Exception when using SQLite because of nvarchar(max)

When using "UseSqlLite": true," the following exception is thrown.

System.AggregateException: 'One or more errors occurred. (SQLite Error 1: 'near "max": syntax error'.)'

Inner Exception:
SqliteException: SQLite Error 1: 'near "max": syntax error'.

This exception was originally thrown at this call stack:
    [External Code]
    BlazorBoilerplate.Storage.DatabaseInitializer.MigrateAsync() in DatabaseInitializer.cs
    [External Code]
    BlazorBoilerplate.Storage.DatabaseInitializer.SeedAsync() in DatabaseInitializer.cs

Many of the database models have .HasColumnType("nvarchar(max)"). But SQLite does not support varchar(max) according to https://github.com/dotnet/efcore/issues/7030. This is one of the limitations reported in the EF documentation.

There is an unresolved question on stackexchange regarding this topic. I did not manage to apply the suggested solution.

As a quick and dirty workaround one can replace every occurence with nvarchar(max) with nvarchar(2048).

[EmergentCybernetics]

@GioviQ I ran into the same issue when trying to use PostgreSQL, which is a server.

I’d like to be able to run this on PostgreSQL to make use of some other features we have in PostgreSQL. MS SQL has a hardcoded limit of requiring a server with 2GB or more of RAM, which is kind of a waste when PostgreSQL will easily run on a $5/month 1 core CPU and 1GB RAM server for our volume/load.

Being able to use SQLite is also nice for basic development. No need to setup a database server to get things running.

I’ll be working on getting PostgreSQL supported again over the next month. Do you have any suggesting on how to handle this nvarchar(max) problem? PostgreSQL equivalent data type is TEXT or VARCHAR for variable unlimited length.

• https://www.postgresqltutorial.com/postgresql-char-varchar-text/

I don’t see nvarchar(2048) as being a solution because 2048 characters isn’t always enough.

[GioviQ]

A webapp should supoort thousands of concurrent users, with SQLite is not the case…