我的代码被MyClass()中的MyClass()方法卡住了。def csv_to_postgres(self): ...() as cursor:
cursor.execute("SELECT NOT EXISTS (SELECT 1 FROM %s)" % self.to_table_name)当运行它自己的方法时,它工作得很好,即它截断postgres</e
是否可以阻止Phantom读取,或者以其他方式锁定Postgres事务中丢失的行?KEY );SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;同时,在连接2上:BEGIN;SELECT * FROM weather WHERE city = 'a' FOR SHAR
query_ranges(box boxndf, ts timestamp, te timestamp); INSERT INTO query_ranges SELECTsomething;t = clock_timestamp(); SELECT * FROM query_rangesLOOP
select count(*) from data_table where something into