upsert 2.9.10
Make it easy to upsert on MySQL, PostgreSQL, and SQLite3. Transparently creates merge functions for MySQL and PostgreSQL; on SQLite3, uses INSERT OR IGNORE.
          Gemfile:
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          安裝:
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      Development 相依性套件 (16):
            activerecord
            ~> 5
          
          
            activerecord-import
            ~> 1
          
          
          
            faker
            >= 0
          
          
            mysql2
            ~> 0.5
          
          
            pg
            ~> 1.1
          
          
            pg-hstore
            >= 1.1.3
          
          
            pry
            >= 0
          
          
            pry-byebug
            >= 0
          
          
            rake
            ~> 10
          
          
            rspec-core
            >= 0
          
          
            rspec-expectations
            >= 0
          
          
            rspec-mocks
            >= 0
          
          
            sequel
            >= 0
          
          
            sqlite3
            >= 0
          
          
            yard
            >= 0
          
    
