Disallow zero-length delimited identifier (per SQL).
Disallow zero-length delimited identifier (per SQL).

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