Module | Sequel::SQL::QualifyingMethods |
In: |
lib/sequel/sql.rb
|
Includes a qualify method that created QualifiedIdentifiers, used for qualifying column names with a table or table names with a schema, and the * method for returning all columns in the identifier if no arguments are given.
If no arguments are given, return an SQL::ColumnAll:
Sequel.expr(:a__b).* # a.b.*
# File lib/sequel/sql.rb, line 870 870: def *(ce=(arg=false;nil)) 871: if arg == false 872: Sequel::SQL::ColumnAll.new(self) 873: else 874: super(ce) 875: end 876: end
Qualify the receiver with the given qualifier (table for column/schema for table).
Sequel.expr(:column).qualify(:table) # "table"."column" Sequel.expr(:table).qualify(:schema) # "schema"."table" Sequel.qualify(:table, :column).qualify(:schema) # "schema"."table"."column"
# File lib/sequel/sql.rb, line 883 883: def qualify(qualifier) 884: QualifiedIdentifier.new(qualifier, self) 885: end