[
https://issues.apache.org/jira/browse/CALCITE-2791?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Forward Xu updated CALCITE-2791:
--------------------------------
Description:
The data in json can be =, <, <=, >, >=, <>,! =, and <=>. But the data types in
json can be diverse, so when you compare different types, you have a priority,
and the high priority is greater than the low priority (you can view the types
with the JSON_TYPE() function). The priorities are as follows:
BOOLEAN,ARRAY,OBJECT,STRING,INTEGE,DOUBLE,NULL
Example Sql::
{"a":[10,true]}
SELECT JSON_TYPE(v) AS c1
,JSON_TYPE(JSON_VALUE(v, 'lax $.b' ERROR ON ERROR)) AS c2
,JSON_TYPE(JSON_VALUE(v, 'strict $.a[0]' ERROR ON ERROR)) AS c3
,JSON_TYPE(JSON_VALUE(v, 'strict $.a[1]' ERROR ON ERROR)) AS c4
FROM (VALUES ('{"a": [10, true],"b": "[10, true]"}')) AS t(v)
limit 10;
Result:
c1 c2 c3 c4
======= ======= ======= =======
OBJECT ARRAY INTEGER BOOLEAN
was:
The data in json can be =, <, <=, >, >=, <>,! =, and <=>. But the data types in
json can be diverse, so when you compare different types, you have a priority,
and the high priority is greater than the low priority (you can view the types
with the JSON_TYPE() function). The priorities are as follows:
BOOLEAN,ARRAY,OBJECT,STRING,INTEGE,DOUBLE,NULL
Example Data:
{"a":[10,true]}
SELECT JSON_TYPE(v) AS c1
,JSON_TYPE(JSON_VALUE(v, 'lax $.b' ERROR ON ERROR)) AS c2
,JSON_TYPE(JSON_VALUE(v, 'strict $.a[0]' ERROR ON ERROR)) AS c3
,JSON_TYPE(JSON_VALUE(v, 'strict $.a[1]' ERROR ON ERROR)) AS c4
FROM (VALUES ('\{"a": [10, true],"b": "[10, true]"}')) AS t(v)
limit 10;
c1 c2 c3 c4
======= ======= ======= =======
OBJECT ARRAY INTEGER BOOLEAN
> Add the JSON_TYPE function
> --------------------------
>
> Key: CALCITE-2791
> URL: https://issues.apache.org/jira/browse/CALCITE-2791
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Forward Xu
> Priority: Major
> Labels: pull-request-available
> Attachments: image-2019-02-19-12-24-10-200.png
>
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> The data in json can be =, <, <=, >, >=, <>,! =, and <=>. But the data types
> in json can be diverse, so when you compare different types, you have a
> priority, and the high priority is greater than the low priority (you can
> view the types with the JSON_TYPE() function). The priorities are as follows:
> BOOLEAN,ARRAY,OBJECT,STRING,INTEGE,DOUBLE,NULL
> Example Sql::
> {"a":[10,true]}
> SELECT JSON_TYPE(v) AS c1
> ,JSON_TYPE(JSON_VALUE(v, 'lax $.b' ERROR ON ERROR)) AS c2
> ,JSON_TYPE(JSON_VALUE(v, 'strict $.a[0]' ERROR ON ERROR)) AS c3
> ,JSON_TYPE(JSON_VALUE(v, 'strict $.a[1]' ERROR ON ERROR)) AS c4
> FROM (VALUES ('{"a": [10, true],"b": "[10, true]"}')) AS t(v)
> limit 10;
> Result:
> c1 c2 c3 c4
> ======= ======= ======= =======
> OBJECT ARRAY INTEGER BOOLEAN
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
