Question: I have a db with records like the following structure in the table;

```
 id,msg,date,fid 
 19 ,"start","2012-02",NULL
 20 ,"end","2012-03",19
 21 , "start",2012-04,NULL

```

I have and entire db set up like this where the fid in some cases matches the id of another record. Id like to return all records that have matching start and end dates and just the start date if it doesn't have a corresponding end date fid like below: 

```
19 ,"start","2012-02","end","2012-03"
21 , "start,"2012-04,"",NULL

```

Answer: 
It is Probably because of JDK version as mention above. 
You can verify by running react native doctor

```
npx @react-native-community/cli doctor

```
This link is the complete solution but here is a little problem if you have win32 but if you have win64 you are good to go.

```
 **https://www.npmjs.com/package/jetifier#do_you_need_this**

```

hope this answer will be useful for you
feel free for any problem.