Update the implicit conversions

Author: cedx

src/Sql/Parameter.cs

@@ -64,31 +64,31 @@ public static implicit operator Parameter((string Name, object? Value) parameter
 	/// </summary>
 	/// <param name="parameter">The tuple providing the parameter properties.</param>
 	/// <returns>The parameter corresponding to the specified tuple.</returns>
-	public static implicit operator Parameter((string Name, object? Value, DbType DbType) parameter) =>
+	public static implicit operator Parameter((string Name, object? Value, DbType? DbType) parameter) =>
 		new(parameter.Name, parameter.Value) { DbType = parameter.DbType };
 
 	/// <summary>
 	/// Creates a new parameter from the specified tuple.
 	/// </summary>
 	/// <param name="parameter">The tuple providing the parameter properties.</param>
 	/// <returns>The parameter corresponding to the specified tuple.</returns>
-	public static implicit operator Parameter((string Name, object? Value, DbType DbType, int Size) parameter) =>
+	public static implicit operator Parameter((string Name, object? Value, DbType? DbType, int? Size) parameter) =>
 		new(parameter.Name, parameter.Value) { DbType = parameter.DbType, Size = parameter.Size };
 
 	/// <summary>
 	/// Creates a new parameter from the specified tuple.
 	/// </summary>
 	/// <param name="parameter">The tuple providing the parameter properties.</param>
 	/// <returns>The parameter corresponding to the specified tuple.</returns>
-	public static implicit operator Parameter((string Name, ParameterDirection Direction, DbType DbType) parameter) =>
+	public static implicit operator Parameter((string Name, ParameterDirection? Direction, DbType? DbType) parameter) =>
 		new(parameter.Name) { DbType = parameter.DbType, Direction = parameter.Direction };
 
 	/// <summary>
 	/// Creates a new parameter from the specified tuple.
 	/// </summary>
 	/// <param name="parameter">The tuple providing the parameter properties.</param>
 	/// <returns>The parameter corresponding to the specified tuple.</returns>
-	public static implicit operator Parameter((string Name, ParameterDirection Direction, DbType DbType, int Size) parameter) =>
+	public static implicit operator Parameter((string Name, ParameterDirection? Direction, DbType? DbType, int? Size) parameter) =>
 		new(parameter.Name) { DbType = parameter.DbType, Direction = parameter.Direction, Size = parameter.Size };
 
 	/// <summary>