[英]Entity Framework Core postgresql Array Type Mapping not working
I have a strange problem, maybe it is something that I'm missing out, but I have the following LINQ Lambda query:我有一个奇怪的问题,也许这是我遗漏的问题,但我有以下 LINQ Lambda 查询:
var ss = ctx.ShipZones.SelectMany(
z => ctx.ShipDecks,
(z, d) =>
new
{
Zone = z.ZIndex,
Deck = d.DIndex,
Value = ctx.Tags
.AsExpandable()
.Include(s => s.TagSettings.Device.System)
.Where(s =>
s.TagSettings.TagTypeId == 171
&& s.TagSettings.Device.System.Id == z.Id
&& s.TagSettings.Device.ControlArea.Contains(d.Id)
)
.Average(s => s.Value)
}
).ToList();
According to this article, this should be translated to this:根据这篇文章,这应该翻译成这样:
SELECT z.z_index AS "Zone", d.d_index AS "Deck", (
SELECT AVG(t.value)
FROM tags_current_data AS t
INNER JOIN tags_settings AS t0 ON t.tag_id = t0.id
INNER JOIN systems_devices AS s ON t0.device_id = s.id
INNER JOIN systems AS s0 ON s.system_id = s0.id
WHERE ((t0.tag_type_id = 171) AND (s0.id = z.id)) AND (d.id = ANY(s.control_area))) AS "Value"
FROM zones AS z
CROSS JOIN decks AS d
But somehow, the translated query is like this:但不知何故,翻译后的查询是这样的:
SELECT z.z_index AS "Zone", d.d_index AS "Deck", (
SELECT AVG(t.value)
FROM tags_current_data AS t
INNER JOIN tags_settings AS t0 ON t.tag_id = t0.id
INNER JOIN systems_devices AS s ON t0.device_id = s.id
INNER JOIN systems AS s0 ON s.system_id = s0.id
WHERE ((t0.tag_type_id = 171) AND (s0.id = z.id)) AND (TRUE = FALSE)) AS "Value"
FROM zones AS z
CROSS JOIN decks AS d
The difference is where it should be d.id = ANY(s.control_area)
it is TRUE = FALSE
不同之处在于它应该在d.id = ANY(s.control_area)
它是TRUE = FALSE
Can anyone tell me what am I doing wrong?谁能告诉我我做错了什么?
Thanks in advance,提前致谢,
Julian Dimitrov朱利安·迪米特洛夫
I was able to solve my problem.我能够解决我的问题。 It is in this issue.这是在这个问题。
Basically:基本上:
It was in the entities configuration.它在实体配置中。 The
ControlArea
property in theDevice
entity was of typeList<long>
.Device
实体中的ControlArea
属性是List<long>
类型。 When I changed it tolong[]
(long array) it worked!当我将其更改为long[]
(长数组)时,它起作用了!
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