您可以使用服务器端游标。
cur = conn.cursor('cursor-name') # server side cursor
cur.itersize = 10000 # how much records to buffer on a client
cur.execute("SELECT * FROM mytable;")
Psycopg2在大型选择查询上用尽了内存
您可以使用服务器端游标。
cur = conn.cursor('cursor-name') # server side cursor
cur.itersize = 10000 # how much records to buffer on a client
cur.execute("SELECT * FROM mytable;")