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MSSQL (Microsoft.Data.SqlClient): can't retrieve DateOnly
See original GitHub issueI’m using .net 6, SQL Hydra v. 1.0.0, and Microsoft.Data.SqlClient v. 4.1.0 to connect to an MSSQL database that includes some DATE columns. SQL Hydra tries to use System.DateOnly for this, and it can write dates to the database just fine, but as soon as it tries to read a date from the database, it crashes in the SqlHydra-generated Reader code with
System.InvalidCastException: Unable to cast object of type 'System.DateTime' to type 'System.DateOnly'.
at Microsoft.Data.SqlClient.SqlDataReader.GetFieldValueFromSqlBufferInternal[T](SqlBuffer data, _SqlMetaData metaData, Boolean isAsync)
at Microsoft.Data.SqlClient.SqlDataReader.GetFieldValueInternal[T](Int32 i, Boolean isAsync)
at Microsoft.Data.SqlClient.SqlDataReader.GetFieldValue[T](Int32 i)
at MyProject.MyDatabase.dbo.get_MyColumn@537-2.Invoke(Int32 arg00) in C:\Git\MyRepo\MyProject\MyDatabase.fs:line 537
at MyProject.MyDatabase.RequiredColumn`2.Read(FSharpOption`1 alias) in C:\Git\MyRepo\MyProject\MyDatabase.fs:line 11
at MyProject.MyDatabase.dbo.MyTableReader.Read() in C:\Git\MyRepo\MyProject\MyDatabase.fs:line 542
It seems like GetFieldValue<DateOnly> doesn’t work? Can we just use GetDateTime >> DateOnly.FromDateTime?
Issue Analytics
- State:
- Created a year ago
- Comments:10 (10 by maintainers)
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Thanks for the really fast turnaround on this, and for the awesome library for working with databases! Really a big help!
That fix definitely works:
So the better interim fix would be for you to manually add that fix to your generated file (rather than reverting to net5) until I release the patch.
Also change it at the bottom of the generated file as well (for doing
selecton individual columns):