(sql)
result = cursor.fetchall()
for row in result:
print(row)
sql = "select * from emp f where sal>(select avg(sal) from emp where job=f.job)"
cursor.execute(sql)
result = cursor.fetchall()
for row in result:
print(row)
内容总结
以上是互联网集市为您收集整理的吴裕雄 python oracle子查询的用法(3)全部内容,希望文章能够帮你解决吴裕雄 python oracle子查询的用法(3)所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错,欢迎将互联网集市网站推荐给程序员好友。
内容备注
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 gblab@vip.qq.com 举报,一经查实,本站将立刻删除。
内容手机端
扫描二维码推送至手机访问。