Class: Sum

Inherits:

Column

• Object
• Expr
• Column
• Sum

Defined in:

lib/lilit_sql.rb

Instance Attribute Summary

Attributes inherited from Column

#name, #origin

Instance Method Summary

• #decl_sql ⇒ Object
• #initialize(col) ⇒ Sum constructor

  A new instance of Sum.

• #ref_sql ⇒ Object

Methods inherited from Column

#==, #state, #with_from

Methods inherited from Expr

#*, #+, #<, #<=, #>, #>=, #and, #asc, #desc, #eq, #in, #minus, #ne, #not, #plus

Constructor Details

#initialize(col) ⇒ Sum

Returns a new instance of Sum.

# File 'lib/lilit_sql.rb', line 316

def initialize(col)
  super(nil, col)
end

Instance Method Details

#decl_sql ⇒ Object

# File 'lib/lilit_sql.rb', line 324

def decl_sql
  "sum(#{@origin.ref_sql})"
end

#ref_sql ⇒ Object

# File 'lib/lilit_sql.rb', line 320

def ref_sql
  decl_sql
end