EF Core with Pomelo Adapter 在执行存储过程时返回错误

Question

I am using EF Core 2.2.6. I have a stored procedure that I call using the code below:

var dateFromParam = new MySqlParameter("@DateFrom", dateFrom.ToShortDateString());
var dateToParam = new MySqlParameter("@DateTo", dateTo.ToShortDateString());

List<MyData> result = await context.Query<MyData>().AsNoTracking().FromSql("CALL MyStoredProcudure @p0, @p1",
    parameters: new [] { dateFromParam, dateToParam }).ToListAsync();

and I get the following error:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '@p0, @p1' at line 1",

How can I call it and pass the two parameters that I have?

Answer 1

See my answer on GitHub about the same question for EF Core 3.0.

In short, use the parameter names exactly as you defined them and use MySQL's correct call syntax (parenthesis):

var dateFromParam = new MySqlParameter("@DateFrom", dateFrom.ToShortDateString());
var dateToParam = new MySqlParameter("@DateTo", dateTo.ToShortDateString());

List<MyData> result = await context
    .Query<MyData>()
    .AsNoTracking()
    .FromSql("CALL MyStoredProcudure(@DateFrom, @DateTo)",
             parameters: new [] { dateFromParam, dateToParam })
    .ToListAsync();