Postgres support upgrades

Author: ackleymi

_sql/postgresql/create.bat

@@ -1,3 +1,3 @@
-dropdb -U postgres -q quickfix
+dropdb -U postgres --if-exists quickfix
 createdb -U postgres quickfix
 psql -U postgres -d quickfix -f postgresql.sql

_sql/postgresql/create.sh

@@ -1,3 +1,3 @@
-dropdb -U postgres -q quickfix
+dropdb -U postgres --if-exists quickfix
 createdb -U postgres quickfix
 psql -U postgres -d quickfix -f postgresql.sql

store/sql/sqlstore.go

@@ -118,7 +118,7 @@ func newSQLStore(sessionID quickfix.SessionID, driver string, dataSourceName str
 		return
 	}
 
-	if store.sqlDriver == "postgres" {
+	if store.sqlDriver == "postgres" || store.sqlDriver == "pgx" {
 		store.placeholder = postgresPlaceholder
 	}