split by

split by 按照某个数组字段将记录拆分。

语法

split by <field_name>

参数

返回值

无

示例

• 集合 sample.employee 中原始记录如下：

  { a: 1, b: 2, c: [3, 4, 5] }
  { a: 2, b: 3, c: [6, 7] }

• 对集合 sample.employee 按字段 c 拆分

  > db.exec( "select a,b,c from sample.employee split by c" )
  { "a": 1, "b": 2, "c": 3 }
  { "a": 1, "b": 2, "c": 4 }
  { "a": 1, "b": 2, "c": 5 }
  { "a": 2, "b": 3, "c": 6 }
  { "a": 2, "b": 3, "c": 7 }
  Return 5 row(s).
  Takes 0.5281s.