摘要:
with temp as (select to_char(jsrq , 'yyyymm') as month, sum(zfy ) as num from hip_mz_ys a, JCXX_JG b, jcxx_ks c, jcxx_ry d where a.jg_id = b.yljgdm an 阅读全文
posted @ 2019-04-19 17:11
HoverChen
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摘要:
--创建数据链路create database link linkname --数据链路的名字connect to user identified by password using '127.0.0.1:1521/orcl';--数据库地址:端口/数据库实例 阅读全文
posted @ 2019-04-19 17:09
HoverChen
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