text: var db = require('./db')
  
  exports.up = function (next) {
    const sql =
      [
        `CREATE TABLE coupons (
          id UUID PRIMARY KEY,
          code TEXT NOT NULL,
          discount SMALLINT NOT NULL,
          soft_deleted BOOLEAN DEFAULT false )`,
        `CREATE UNIQUE INDEX uq_code ON coupons (code) WHERE NOT soft_deleted`
      ]
  
    db.multi(sql, next)
  }
  
  exports.down = function (next) {
    next()
  }
  