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https://issues.apache.org/jira/browse/CALCITE-2791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16760465#comment-16760465
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Hongze Zhang edited comment on CALCITE-2791 at 2/5/19 5:16 AM:
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[~x1q1j1] I've made some comments on the PR based on the discussion from mail.
I think the patch looks good after fixing the remaining issues.
P.S. Can you make the description of this issue more understandable? I don't
quite get the relation between priority and type of a JSON value.
was (Author: zhztheplayer):
[~x1q1j1] I've made some comments on the PR based on the discussion from mail.
I think the patch looks good after fixing the remaining issues.
> 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: xuqianjin
> Assignee: Julian Hyde
> Priority: Major
>
> 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
> INTEGER
> DOUBLE
> NULL
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