We can not push down the limit when enable group rescan.

src/sql/engine/table/ob_table_scan_op.cpp

@@ -685,6 +685,13 @@ int ObTableScanOp::prepare_pushdown_limit_param()
     need_final_limit_ = true;
     tsc_rtdef_.scan_rtdef_.limit_param_.offset_ = 0;
     tsc_rtdef_.scan_rtdef_.limit_param_.limit_ = -1;
+
+    if (nullptr != MY_CTDEF.lookup_ctdef_) {
+      OB_ASSERT(nullptr != tsc_rtdef_.lookup_rtdef_);
+      tsc_rtdef_.lookup_rtdef_->limit_param_.offset_ = 0;
+      tsc_rtdef_.lookup_rtdef_->limit_param_.limit_  = -1;
+    }
+
   } else if (tsc_rtdef_.has_lookup_limit() || das_ref_.get_das_task_cnt() > 1) {
     //for index back, need to final limit output rows in TableScan operator,
     //please see me for the reason: https://work.aone.alibaba-inc.com/issue/43232745

tools/deploy/mysql_test/test_suite/static_engine/r/mysql/subplan_filter.result

@@ -2456,3 +2456,73 @@ select c1,c1 in (select c1 from t2 where t2.c1>=t1.c1) and  c1 in (select c1 fro
 | 26 |    1 |    1 |    1 |
 | 28 | NULL | NULL |    0 |
 +----+------+------+------+
+
+explain_protocol: 0
+drop table if exists t1;
+drop table if exists t3;
+
+create table t1 (c1 int primary key, c2 int, c3 int, c4 int) ;
+create table t3 (c1 int primary key, c2 int, c3 int, c4 int, index(c3)) ;
+
+insert into t1 (c1, c2, c3, c4) values (1, 1, 1, 1);
+insert into t1 (c1, c2, c3, c4) values (2, 2, 2, 2);
+insert into t1 (c1, c2, c3, c4) values (12,9, 3, 3);
+insert into t1 (c1, c2, c3, c4) values (4, 3, 4, 4);
+insert into t1 (c1, c2, c3, c4) values (3, 3, 5, 5);
+insert into t1 (c1, c2, c3, c4) values (9, 10,6, 6);
+insert into t1 (c1, c2, c3, c4) values (7, 4, 7, 7);
+insert into t1 (c1, c2, c3, c4) values (6, 7, 8, 8);
+
+insert into t1 (c1, c2, c3, c4) values (18, 1,9, 9);
+insert into t1 (c1, c2, c3, c4) values (19, 2,10,10);
+insert into t1 (c1, c2, c3, c4) values (20, 3,11,11);
+insert into t1 (c1, c2, c3, c4) values (21, 5,12,12);
+insert into t1 (c1, c2, c3, c4) values (22, 7,13,13);
+insert into t1 (c1, c2, c3, c4) values (23, 7,14,14);
+insert into t1 (c1, c2, c3, c4) values (24, 7,15,15);
+insert into t1 (c1, c2, c3, c4) values (25, 7,16,16);
+insert into t1 (c1, c2, c3, c4) values (26, 9,17,17);
+insert into t1 (c1, c2, c3, c4) values (28, 3,18,18);
+
+insert into t3 (c1, c2, c3, c4) values (1, 1, 1, 1);
+insert into t3 (c1, c2, c3, c4) values (2, 2, 2, 2);
+insert into t3 (c1, c2, c3, c4) values (12,9, 3, 3);
+insert into t3 (c1, c2, c3, c4) values (4, 3, 4, 4);
+insert into t3 (c1, c2, c3, c4) values (3, 3, 5, 5);
+insert into t3 (c1, c2, c3, c4) values (9, 10,6, 6);
+insert into t3 (c1, c2, c3, c4) values (7, 4, 7, 7);
+insert into t3 (c1, c2, c3, c4) values (6, 7, 8, 8);
+
+insert into t3 (c1, c2, c3, c4) values (18, 1,9, 9);
+insert into t3 (c1, c2, c3, c4) values (19, 2,10,10);
+insert into t3 (c1, c2, c3, c4) values (20, 3,11,11);
+insert into t3 (c1, c2, c3, c4) values (21, 5,12,12);
+insert into t3 (c1, c2, c3, c4) values (22, 7,13,13);
+insert into t3 (c1, c2, c3, c4) values (23, 7,14,14);
+insert into t3 (c1, c2, c3, c4) values (24, 7,15,15);
+insert into t3 (c1, c2, c3, c4) values (25, 7,16,16);
+insert into t3 (c1, c2, c3, c4) values (26, 9,17,17);
+insert into t3 (c1, c2, c3, c4) values (28, 3,18,18);
+
+select /*+ no_rewrite*/ * from t1 where exists (select /*+no_unnest */ 1 from t3 where t1.c1 > t3.c3 and t3.c4 < 100 limit 1) ;
++----+------+------+------+
+| c1 | c2   | c3   | c4   |
++----+------+------+------+
+|  2 |    2 |    2 |    2 |
+|  3 |    3 |    5 |    5 |
+|  4 |    3 |    4 |    4 |
+|  6 |    7 |    8 |    8 |
+|  7 |    4 |    7 |    7 |
+|  9 |   10 |    6 |    6 |
+| 12 |    9 |    3 |    3 |
+| 18 |    1 |    9 |    9 |
+| 19 |    2 |   10 |   10 |
+| 20 |    3 |   11 |   11 |
+| 21 |    5 |   12 |   12 |
+| 22 |    7 |   13 |   13 |
+| 23 |    7 |   14 |   14 |
+| 24 |    7 |   15 |   15 |
+| 25 |    7 |   16 |   16 |
+| 26 |    9 |   17 |   17 |
+| 28 |    3 |   18 |   18 |
++----+------+------+------+

tools/deploy/mysql_test/test_suite/static_engine/t/subplan_filter.test

@@ -290,3 +290,56 @@ select c1,c1 in (select c1 from t2 where t2.c1>=t1.c1) and  c1 in (select c1 fro
 
 
 select c1,c1 in (select c1 from t2 where t2.c1>=t1.c1) and  c1 in (select c1 from t2 where t2.c1 <= t1.c1) or c1 + (select c1 from t2 where t2.c1 = t1.c1) as x, c1+(select c1 from t2 where t2.c1 = t1.c1) > 30 or c1 in  (select c2 from t2 where t2.c1 <= t1.c1) as y,c1+(select c2 from t2 where t1.c1=t2.c1) > 10 and c1 in  (select c1 from t2 where t1.c1>= t2.c1) as z from t1;
+
+--explain_protocol 0
+--disable_warnings
+drop table if exists t1;
+drop table if exists t3;
+--enable_warnings
+
+
+
+create table t1 (c1 int primary key, c2 int, c3 int, c4 int) ;
+create table t3 (c1 int primary key, c2 int, c3 int, c4 int, index(c3)) ;
+
+insert into t1 (c1, c2, c3, c4) values (1, 1, 1, 1);
+insert into t1 (c1, c2, c3, c4) values (2, 2, 2, 2);
+insert into t1 (c1, c2, c3, c4) values (12,9, 3, 3);
+insert into t1 (c1, c2, c3, c4) values (4, 3, 4, 4);
+insert into t1 (c1, c2, c3, c4) values (3, 3, 5, 5);
+insert into t1 (c1, c2, c3, c4) values (9, 10,6, 6);
+insert into t1 (c1, c2, c3, c4) values (7, 4, 7, 7);
+insert into t1 (c1, c2, c3, c4) values (6, 7, 8, 8);
+
+insert into t1 (c1, c2, c3, c4) values (18, 1,9, 9);
+insert into t1 (c1, c2, c3, c4) values (19, 2,10,10);
+insert into t1 (c1, c2, c3, c4) values (20, 3,11,11);
+insert into t1 (c1, c2, c3, c4) values (21, 5,12,12);
+insert into t1 (c1, c2, c3, c4) values (22, 7,13,13);
+insert into t1 (c1, c2, c3, c4) values (23, 7,14,14);
+insert into t1 (c1, c2, c3, c4) values (24, 7,15,15);
+insert into t1 (c1, c2, c3, c4) values (25, 7,16,16);
+insert into t1 (c1, c2, c3, c4) values (26, 9,17,17);
+insert into t1 (c1, c2, c3, c4) values (28, 3,18,18);
+
+insert into t3 (c1, c2, c3, c4) values (1, 1, 1, 1);
+insert into t3 (c1, c2, c3, c4) values (2, 2, 2, 2);
+insert into t3 (c1, c2, c3, c4) values (12,9, 3, 3);
+insert into t3 (c1, c2, c3, c4) values (4, 3, 4, 4);
+insert into t3 (c1, c2, c3, c4) values (3, 3, 5, 5);
+insert into t3 (c1, c2, c3, c4) values (9, 10,6, 6);
+insert into t3 (c1, c2, c3, c4) values (7, 4, 7, 7);
+insert into t3 (c1, c2, c3, c4) values (6, 7, 8, 8);
+
+insert into t3 (c1, c2, c3, c4) values (18, 1,9, 9);
+insert into t3 (c1, c2, c3, c4) values (19, 2,10,10);
+insert into t3 (c1, c2, c3, c4) values (20, 3,11,11);
+insert into t3 (c1, c2, c3, c4) values (21, 5,12,12);
+insert into t3 (c1, c2, c3, c4) values (22, 7,13,13);
+insert into t3 (c1, c2, c3, c4) values (23, 7,14,14);
+insert into t3 (c1, c2, c3, c4) values (24, 7,15,15);
+insert into t3 (c1, c2, c3, c4) values (25, 7,16,16);
+insert into t3 (c1, c2, c3, c4) values (26, 9,17,17);
+insert into t3 (c1, c2, c3, c4) values (28, 3,18,18);
+
+select /*+ no_rewrite*/ * from t1 where exists (select /*+no_unnest */ 1 from t3 where t1.c1 > t3.c3 and t3.c4 < 100 limit 1) ;