导轨更换台

代码示例

编辑列表ruby on rails

change_column :table, :column_name, :type, :whatever_here

如何在ruby中创建SQL表

def self.create_table
    sql = <<-SQL
      CREATE TABLE IF NOT EXISTS IF NOT EXISTS students (
        name TEXT,
        grade TEXT
      )
    SQL
    DB[:conn].execute(sql)
  end

类似页面

带有示例的类似页面

为什么在ruby中使用create table

将我的migrate表与控制器连接以获取ruby on rails中的数据

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empty row

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