Postgresql 将 JSONB 对象更新为数组
Postgresql update JSONB object to array
我不知道为什么,但可能 PHP 将我的一些数据保存为对象,一些保存为数组。我的 table 看起来像:
seller_info_address Table:
ID (INT) | address (JSONB) |
------------+--------------------------------------------------|
1 | {"addressLines":{"0":"Technology Park",...},...} |
2 | {"addressLines":["Technology Park",...],...} |
一些地址线是对象:
{
"addressLines": {
"0": "Technology Park",
"1": "Blanchard Road",
"3": "Dublin",
"4": "2"
},
"companyName": "...",
"emailAddress": [],
"...": "..."
}
一些地址行是数组:
{
"addressLines": [
"Technology Park",
"Blanchard Road",
"Dublin",
"2"
],
"companyName": "...",
"emailAddress": [],
"...": "..."
}
我想用 SQL 查询来均衡数据,但我不确定该怎么做。所有 addressLines
作为对象保留的都应更新为数组形式。
感谢帮助,谢谢!
您可以使用以下方法将对象转换为数组:
select id, (select jsonb_agg(e.val order by e.key::int)
from jsonb_each(sia.address -> 'addressLines') as e(key,val))
from seller_info_address sia
where jsonb_typeof(address -> 'addressLines') = 'object'
where 条件确保我们只对不是数组的地址行执行此操作。
所使用的聚合也可以在 UPDATE 语句中使用:
update seller_info_address
set address = jsonb_set(address, '{addressLines}',
(select jsonb_agg(e.val order by e.key::int)
from jsonb_each(address -> 'addressLines') as e(key,val))
)
where jsonb_typeof(address -> 'addressLines') = 'object';
好的,我现在自己找到了解决办法。绝对不是最 eloquent 的解决方案。我敢肯定有更好、更高效的方法,但它确实有效...
DROP FUNCTION update_address_object_to_array(id INTEGER);
CREATE OR REPLACE FUNCTION
update_address_object_to_array(id INTEGER)
RETURNS VOID AS
$UPDATE_ADDRESS_OBJECT_TO_ARRAY$
BEGIN
UPDATE seller_info_address
SET address = jsonb_set(address, '{addressLines}', (
SELECT CASE
WHEN jsonb_agg(addressLines) IS NOT NULL THEN jsonb_agg(addressLines)
ELSE '[]'
END
FROM seller_info_address sia,
jsonb_each(address #> '{addressLines}') as t(key, addressLines)
WHERE jsonb_typeof(sia.address -> 'addressLines') = 'object'
AND seller_info_id = update_address_object_to_array.id
), true)
WHERE seller_info_id = update_address_object_to_array.id
AND jsonb_typeof(address -> 'addressLines') = 'object';
END
$UPDATE_ADDRESS_OBJECT_TO_ARRAY$
LANGUAGE 'plpgsql';
SELECT update_address_object_to_array(sia.seller_info_id)
FROM seller_info_address sia
WHERE jsonb_typeof(address -> 'addressLines') = 'object';
内部的 SELECT 使用 jsonb_each
获取 addressLines
对象中的所有行,然后使用 jsonb_agg
将它们聚合到一个数组中。条件表达式是为了防止空情况。
然后将结果通过 jsonb_set
存储在 UPDATE 中到 json 中的所需位置。 WHERES 应该是 self-explanatory.
我不知道为什么,但可能 PHP 将我的一些数据保存为对象,一些保存为数组。我的 table 看起来像:
seller_info_address Table:
ID (INT) | address (JSONB) |
------------+--------------------------------------------------|
1 | {"addressLines":{"0":"Technology Park",...},...} |
2 | {"addressLines":["Technology Park",...],...} |
一些地址线是对象:
{
"addressLines": {
"0": "Technology Park",
"1": "Blanchard Road",
"3": "Dublin",
"4": "2"
},
"companyName": "...",
"emailAddress": [],
"...": "..."
}
一些地址行是数组:
{
"addressLines": [
"Technology Park",
"Blanchard Road",
"Dublin",
"2"
],
"companyName": "...",
"emailAddress": [],
"...": "..."
}
我想用 SQL 查询来均衡数据,但我不确定该怎么做。所有 addressLines
作为对象保留的都应更新为数组形式。
感谢帮助,谢谢!
您可以使用以下方法将对象转换为数组:
select id, (select jsonb_agg(e.val order by e.key::int)
from jsonb_each(sia.address -> 'addressLines') as e(key,val))
from seller_info_address sia
where jsonb_typeof(address -> 'addressLines') = 'object'
where 条件确保我们只对不是数组的地址行执行此操作。
所使用的聚合也可以在 UPDATE 语句中使用:
update seller_info_address
set address = jsonb_set(address, '{addressLines}',
(select jsonb_agg(e.val order by e.key::int)
from jsonb_each(address -> 'addressLines') as e(key,val))
)
where jsonb_typeof(address -> 'addressLines') = 'object';
好的,我现在自己找到了解决办法。绝对不是最 eloquent 的解决方案。我敢肯定有更好、更高效的方法,但它确实有效...
DROP FUNCTION update_address_object_to_array(id INTEGER);
CREATE OR REPLACE FUNCTION
update_address_object_to_array(id INTEGER)
RETURNS VOID AS
$UPDATE_ADDRESS_OBJECT_TO_ARRAY$
BEGIN
UPDATE seller_info_address
SET address = jsonb_set(address, '{addressLines}', (
SELECT CASE
WHEN jsonb_agg(addressLines) IS NOT NULL THEN jsonb_agg(addressLines)
ELSE '[]'
END
FROM seller_info_address sia,
jsonb_each(address #> '{addressLines}') as t(key, addressLines)
WHERE jsonb_typeof(sia.address -> 'addressLines') = 'object'
AND seller_info_id = update_address_object_to_array.id
), true)
WHERE seller_info_id = update_address_object_to_array.id
AND jsonb_typeof(address -> 'addressLines') = 'object';
END
$UPDATE_ADDRESS_OBJECT_TO_ARRAY$
LANGUAGE 'plpgsql';
SELECT update_address_object_to_array(sia.seller_info_id)
FROM seller_info_address sia
WHERE jsonb_typeof(address -> 'addressLines') = 'object';
内部的 SELECT 使用 jsonb_each
获取 addressLines
对象中的所有行,然后使用 jsonb_agg
将它们聚合到一个数组中。条件表达式是为了防止空情况。
然后将结果通过 jsonb_set
存储在 UPDATE 中到 json 中的所需位置。 WHERES 应该是 self-explanatory.