Question

我需要通过将条件与另一个表连接来更新表。

UPDATE a SET a.REF_ID = b.NEW_REF_ID FROM CRS_CUSTOMERS a INNER JOIN DAY0_SUBSET b ON a.CUSTOMER_ID = b.CURRENT_CUSTOMER_ID;

以上陈述只是抱怨ORA-00933: SQL command not properly ended，FROM CRS_CUSTOMERS a

行突出显示语法错误

Answer 1

这不是有效的UPDATE语法。

建议你尝试一下[目前无法测试它，并假设day__subset表中不存在ref_id和customer_id]

UPDATE CRS_CUSTOMERS
  SET REF_ID =
    (select b.NEW_REF_ID
       from DAY0_SUBSET b
       where b.current_customer_id = customer_id)
  where CUSTOMER_ID in (select b.CURRENT_CUSTOMER_ID from DAY0_SUBSET b)

Answer 2

您需要嵌套的子选择：

trait Encodable{
     def encode:String
}

object Encodable{
      implicit def asEncodable[T](t:T)(implicit encoder:Encoder[T]) = new Encodable {
              def encode = encoder.encode(t)
       } 

}

val encodableFragments:List[Encodable] = List(TextFragment("text fragment"), NumberFragment(123))

SQL Fiddle Demo

使用join-error ORA-00933更新表

2 个答案: