use cases for sql and nosql code example

Example 1: update using case in mysql

UPDATE `table` SET `uid` = CASE
    WHEN id = 1 THEN 2952
    WHEN id = 2 THEN 4925
    WHEN id = 3 THEN 1592
    ELSE `uid`
    END
WHERE id  in (1,2,3)

Example 2: how to define a save method in ruby for sql databases

def save
    sql = <<-SQL
      INSERT INTO songs (name, album) 
      VALUES (?, ?)
    SQL
 
    DB[:conn].execute(sql, self.name, self.album)
 
    @id = DB[:conn].execute("SELECT last_insert_rowid() FROM songs")[0][0]
 
  end