get_expr_result_type probably needs to be able to handle OpExpr as well as FuncExpr, to cover cases where a function returning tuple is invoked via an operator.
get_expr_result_type probably needs to be able to handle OpExpr as well
as FuncExpr, to cover cases where a function returning tuple is invoked
via an operator.

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