diff --git a/sqlFunctions.R b/sqlFunctions.R
index a0b91fb..c13e39e 100644
--- a/sqlFunctions.R
+++ b/sqlFunctions.R
@@ -74,27 +74,31 @@ sqlGenOVID<-function(conn=dta, nhcs=nhc.test, verb=T, sinc=F, dbtype=NULL){
   dbid<-sqlFetch(conn,db["dbcode"])
   
   new.nhc<-nhcs[!nhcs %in% dbid$NHC]
-  next.num<-gsub(db["dbcode"],"",dbid[,db["dbcode"]]) %>% as.numeric %>% max(na.rm=T)+1
-  last.num<-next.num+(length(new.nhc)-1)
-  newtab<-data.frame("NHC"=new.nhc, "ID"=sprintf("%s%04d",db["dbcode"],next.num:last.num)) %>% rename(!!db["dbcode"]:="ID")
-  if(dbtype=="OV"){
-    dbid<-rbind(dbid,newtab)
-  }
-  if(dbtype=="UM"){
-    dbid<-merge(dbid, newtab, all=T) %>% select(Id,NHC,UMID) %>% arrange(Id)
-    dbid$Id<-as.numeric(rownames(dbid))
-    dbid$NHC<-as.numeric(dbid$NHC)
-  }
-  rownames(dbid)<-as.character(1:nrow(dbid))
-  dbid<-filter(dbid, NHC %in% new.nhc) %>% mutate(NHC=as.character(NHC))
-  
-  if (sinc){
-    ### !! Atención, esto cambia la base de datos:
-    sqlSave(conn, dbid, tablename=db["dbcode"], append = T)
-    print("La base ha sido actualizada.")
-  }
-  if (verb){
-    return(dbid)
+  if(length(new.nhc) > 0){
+    next.num<-gsub(db["dbcode"],"",dbid[,db["dbcode"]]) %>% as.numeric %>% max(na.rm=T)+1
+    last.num<-next.num+(length(new.nhc)-1)
+    newtab<-data.frame("NHC"=new.nhc, "ID"=sprintf("%s%04d",db["dbcode"],next.num:last.num)) %>% rename(!!db["dbcode"]:="ID")
+    if(dbtype=="OV"){
+      dbid<-rbind(dbid,newtab)
+    }
+    if(dbtype=="UM"){
+      dbid<-merge(dbid, newtab, all=T) %>% select(Id,NHC,UMID) %>% arrange(Id)
+      dbid$Id<-as.numeric(rownames(dbid))
+      dbid$NHC<-as.numeric(dbid$NHC)
+    }
+    rownames(dbid)<-as.character(1:nrow(dbid))
+    dbid<-filter(dbid, NHC %in% new.nhc) %>% mutate(NHC=as.character(NHC))
+    
+    if (sinc){
+      ### !! Atención, esto cambia la base de datos:
+      sqlSave(conn, dbid, tablename=db["dbcode"], append = T)
+      print("La base ha sido actualizada.")
+    }
+    if (verb){
+      return(dbid)
+    }
+  }else{
+    print("No hay pacientes nuevos.")
   }
 }