UNION cleanup again.
UNION cleanup again.

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