OVSDB_CHECK_POSITIVE([ephemeral column],
[[parse-column mycol '{"type": "uuid", "ephemeral": true}']],
[[{"ephemeral":true,"type":"uuid"}]])
-
-OVSDB_CHECK_POSITIVE([column with comment],
- [[parse-column mycol '{"type": "boolean",
- "comment": "extra information about this column"}']],
- [[{"comment":"extra information about this column","type":"boolean"}]])