c# - ODAC 11.2 版本 4 (11.2.0.3.0) 抛出 "Oracle 11.2.0.2.0 does not support APPLY"异常

Question

我正在使用 Entity Framework 和 oracle 刚刚发布的新 ODAC。

我的问题是我的一些在以前的测试版中有效的查询在这个新版本中停止了。

这是一个例子:

IQueryable<SYS_PERFIL> query1 = m.DBContext.SYS_PERFIL.Where(T => T.SYS_UTILIZADOR.Where(TT => TT.ACTIVO == 1).Count() > 0);

IQueryable<SYS_PERFIL> query2 = m.DBContext.SYS_PERFIL.Where(T => T.SYS_UTILIZADOR.FirstOrDefault(TT => TT.ACTIVO == 1) != null);

string test1Query = ((System.Data.Objects.ObjectQuery)query1).ToTraceString();

string test2Query = ((System.Data.Objects.ObjectQuery)query2).ToTraceString();

var test1 = query1.ToList();

var test2 = query2.ToList();

当 test1 返回当前结果时，test2 抛出 oracle 异常“ORA-00905:缺少关键字”，消息为:“Oracle 11.2.0.2.0 不支持 APPLY”。

我不想重新测试我所有的方法。有没有办法告诉 EF 不要使用 apply？

以下是 EF 生成的查询:

测试1查询:

SELECT "Project1"."PERFIL_ID" AS "PERFIL_ID" FROM ( SELECT "Extent1"."PERFIL_ID" AS PERFIL_ID", (SELECT COUNT(1) AS "A1" FROM "SMI2012"."SYS_UTILIZADOR" "Extent2" WHERE (("Extent1"."PERFIL_ID" = "Extent2"."PERFIL_ID") AND (1 = "Extent2"."ACTIVO"))) AS "C1"
 FROM "SMI2012"."SYS_PERFIL" "Extent1")  "Project1" WHERE ("Project1"."C1" > 0)

测试2查询:

SELECT "Extent1"."PERFIL_ID" AS "PERFIL_ID" FROM  "SMI2012"."SYS_PERFIL" "Extent1" CROSS APPLY  (SELECT "Extent2"."PERFIL_ID" AS "PERFIL_ID", "Extent2"."ACTIVO" AS "ACTIVO", "Extent2"."USER_ID" AS "USER_ID" FROM "SMI2012"."SYS_UTILIZADOR" "Extent2" WHERE (("Extent1"."PERFIL_ID" = "Extent2"."PERFIL_ID") AND (1 = "Extent2"."ACTIVO")) AND (ROWNUM <= (1) ) ) "Element1" WHERE ("Element1"."USER_ID" IS NOT NULL)

提前致谢。

Answer 1

Telerik OpenAccess ORM 不使用 APPLY 语句。我在嵌套组查询中遇到了同样的问题。当我构建 OA 模型时，查询运行得很好!