postgresql跨库增删改查
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postgresql使用dblink跨库增删改查的步骤
目录PostgreSQL使用dblink跨库增删改查一、使用步骤1、创建dblink扩展,连接与被连接的两个数据库都要执行下面sql2、跨库查询或增删改3、如果不想每一次都写完整的dblink连接信息,可以先起别名4、补充:myBATis直接[详细]
2023-04-02 08:58 分类:数据库 Why is the exit code 255 instead of -1 in Perl?
开发者_Python百科Why is it that when I shift the exit code, $?, in Perl by eight, I get 255 when I expect it to be -1?The exit status returned by \'wait()\' is a 16-bit value.Of those 16 bits, the hig[详细]
2022-12-28 15:42 分类:问答