[GitHub] [arrow-datafusion] matthewmturner opened a new issue #1906: Add `\i` command to datafusion-cli

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matthewmturner opened a new issue #1906:
URL: https://github.com/apache/arrow-datafusion/issues/1906


   Taking inspiration from`psql` , it implements a `\i` command (not a command line argument) for this usecase. It *includes* a file:
   
   https://www.postgresql.org/docs/13/app-psql.html
   
   > \i or \include filename
   > Reads input from the file filename and executes it as though it had been typed on the keyboard.
   > 
   > If filename is - (hyphen), then standard input is read until an EOF indication or \q meta-command. This can be used to intersperse interactive input with input from files. Note that Readline behavior will be used only if it is active at the outermost level.
   
   It appears that mysql has a similar command `source` or `\.` that does the same thing
   
   https://dev.mysql.com/doc/refman/8.0/en/mysql-batch-commands.html
   
   
   Thus I would recommend implementing a `\i` command (and possibly also a `source` command)
   
   _Originally posted by @alamb in https://github.com/apache/arrow-datafusion/issues/1875#issuecomment-1057113073_


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