擅长:python、mysql、java
<p>在Postgresql中,并发索引是<a href="https://www.postgresql.org/docs/9.1/static/sql-createindex.html#SQL-CREATEINDEX-CONCURRENTLY" rel="nofollow">allowed</a>,而Alembic <a href="https://groups.google.com/d/msg/sqlalchemy-alembic/I2AAEUdF2dQ/MsWDH-d7BwAJ" rel="nofollow">not</a>支持并发操作,一次只能运行一个进程。在</p>