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I think this is at least partly related to
HHH-4907
. At least the syntax difference is explained by this. The Dialect class defines {{ boolean supportsRowValueConstructorSyntaxInInList()}} which is per default false. Value constructor syntax is queries of the form
.
The Oracle91 dialect overrides this method and returns true. I think the default for SQLServer is not overridden and hence false. It depends of course on which Dialect you are using.
You could try to extend the Dialect you are using and override supportsRowValueConstructorSyntaxInInList(). This should force the alternative SQL syntax. I don't know if and from which version this syntax will/would work for SQLServer.
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