"Arora, Nick" <NARORA@xxxxxxxx> writes: > We are using PostgreSQL 12.13. We are noticing that queries that attempt to retrieve an element of an array by specifying its position cause a warning to be emitted: "WARNING: unrecognized node type: 110". I don't see that here, so I'm guessing it's coming from some extension. What extensions do you have loaded? Node type 110 would be T_SubscriptingRef in v12, which is a type name that didn't exist in earlier versions (it used to be called ArrayRef), so it's not very hard to believe that some extension missed out support for that type. But the only core-PG suspect is pg_stat_statements, and I can see that it does know that node type. regards, tom lane
