05 2024 档案

[SQL DRIVEN] GetExistingLocalJoinPath
摘要：The following sql statements will trigger calling function GetExistingLocalJoinPath. setup CREATE EXTENSION postgres_fdw; CREATE SERVER foreign_server 阅读全文

posted @ 2024-05-29 20:03 winter-loo 阅读(1) 评论(0) 推荐(0) 编辑

[code notes] check_agg_arguments
摘要：The SQL select sum(sum(a)) from myt1 group by a; This note focuses only on sum(sum(a)) and it's about how postgres rejects the sql above. Notes sum(su 阅读全文

posted @ 2024-05-11 20:25 winter-loo 阅读(6) 评论(0) 推荐(0) 编辑

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