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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