Today, etcdctl endpoint health only performs a quorum GET. If server is corrupted or exceeded quota (which put the server into read only mode), this command incorrectly returns healthy.

Steps to produce the problem:

1. From https://sheetjs.com/demo/table.html click [Export to XLS!]
2. For comparison, export XLSX and XLSB too.
3. Open the file in Excel 365. In Excel, click [Enable Editing].
4. Ctrl-P to print. ** CRASH **
   OR
5. From https://sheetjs.com/demo/table.html click [Export to XLS!]
6. Open the file in Excel 2010. Excel title bar shows 'compatibility mode'.

jsonb_exists_any is a builtin function that does the same thing as ?| in Postgres. See the documentation here: https://www.postgresql.org/docs/current/functions-json.html

Sometimes it is needed to store compressed data in the DB. Unfortunately not all the DBs have built-in compression and FUSE compressed FSes are not available for every OS. So it may make sense to store compressed binary blobs in the DB.

Unfortunately when one sees them in DBeaver he sees them compressed, but often they are needed uncompressed. So it'd be nice to have a feature to decompress the

Issue description

Go 1.15 will introduce a new Validator interface, which may be implemented by Conn to allow drivers to signal if a connection is valid or if it should be discarded:

https://tip.golang.org/pkg/database/sql/driver/#Validator

We should add the Default Timeout connection string keyword. Order of precedence would be:

1. SqliteCommand.CommandTimeout (always wins if set)
2. SqliteConnection.DefaultTimeout
3. Default Time= in the connection string
4. 30 (the ADO.NET default)