Teach find_nonnullable_rels to handle OR cases: if every arm of an OR forces a particular relation nonnullable, then we can say that the OR does. This is worth a little extra trouble since it may allow reduction of outer joins to plain joins.
Teach find_nonnullable_rels to handle OR cases: if every arm of an OR
forces a particular relation nonnullable, then we can say that the OR does.
This is worth a little extra trouble since it may allow reduction of
outer joins to plain joins.

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