Skip tests for MySql

Author: bahusoid

src/NHibernate.Test/NHSpecificTest/GH3334/Fixture.cs

@@ -44,6 +44,11 @@ public void OneTimeTearDown()
 			transaction.Commit();
 		}
 
+		protected override bool AppliesTo(Dialect.Dialect dialect)
+		{
+			return TestDialect.SupportsCorrelatedColumnsInSubselectJoin;
+		}
+
 		public class TestCaseItem
 		{
 			public string Name { get; }

src/NHibernate.Test/TestDialect.cs

@@ -203,5 +203,10 @@ public bool SupportsSqlType(SqlType sqlType)
 		/// Returns true if you can cancel a query.
 		/// </summary>
 		public virtual bool SupportsCancelQuery => true;
+
+		/// <summary>
+		/// Some databases (MySql) don't support using main table aliases in subquery inside join ON clause
+		/// </summary>
+		public virtual bool SupportsCorrelatedColumnsInSubselectJoin => true;
 	}
 }

src/NHibernate.Test/TestDialects/MySQL5TestDialect.cs

@@ -14,5 +14,12 @@ public MySQL5TestDialect(Dialect.Dialect dialect)
 		/// This behaviour is documented at: http://dev.mysql.com/doc/refman/5.6/en/update.html
 		/// </summary>
 		public override bool SupportsModifyAndSelectSameTable => false;
+
+		/// <summary>
+		/// A correlated column can be present only in the subquery's WHERE clause (and not in the SELECT list,
+		/// a JOIN or ORDER BY clause, a GROUP BY list, or a HAVING clause). Nor can there be any correlated column inside a derived table in the subquery's FROM list.
+		/// See https://dev.mysql.com/doc/refman/8.0/en/correlated-subqueries.html
+		/// </summary>
+		public override bool SupportsCorrelatedColumnsInSubselectJoin => false;
 	}
 }