module ActiveRecord
module ConnectionAdapters
module SchemaStatements
+ def quote_column_names(column_name)
+ Array(column_name).map { |e| quote_column_name(e) }.join(", ")
+ end
+
def add_primary_key(table_name, column_name, options = {})
column_names = Array(column_name)
quoted_column_names = column_names.map { |e| quote_column_name(e) }.join(", ")
execute "ALTER TABLE #{table_name} ADD PRIMARY KEY (#{quoted_column_names})"
end
- alias_method :old_add_column_options!, :add_column_options!
+ def remove_primary_key(table_name)
+ execute "ALTER TABLE #{table_name} DROP PRIMARY KEY"
+ end
- def add_column_options!(sql, options)
- old_add_column_options!(sql, options)
- sql << " #{options[:options]}"
+ def add_foreign_key(table_name, column_name, reftbl, refcol = nil)
+ execute "ALTER TABLE #{table_name} ADD " +
+ "FOREIGN KEY (#{quote_column_names(column_name)}) " +
+ "REFERENCES #{reftbl} (#{quote_column_names(refcol || column_name)})"
end
alias_method :old_options_include_default?, :options_include_default?
def options_include_default?(options)
- old_options_include_default?(options) && !(options[:options] =~ /AUTO_INCREMENT/i)
+ return false if options[:options] =~ /AUTO_INCREMENT/i
+ return old_options_include_default?(options)
+ end
+
+ alias_method :old_add_column_options!, :add_column_options!
+
+ def add_column_options!(sql, options)
+ sql << " UNSIGNED" if options[:unsigned]
+ old_add_column_options!(sql, options)
+ sql << " #{options[:options]}"
end
end
def native_database_types
types = old_native_database_types
types[:bigint] = { :name => "bigint", :limit => 20 }
+ types[:double] = { :name => "double" }
+ types[:bigint_pk] = { :name => "bigint(20) DEFAULT NULL auto_increment PRIMARY KEY" }
+ types[:bigint_pk_64] = { :name => "bigint(64) DEFAULT NULL auto_increment PRIMARY KEY" }
+ types[:bigint_auto_64] = { :name => "bigint(64) DEFAULT NULL auto_increment" }
+ types[:bigint_auto_11] = { :name => "bigint(11) DEFAULT NULL auto_increment" }
+ types[:bigint_auto_20] = { :name => "bigint(20) DEFAULT NULL auto_increment" }
types
end
+
+ def change_column(table_name, column_name, type, options = {})
+ unless options_include_default?(options)
+ options[:default] = select_one("SHOW COLUMNS FROM #{table_name} LIKE '#{column_name}'")["Default"]
+
+ unless type == :string or type == :text
+ options.delete(:default) if options[:default] = "";
+ end
+ end
+
+ change_column_sql = "ALTER TABLE #{table_name} CHANGE #{column_name} #{column_name} #{type_to_sql(type, options[:limit], options[:precision], options[:scale])}"
+ add_column_options!(change_column_sql, options)
+ execute(change_column_sql)
+ end
+
+ def myisam_table
+ return { :id => false, :force => true, :options => "ENGINE=MyIsam" }
+ end
+
+ def innodb_table
+ return { :id => false, :force => true, :options => "ENGINE=InnoDB" }
+ end
+
+ def innodb_option
+ return "ENGINE=InnoDB"
+ end
+
+ def change_engine (table_name, engine)
+ execute "ALTER TABLE #{table_name} ENGINE = #{engine}"
+ end
+
+ def add_fulltext_index (table_name, column)
+ execute "CREATE FULLTEXT INDEX `#{table_name}_#{column}_idx` ON `#{table_name}` (`#{column}`)"
+ end
+
+ def alter_column_nwr_enum (table_name, column)
+ execute "alter table #{table_name} change column #{column} #{column} enum('node','way','relation');"
+ end
end
end
end
-
-myisam_table = { :id => false, :force => true, :options => "ENGINE=MyIsam" }
-innodb_table = { :id => false, :force => true, :options => "ENGINE=InnoDB" }