gfphoenix78 commented on code in PR #1163:
URL: https://github.com/apache/cloudberry/pull/1163#discussion_r2165269739


##########
src/test/regress/sql/misc_jiras.sql:
##########
@@ -70,3 +70,8 @@ from gp_dist_random('gp_distribution_policy') where localoid 
= 't2_17271'::regcl
 drop table t_17271;
 drop table t1_17271;
 drop table t2_17271;
+
+-- Github Issue 1055
+-- AO column storage not supported for zero-column tables
+set default_table_access_method = ao_column;

Review Comment:
   Please add more test cases here:
   1. `alter table ... drop column ...` to drop columns one by one until to 
zero-column.
   2. `alter table ... set access method` from other type of table storage to 
aocs.



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