And how do you define "not in"?  For example, given the following:

Create table t1
(
   Id integer primary key,
   Data text
);

Create table t2
(
  Id integer primary key,
  Data text
);

Insert into t1 values (5, 'This is some data');
Insert into t2 values (5, 'This is some more data');

is the row (5, 'This is some data') IN t2 or NOT IN t2?


-- 
The fact that there's a Highway to Hell but only a Stairway to Heaven says a 
lot about anticipated traffic volume.

>-----Original Message-----
>From: sqlite-users <sqlite-users-boun...@mailinglists.sqlite.org> On
>Behalf Of Peng Yu
>Sent: Wednesday, 18 September, 2019 09:50
>To: SQLite mailing list <sqlite-users@mailinglists.sqlite.org>
>Subject: Re: [sqlite] How to do setdiff but update the original table by
>the result?
>
>> I want to find all the rows in table1 that are not in table2 and then
>delete those rows from table1.
>
>It is the above.
>
>--
>Regards,
>Peng
>_______________________________________________
>sqlite-users mailing list
>sqlite-users@mailinglists.sqlite.org
>http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users



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