Grails应用程序生成不正确的sql

Question

我正在使用Grails 2.1.0和Oracle 11。

我有一个域类，我正在尝试连接到Oracle数据库中的表。当生成SQL以填充list（）方法时，我得到ORA-00918：列模糊定义。发生此错误是因为使用相同的别名请求表的主键两次。这是生成的SQL：

select * from ( select this_.BENCHMARK_CUSIP as BENCHMARK1_4_0_, this_.acronym as acronym4_0_, this_.as_of_date as as3_4_0_, this_.ask_price as ask4_4_0_, this_.ask_yield as ask5_4_0_, this_.benchmark_cusip as benchmark1_4_0_, this_.bid_price as bid6_4_0_, this_.bid_yield as bid7_4_0_, this_.coupon as coupon4_0_, this_.coupon_frequency as coupon9_4_0_, this_.is_on_the_run as is10_4_0_, this_.last_update_time as last11_4_0_, this_.last_update_user as last12_4_0_, this_.maturity as maturity4_0_, this_.name as name4_0_, this_.price as price4_0_, this_.source as source4_0_, this_.yield as yield4_0_ from BENCHMARK this_ ) where rownum <= ?

正如您所见，this_.benchmark_cusip为benchmark1_4_0出现两次。

这是我的域类

class Benchmark {
    String benchmarkCusip
    String acronym
    String name
    Double coupon
    java.math.BigDecimal couponFrequency
    Date maturity
    String isOnTheRun
    Date asOfDate
    Double bidYield
    Double yield
    Double askYield
    Double bidPrice
    Double price
    Double askPrice
    String source
    String lastUpdateUser
    Date lastUpdateTime

static mapping = {
    table 'BENCHMARK'        
    version false
   columns{id column:'BENCHMARK_CUSIP', generated:'assigned'}

}

控制器刚刚定义为def scaffold = true。

我认为我的配置错误，但在我的生活中，我无法在办公室可以访问的有限数量的网站上找到它。

Answer 1

通常我会这样做：

class Benchmark {
  ...

  static mapping = {
    table 'benchmark'
    id column: 'benchmark_cusip', name: 'benchmarkCusip'
  }

}