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This is completely not pertinent to the actual content of the article, but I think there a slight error in the first paragraph of the article. Jsonb support was added as part of Postgres 9.4, at least according to http://www.postgresql.org/docs/9.4/static/release-9-4.html, right?

I ask because we're planning on using jsonb here soon, and we were hoping it would be available in the version of Postgres available in ubuntu 16.04.

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JSONB is definitely in 9.4. We used that at the company I worked at previously. There might be improvements to it in 9.5 that I can't recall but it's definitely usable and production ready in 9.4

EDIT: Looks like [1] talks about what he was mentioning, there's a number of functions they added to improve the use and experience in 9.5.

[1] https://www.compose.io/articles/could-postgresql-9-5-be-your...

I think the article means to say is JSONB modification.

Prior to 9.5 there weren't commands to edit values within a JSONB column.

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