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PostgreSQL 默认模式顺序和改变

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Jun 07, 2016 pm 05:12 PM

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PostgreSQL有模式（schema）的概念，其实就是在数据库中划分范围，也就是在不同的模式中，可以有同名的表。可以简单理解为文件系

PostgreSQL有模式（schema）的概念，，其实就是在数据库中划分范围，也就是在不同的模式中，可以有同名的表。可以简单理解为文件系统。

常用的默认模式是public。

SHOW search_path；显示现有的模式搜寻顺序，具体的顺序，也可以通过SET search_path TO 'schema_name'来修改顺序。

这样的修改只能在当前连接中有效，如果需要长久生效可以为用户创建一个变量：

ALTER ROLE etl SET search_path=trade;

官方建议是这样的：在管理员创建一个具体数据库后，应该为所有可以连接到该数据库的用户分别创建一个与用户名相同的模式，然后，将search_path设置为"$user"，

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