最近对项目做了一个比较大的架构调整, 某个dev分支的一个单元测试数据乱入到stabl……
via https://stackoverflow.com/a/2611745
total count 1 2 3 4 5 6 7 SELECT sum(reltuples) FROM pg_class C LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace) WHERE nspname NOT IN ('pg_catalog', 'information_schema') AND relkind='r'; summary details 1 2 3 4 5 6 7 8 SELECT nspname AS schemaname,relname,reltuples FROM pg_class C LEFT JOIN pg_namespace N ON (N.
用gunicorn启动一个tornado服务时报了个错: 1 2 3 4 5 6 7 8 9 [ERROR] [MainThread] (http1connection:67) Uncaught exception……
起pg的时候报了这么个错 1 2 3 4 5 6 7 8 pg_ctl: another server might be running; trying to start server anyway dyld: Library not loaded: /usr/local/opt/icu4c/lib/libicui18n.67.dylib Referenced from: /usr/local/Cellar/postgresql/13.1/bin/postgres Reason: image not……
via https://stackoverflow.com/a/5215028
So I could not find any examples in the SQLAlchemy documentation, but I found these functions:
count() over() label() And I managed to combine them to produce exactly the result I was looking for:
from sqlalchemy import func
query = session.