Postgres 15 Merge Command with Examples

This will make complex upserts so much more simple, fantastic addition.<p>I really hope `RETURNING` support gets added to `MERGE` asap though (I believe it&#x27;s been noted as a fairly trivial addition to come in future), then it&#x27;ll be super powerful for doing bulk upserts that require post-processing.

&gt; prior to Postgres 15, you could use the &quot;upsert&quot; method with the ON CONFLICTclause.<p>&gt; Now, MERGE can be used instead!<p>No mention of deadlocks in the article has me worried about thoroughness of the analysis.

This sounds really cool; maybe slightly cleaner than an INSERT ... ON CONFLICT statement. However, is that the only advantage?

Great to see!<p>My biggest gripe with ON CONFLICT upserts are the IDs (sequences) having gaps in them. Any good ways to prevent that?

In SqlServer you have to use MERGE with HOLDLOCK to avoid issues, is it possible in Postgres? Is it so by default?

This is one of my favorite features in snowflake (I’m assuming they didn’t invent it) and am happy to see it in Postgres now.

Awesome. How the hell did it take 20 years to finally land?