[英]python peewee dynamically or + and clauses
I'd like to do a and
clause with two lists of multiple or
clauses from the same table .我想做一个and
子句,其中包含来自同一个 table 的两个多个or
子句列表。
The problem with the following code is, that the query result is empty.以下代码的问题是,查询结果为空。 If I just select 'indices' or 'brokers', the result is fine.如果我只选择“指数”或“经纪人”,结果很好。
...
query = query.join(StockGroupTicker, on=(Ticker.id == StockGroupTicker.ticker))
# indices
if "indices" in filter:
where_indices = []
for f in filter["indices"]:
where_indices.append(StockGroupTicker.stock_index == int(f))
if len(where_indices):
query = query.where(peewee.reduce(peewee.operator.or_, where_indices))
# broker
if "brokers" in filter:
where_broker = []
for f in filter["brokers"]:
where_broker.append(StockGroupTicker.stock_index == int(f))
if len(where_broker):
query = query.where(peewee.reduce(peewee.operator.or_, where_broker))
return query.distinct()
SQL Querie (update) SQL查询(更新)
# index and brocker
SELECT
DISTINCT `t1`.`id`,
`t1`.`symbol`,
`t1`.`type`,
`t1`.`name`,
`t1`.`sector`,
`t1`.`region`,
`t1`.`primary_exchange`,
`t1`.`currency`,
`t1`.`score`,
`t1`.`last_price`,
`t1`.`last_price_date`,
`t1`.`last_price_check`,
`t1`.`last_stock_split`,
`t1`.`next_earning`,
`t1`.`last_earnings_update`,
`t1`.`disused`,
`t1`.`source`,
`t1`.`source_intraday`,
`t1`.`created`,
`t1`.`modified`,
`t2`.`invest_score` AS `invest_score`
FROM
`ticker` AS `t1`
INNER JOIN `tickerstats` AS `t2` ON
(`t1`.`id` = `t2`.`ticker_id`)
INNER JOIN `stockgroupticker` AS `t3` ON
(`t1`.`id` = `t3`.`ticker_id`)
WHERE
(((((`t1`.`disused` IS NULL)
OR (`t1`.`disused` = 0))
AND (`t2`.`volume_mean_5` > 10000.0))
AND (`t3`.`stock_index_id` = 1))
AND (`t3`.`stock_index_id` = 10)
)
Thanks to @coleifer, the peewee solution is quite simple.感谢@coleifer,peewee 解决方案非常简单。 I had to use an alias
.我不得不使用alias
。
if "indices" in filter and filter["indices"]:
query = query.join(
StockGroupTicker, peewee.JOIN.INNER, on=(Ticker.id == StockGroupTicker.ticker)
)
where_indices = []
for f in filter["indices"]:
where_indices.append(StockGroupTicker.stock_index == int(f))
if len(where_indices):
query = query.where(peewee.reduce(peewee.operator.or_, where_indices))
if "brokers" in filter and filter["brokers"]:
BrokerGroupTicker = StockGroupTicker.alias()
query = query.join(
BrokerGroupTicker, peewee.JOIN.INNER, on=(Ticker.id == BrokerGroupTicker.ticker)
)
where_broker = []
for f in filter["brokers"]:
where_broker.append(BrokerGroupTicker.stock_index == int(f))
if len(where_broker):
query = query.where(peewee.reduce(peewee.operator.or_, where_broker))
return query.distinct()
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