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Posted to issues@calcite.apache.org by "xuqianjin (JIRA)" <ji...@apache.org> on 2019/01/21 02:32:00 UTC

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

xuqianjin created CALCITE-2791:
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             Summary: 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


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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