Oracle嵌套连接性能不佳

Question

我有一个通用查询生成器，可以添加任意数量的过滤器。对于那些需要通过两个表的过滤器（过滤器b），我的性能越来越差。

SELECT * 
FROM   (SELECT "TABLE_1".* 
        FROM   "TABLE_1" 
               -- filter a: 1 table deep (fast)
               inner join (SELECT "SHARED_ID"
                           FROM   "TABLE_4"
                           WHERE "TABLE_4"."COLUMN_A" LIKE '%123%'
                          ) "TABLE_4"
                      ON "TABLE_1"."SHARED_ID" = "TABLE_4"."SHARED_ID"
               -- filter b: 2 tables deep (slow)
               inner join (SELECT "SHARED_ID" 
                           FROM   "TABLE_2" 
                                  inner join (SELECT "ID" 
                                              FROM   "TABLE_3" 
                                              WHERE  NAME LIKE '%Abc%') 
                                             "TABLE_3" 
                                          ON "TABLE_2"."TABLE_3_ID" = 
                          "TABLE_3"."ID") "TABLE_2" 
                       ON "TABLE_1"."SHARED_ID" = "TABLE_2"."SHARED_ID")
WHERE  ROWNUM <= 20