Module: ClickHouse::Extend::ConnectionExplaining

Included in:

Connection

Defined in:

lib/click_house/extend/connection_explaining.rb

Constant Summary

EXPLAIN =

'EXPLAIN'

EXPLAIN_RE =

/\A(\s*#{EXPLAIN})/io.freeze

Instance Method Summary

• #explain(sql, io: StringIO.new) ⇒ Object

  String.

Instance Method Details

#explain(sql, io: StringIO.new) ⇒ Object

Returns String.

Returns:

• String

# File 'lib/click_house/extend/connection_explaining.rb', line 10

def explain(sql, io: StringIO.new)
  res = execute("#{EXPLAIN} #{sql.gsub(EXPLAIN_RE, '')}")
  io.puts(res.body)
  io.string
end