im facing a problem that i must update the date format from "YYYY-MM-DD" to "YYYY-MM-DD HH:mm:ss", i want to implement without reindexing. and i found the answer in document: The format setting must have the same setting for fields of the same name in the same index. Its value can be updated on …

How to update the date format of an exist date field with PUT mapping API?

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How to update the date format of an exist date field with PUT mapping API?