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Posted to issues@calcite.apache.org by "xuqianjin (JIRA)" <ji...@apache.org> on 2019/01/25 13:42:00 UTC

[jira] [Updated] (CALCITE-2791) Add the JSON_TYPE function

     [ https://issues.apache.org/jira/browse/CALCITE-2791?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

xuqianjin 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:
 BLOB
 BIT
 OPAQUE
 DATETIME
 TIME
 DATE
 BOOLEAN
 ARRAY
 OBJECT
 STRING
 INTEGER,

DOUBLE
 NULL

  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:
BLOB
BIT
OPAQUE
DATETIME
TIME
DATE
BOOLEAN
ARRAY
OBJECT
STRING
INTEGER, DOUBLE
NULL


> Add the JSON_TYPE function
> --------------------------
>
>                 Key: CALCITE-2791
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2791
>             Project: Calcite
>          Issue Type: Improvement
>            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:
>  BLOB
>  BIT
>  OPAQUE
>  DATETIME
>  TIME
>  DATE
>  BOOLEAN
>  ARRAY
>  OBJECT
>  STRING
>  INTEGER,
> DOUBLE
>  NULL



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