[ 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 Data: {"a":[10,true]} SELECT JSON_TYPE(v) AS c1, JSON_TYPE(v.a) AS c2, JSON_TYPE(v.a[0]) AS c3, JSON_TYPE(v.a[1]) AS c4 FROM VALUES ('{"a": [10, true]}') AS t(v); 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 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 > Components: core > Reporter: Forward Xu > Assignee: Julian Hyde > Priority: Major > Labels: pull-request-available > Time Spent: 10m > 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 Data: > {"a":[10,true]} > SELECT JSON_TYPE(v) AS c1, > JSON_TYPE(v.a) AS c2, > JSON_TYPE(v.a[0]) AS c3, > JSON_TYPE(v.a[1]) AS c4 > FROM VALUES ('{"a": [10, true]}') AS t(v); > c1 c2 c3 c4 > ======= ======= ======= ======= > OBJECT ARRAY INTEGER BOOLEAN -- This message was sent by Atlassian JIRA (v7.6.3#76005)