diff --git a/dbcon/mysql/ha_mcs_execplan.cpp b/dbcon/mysql/ha_mcs_execplan.cpp
index 3ad93a9e8..8bfd72dba 100755
--- a/dbcon/mysql/ha_mcs_execplan.cpp
+++ b/dbcon/mysql/ha_mcs_execplan.cpp
@@ -4427,7 +4427,7 @@ FunctionColumn* buildCaseFunction(Item_func* item, gp_walk_info& gwi, bool& nonS
             gwi.inCaseStmt = true;
             sptp.reset(buildParseTree((Item_func*)(item->arguments()[i]), gwi, nonSupport));
             gwi.inCaseStmt = false;
-            if (!gwi.ptWorkStack.empty() && *gwi.ptWorkStack.top()->data() == sptp->data())
+            if (!gwi.ptWorkStack.empty() && gwi.ptWorkStack.top()->data() == sptp->data())
             {
                 gwi.ptWorkStack.pop();
             }
diff --git a/mysql-test/columnstore/bugfixes/mcol-4786.result b/mysql-test/columnstore/bugfixes/mcol-4786.result
new file mode 100644
index 000000000..1b374402a
--- /dev/null
+++ b/mysql-test/columnstore/bugfixes/mcol-4786.result
@@ -0,0 +1,11 @@
+DROP DATABASE IF EXISTS mcol4786;
+CREATE DATABASE mcol4786;
+USE mcol4786;
+CREATE TABLE `bd_dwhs_private_ex_pub_services_ins` (`age` int(11) DEFAULT NULL) ENGINE=Columnstore DEFAULT CHARSET=latin1;
+insert into bd_dwhs_private_ex_pub_services_ins select * from seq_1_to_120;
+CREATE OR REPLACE VIEW `dwhs_ins_call_detail_vw` AS select age, case when `bd_dwhs_private_ex_pub_services_ins`.`age` between 16 and 24 then '16-24' when `bd_dwhs_private_ex_pub_services_ins`.`age` between 25 and 34 then '25-34' when `bd_dwhs_private_ex_pub_services_ins`.`age` between 35 and 44 then '35-44' when `bd_dwhs_private_ex_pub_services_ins`.`age` between 45 and 54 then '45-54' when `bd_dwhs_private_ex_pub_services_ins`.`age` between 55 and 64 then '55-64' when `bd_dwhs_private_ex_pub_services_ins`.`age` between 65 and 74 then '65-74' when `bd_dwhs_private_ex_pub_services_ins`.`age` >= 75 then '75+' end AS `age_group` from `bd_dwhs_private_ex_pub_services_ins`;
+select age_group, age, count(*) from dwhs_ins_call_detail_vw where age between 16 and 24 and age_group IN ('35-44') group by age_group,age order by age_group, age;
+age_group	age	count(*)
+DROP VIEW `dwhs_ins_call_detail_vw`;
+DROP TABLE `bd_dwhs_private_ex_pub_services_ins`;
+DROP DATABASE mcol4786;
diff --git a/mysql-test/columnstore/bugfixes/mcol-4786.test b/mysql-test/columnstore/bugfixes/mcol-4786.test
new file mode 100644
index 000000000..22bb857fc
--- /dev/null
+++ b/mysql-test/columnstore/bugfixes/mcol-4786.test
@@ -0,0 +1,22 @@
+
+-- source ../include/have_columnstore.inc
+
+--disable_warnings
+DROP DATABASE IF EXISTS mcol4786;
+--enable_warnings
+
+CREATE DATABASE mcol4786;
+
+USE mcol4786;
+
+CREATE TABLE `bd_dwhs_private_ex_pub_services_ins` (`age` int(11) DEFAULT NULL) ENGINE=Columnstore DEFAULT CHARSET=latin1;
+
+insert into bd_dwhs_private_ex_pub_services_ins select * from seq_1_to_120;
+
+CREATE OR REPLACE VIEW `dwhs_ins_call_detail_vw` AS select age, case when `bd_dwhs_private_ex_pub_services_ins`.`age` between 16 and 24 then '16-24' when `bd_dwhs_private_ex_pub_services_ins`.`age` between 25 and 34 then '25-34' when `bd_dwhs_private_ex_pub_services_ins`.`age` between 35 and 44 then '35-44' when `bd_dwhs_private_ex_pub_services_ins`.`age` between 45 and 54 then '45-54' when `bd_dwhs_private_ex_pub_services_ins`.`age` between 55 and 64 then '55-64' when `bd_dwhs_private_ex_pub_services_ins`.`age` between 65 and 74 then '65-74' when `bd_dwhs_private_ex_pub_services_ins`.`age` >= 75 then '75+' end AS `age_group` from `bd_dwhs_private_ex_pub_services_ins`;
+
+select age_group, age, count(*) from dwhs_ins_call_detail_vw where age between 16 and 24 and age_group IN ('35-44') group by age_group,age order by age_group, age;
+
+DROP VIEW `dwhs_ins_call_detail_vw`;
+DROP TABLE `bd_dwhs_private_ex_pub_services_ins`;
+DROP DATABASE mcol4786;