Removed alter table drop column.
Removed alter table drop column.

chrishajas/gpdb,Postgres-XL/Postgres-XL,atris/gpdb,Postgres-XL/Postgres-XL,zaksoup/gpdb,rvs/gpdb,ovr/postgres-xl,kaknikhil/gpdb,50wu/gpdb,foyzur/gpdb,CraigHarris/gpdb,ashwinstar/gpdb,kaknikhil/gpdb,zeroae/postgres-xl,lpetrov-pivotal/gpdb,Chibin/gpdb,cjcjameson/gpdb,arcivanov/postgres-xl,jmcatamney/gpdb,edespino/gpdb,edespino/gpdb,adam8157/gpdb,tangp3/gpdb,adam8157/gpdb,rubikloud/gpdb,kaknikhil/gpdb,snaga/postgres-xl,lpetrov-pivotal/gpdb,ashwinstar/gpdb,atris/gpdb,foyzur/gpdb,lisakowen/gpdb,xuegang/gpdb,yazun/postgres-xl,lintzc/gpdb,greenplum-db/gpdb,oberstet/postgres-xl,edespino/gpdb,rvs/gpdb,rubikloud/gpdb,postmind-net/postgres-xl,ovr/postgres-xl,greenplum-db/gpdb,cjcjameson/gpdb,oberstet/postgres-xl,xinzweb/gpdb,Quikling/gpdb,foyzur/gpdb,ahachete/gpdb,royc1/gpdb,tpostgres-projects/tPostgres,pavanvd/postgres-xl,pavanvd/postgres-xl,Quikling/gpdb,atris/gpdb,Chibin/gpdb,edespino/gpdb,xuegang/gpdb,ahachete/gpdb,chrishajas/gpdb,yazun/postgres-xl,kmjungersen/PostgresXL,Chibin/gpdb,arcivanov/postgres-xl,postmind-net/postgres-xl,kaknikhil/gpdb,CraigHarris/gpdb,xinzweb/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,yazun/postgres-xl,rvs/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,ahachete/gpdb,xinzweb/gpdb,zeroae/postgres-xl,0x0FFF/gpdb,CraigHarris/gpdb,Quikling/gpdb,kaknikhil/gpdb,kaknikhil/gpdb,tangp3/gpdb,tangp3/gpdb,foyzur/gpdb,rubikloud/gpdb,techdragon/Postgres-XL,edespino/gpdb,foyzur/gpdb,rvs/gpdb,rubikloud/gpdb,jmcatamney/gpdb,xinzweb/gpdb,yuanzhao/gpdb,tangp3/gpdb,lisakowen/gpdb,cjcjameson/gpdb,xuegang/gpdb,chrishajas/gpdb,postmind-net/postgres-xl,janebeckman/gpdb,rubikloud/gpdb,randomtask1155/gpdb,oberstet/postgres-xl,snaga/postgres-xl,yuanzhao/gpdb,Postgres-XL/Postgres-XL,xuegang/gpdb,tangp3/gpdb,zaksoup/gpdb,ashwinstar/gpdb,xinzweb/gpdb,adam8157/gpdb,atris/gpdb,yuanzhao/gpdb,zaksoup/gpdb,50wu/gpdb,0x0FFF/gpdb,Postgres-XL/Postgres-XL,Chibin/gpdb,janebeckman/gpdb,royc1/gpdb,ahachete/gpdb,cjcjameson/gpdb,cjcjameson/gpdb,kaknikhil/gpdb,edespino/gpdb,lintzc/gpdb,xinzweb/gpdb,kmjungersen/PostgresXL,zeroae/postgres-xl,adam8157/gpdb,Chibin/gpdb,pavanvd/postgres-xl,royc1/gpdb,ovr/postgres-xl,lintzc/gpdb,lintzc/gpdb,rvs/gpdb,atris/gpdb,tpostgres-projects/tPostgres,rubikloud/gpdb,pavanvd/postgres-xl,chrishajas/gpdb,janebeckman/gpdb,randomtask1155/gpdb,CraigHarris/gpdb,randomtask1155/gpdb,atris/gpdb,Chibin/gpdb,lpetrov-pivotal/gpdb,Chibin/gpdb,tpostgres-projects/tPostgres,yuanzhao/gpdb,lintzc/gpdb,tpostgres-projects/tPostgres,atris/gpdb,kaknikhil/gpdb,50wu/gpdb,chrishajas/gpdb,lisakowen/gpdb,lpetrov-pivotal/gpdb,ahachete/gpdb,lisakowen/gpdb,arcivanov/postgres-xl,cjcjameson/gpdb,janebeckman/gpdb,adam8157/gpdb,greenplum-db/gpdb,adam8157/gpdb,jmcatamney/gpdb,0x0FFF/gpdb,randomtask1155/gpdb,randomtask1155/gpdb,zaksoup/gpdb,lintzc/gpdb,arcivanov/postgres-xl,ovr/postgres-xl,CraigHarris/gpdb,foyzur/gpdb,CraigHarris/gpdb,zaksoup/gpdb,rvs/gpdb,janebeckman/gpdb,kmjungersen/PostgresXL,lpetrov-pivotal/gpdb,lpetrov-pivotal/gpdb,0x0FFF/gpdb,oberstet/postgres-xl,Quikling/gpdb,zaksoup/gpdb,Quikling/gpdb,janebeckman/gpdb,edespino/gpdb,edespino/gpdb,Postgres-XL/Postgres-XL,50wu/gpdb,Quikling/gpdb,chrishajas/gpdb,ashwinstar/gpdb,kaknikhil/gpdb,lisakowen/gpdb,rvs/gpdb,chrishajas/gpdb,zaksoup/gpdb,xuegang/gpdb,royc1/gpdb,xuegang/gpdb,zeroae/postgres-xl,0x0FFF/gpdb,lpetrov-pivotal/gpdb,50wu/gpdb,janebeckman/gpdb,yuanzhao/gpdb,janebeckman/gpdb,lintzc/gpdb,cjcjameson/gpdb,xinzweb/gpdb,CraigHarris/gpdb,50wu/gpdb,janebeckman/gpdb,foyzur/gpdb,50wu/gpdb,Chibin/gpdb,lisakowen/gpdb,techdragon/Postgres-XL,Quikling/gpdb,yazun/postgres-xl,yuanzhao/gpdb,greenplum-db/gpdb,randomtask1155/gpdb,postmind-net/postgres-xl,techdragon/Postgres-XL,rvs/gpdb,tangp3/gpdb,cjcjameson/gpdb,Quikling/gpdb,royc1/gpdb,greenplum-db/gpdb,pavanvd/postgres-xl,lisakowen/gpdb,xuegang/gpdb,zeroae/postgres-xl,snaga/postgres-xl,kmjungersen/PostgresXL,foyzur/gpdb,lisakowen/gpdb,50wu/gpdb,kaknikhil/gpdb,royc1/gpdb,Quikling/gpdb,xuegang/gpdb,kmjungersen/PostgresXL,ahachete/gpdb,yazun/postgres-xl,rvs/gpdb,snaga/postgres-xl,jmcatamney/gpdb,jmcatamney/gpdb,rvs/gpdb,postmind-net/postgres-xl,xuegang/gpdb,jmcatamney/gpdb,Chibin/gpdb,tangp3/gpdb,yuanzhao/gpdb,Quikling/gpdb,edespino/gpdb,CraigHarris/gpdb,0x0FFF/gpdb,randomtask1155/gpdb,cjcjameson/gpdb,adam8157/gpdb,rubikloud/gpdb,Chibin/gpdb,janebeckman/gpdb,tpostgres-projects/tPostgres,0x0FFF/gpdb,arcivanov/postgres-xl,snaga/postgres-xl,yuanzhao/gpdb,xinzweb/gpdb,ashwinstar/gpdb,cjcjameson/gpdb,greenplum-db/gpdb,lpetrov-pivotal/gpdb,royc1/gpdb,techdragon/Postgres-XL,royc1/gpdb,tangp3/gpdb,ahachete/gpdb,atris/gpdb,yuanzhao/gpdb,zaksoup/gpdb,arcivanov/postgres-xl,rubikloud/gpdb,oberstet/postgres-xl,ahachete/gpdb,randomtask1155/gpdb,greenplum-db/gpdb,lintzc/gpdb,CraigHarris/gpdb,techdragon/Postgres-XL,yuanzhao/gpdb,greenplum-db/gpdb,adam8157/gpdb,lintzc/gpdb,ovr/postgres-xl,0x0FFF/gpdb,edespino/gpdb,chrishajas/gpdb,ashwinstar/gpdb