/// <summary>
/// 设置连接条件
/// </summary>
/// <typeparam name="TLeft">左表实体类型</typeparam>
/// <typeparam name="TRight">右表实体类型</typeparam>
/// <param name="expression">条件表达式</param>
public void On <TLeft, TRight>(Expression <Func <TLeft, TRight, bool> > expression) where TLeft : class where TRight : class
{
if (expression == null)
{
throw new ArgumentNullException(nameof(expression));
}
var expressions = Lambdas.GetGroupPredicates(expression);
var items = expressions.Select(GetOnItems).ToList();
_params.LastOrDefault()?.On(items, _dialect);
}