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clarifying JSON limitation in docs

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Shlomi Noach 2017-08-22 12:10:47 +03:00
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doc/requirements-and-limitations.md
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@ -28,7 +28,7 @@ The `SUPER` privilege is required for `STOP SLAVE`, `START SLAVE` operations. Th
- MySQL 5.7 generated columns are not supported. They may be supported in the future.
- MySQL 5.7 `JSON` columns are not supported. They are likely to be supported shortly.
- MySQL 5.7 `JSON` columns are supported but not as part of `PRIMARY KEY`
- The two _before_ & _after_ tables must share a `PRIMARY KEY` or other `UNIQUE KEY`. This key will be used by `gh-ost` to iterate through the table rows when copying. [Read more](shared-key.md)
- The migration key must not include columns with NULL values. This means either: