Arel::Crud

    # File lib/arel/crud.rb, line 30
30:     def delete
31:       dm = DeleteManager.new @engine
32:       dm.wheres = @ctx.wheres
33:       dm.from @ctx.froms
34:       @engine.connection.delete dm.to_sql, 'AREL'
35:     end

    # File lib/arel/crud.rb, line 24
24:     def insert values
25:       im = InsertManager.new @engine
26:       im.insert values
27:       @engine.connection.insert im.to_sql
28:     end

    # File lib/arel/crud.rb, line 6
 6:     def update values
 7:       um = UpdateManager.new @engine
 8: 
 9:       if Nodes::SqlLiteral === values
10:         relation = @ctx.froms
11:       else
12:         relation = values.first.first.relation
13:       end
14:       um.table relation
15:       um.set values
16:       um.take @ast.limit
17:       um.order(*@ast.orders)
18:       um.wheres = @ctx.wheres
19: 
20:       @engine.connection.update um.to_sql, 'AREL'
21:     end