Firebie

It would be nice to have extra API to discover stored procedure parameters using 'DeriveParameters' of 'SqlCommandBuilder', which works for SqlServer in a case that we already have a transaction...

Extend InsertOrUpdate overload to support single insertOrUpdateSetter

1

It would be nice to have next overload of InsertOrUpdate: public static int InsertOrUpdate( [NotNull] this Table target, [NotNull] Expression insertOrUpdateSetter)

Generate union fails

3

```Exception thrown: 'System.ArgumentOutOfRangeException' in mscorlib.dll``` ```c# dc.GetTable() .Concat(dc.GetTable().TableName(TestReceipt.ExternalReceiptsTableName)) .Select( i => new { i.ReceiptNo, a = TestCustomer.GetName(i.Customer.BillingGroup), }) .ToList(); [LinqToDB.Mapping.Table("MRECEIPT")] public class TestReceipt { public static string TableName => "MRECEIPT";...

Wrong SQL is generated for sub-query

2

### Wrong SQL is generated for sub-query ``` Exception message: Microsoft.Data.SqlClient.SqlException HResult=0x80131904 Message=An expression of non-boolean type specified in a context where a condition is expected, near 'AND'. Incorrect syntax...