| 类型: | bool |
| 默认: | on |
| 上下文: | user |
| 重新开始: | false |
| 以来: | 11 |
允许或禁止查询规划器对并行哈希使用哈希连接计划类型。如果哈希连接计划也没有启用，这个参数没有效果。默认值是on。
在 StackOverflow
- Geoserver WFS + PostgreSQL with large table impossibly slow
- Why does "explain analyzing" this query fnish fast (showing a parallel plan), while running the actual query without "explain analyze" doesn't?
- PostgreSQL 13 sometimes works but sometimes huge execution time
- Postgresql sequential scan slow performance on 500 million rows
- Why are these query plans so different?