Query text passed over string variable is not picked up by Analyzer

[alex-belikov]

Example:

public async Task<List<Symbol>> GetAllSymbolsVariable()
{
    var sql = "select * from Symbol";
    var results = await Conn().QueryAsync<Symbol>(sql); // no warning
    return results.AsList();
}

public async Task<List<Symbol>> GetAllSymbolsInline()
{
    var results = await Conn().QueryAsync<Symbol>("select * from Symbol"); // has warning
    return results.AsList();
}