RailsDBMySQLPostgreSQL

2015/04/17Riding Rails(Rails)

https://github.com/mitoma

on RDBMS

RailsDB

RailsMySQLPostgreSQL

Rails

(Salesforce) (Amazon Web Service)

RailsDB

RailsDB

DB1

DB

DB

MySQLPostgreSQL

RailsDB

MySQLPostgreSQL

DDL, DMLPostgreSQL

DDL, DMLPostgreSQL

PgSanity

MySQL PostgreSQL tinyint(1) boolean true/false

varchar citext

auto_increment serial setvalDDL

blob bytea line.gsub!(/0x([0-9,A-F]+)/, "decode('\\1','hex')")

MySQLPostgreSQL

MySQLPostgreSQL

grep

ActiveRecordMD5

attributeMD5

diActiveRecord

MySQLPostgreSQL

MySQLPostgreSQL

case insensitive order bynull group by Etc

PostgreSQL citext

MySQLPostgreSQL

MySQLPostgreSQL

ifActiveRecord

RailsDB

PostgreSQLDBDB

DBDB

5

RailsDB

RDBMS

OR Mapper

1~1000

http://www.techscore.com/blog/2014/12/05/rails_db_migration/