HHH-18783 Removed @SkipForDialect from test case

          Method getSqlType for java.lang.Character without length should return "char(1)", not "char"

Author: cigaly

hibernate-core/src/main/java/org/hibernate/dialect/MySQLSqlAstTranslator.java

@@ -4,10 +4,6 @@
  */
 package org.hibernate.dialect;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Locale;
-
 import org.hibernate.engine.jdbc.Size;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.internal.util.collections.Stack;
@@ -41,6 +37,10 @@
 import org.hibernate.sql.exec.spi.JdbcOperation;
 import org.hibernate.sql.exec.spi.JdbcOperationQueryInsert;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Locale;
+
 /**
  * A SQL AST translator for MySQL.
  *
@@ -81,9 +81,15 @@ private static String getSqlType(CastTarget castTarget, String sqlType, Dialect
 				case "varchar":
 				case "nchar":
 				case "nvarchar":
-					return castTarget.getLength() == null
-							? "char"
-							: ( "char(" + castTarget.getLength() + ")" );
+					if ( castTarget.getLength() == null ) {
+						if ( castTarget.getJdbcMapping().getJdbcJavaType().getJavaType() == Character.class ) {
+							return "char(1)";
+						}
+						else {
+							return "char";
+						}
+					}
+					return "char(" + castTarget.getLength() + ")";
 				case "binary":
 				case "varbinary":
 					return castTarget.getLength() == null

hibernate-core/src/test/java/org/hibernate/orm/test/query/hql/FunctionTests.java

@@ -1131,7 +1131,6 @@ public void testCastFunctionHexToBinary(SessionFactoryScope scope) {
 
 	@Test
 	@SkipForDialect( dialectClass = AltibaseDialect.class, reason = "Altibase cast to char does not do truncatation")
-	@SkipForDialect( dialectClass = MySQLDialect.class, matchSubTypes = true, reason = "MySQL cast does not do truncatation")
 	public void testCastFunctionWithLength(SessionFactoryScope scope) {
 		scope.inTransaction(
 				session -> {