Hi guys,

I found an error for listed parameters:

First create a table like this:

CREATE TABLE DapperTest (
    Field INT PRIMARY KEY IDENTITY,
    Field_1 INT
);

Now use the following Query:

IEnumerable<dynamic> result = con.Query(
    "SELECT * FROM dbo.DapperTest WHERE Field IN @Field AND Field_1 IN @Field_1",
    new { Field = new[] { 1, 2 }, Field_1 = new[] { 2, 3 } });

You get the following exception:

{"Incorrect syntax near '_1'."}

Grabbed from SQL Profiler:

exec sp_executesql N'SELECT * FROM dbo.DapperTest WHERE Field IN (@Field1,@Field2) AND Field_1 IN (@Field1,@Field2)_1',N'@Field1 int,@Field2 int,@Field_11 int,@Field_12 int',@Field1=1,@Field2=2,@Field_11=2,@Field_12=3

As you can see Dapper renames all "@field" occurences regardless if the string ends there.

I had the same issue in my own SqlBuilder library and I replaced the exact string replacement with a replacement of the position and length given by System.Text.RegularExpressions.Match class. Maybe that helps.