Re: [sqlite] Missing data on SELECT

[jose isaias cabrera]

You're right.  Apologies.  The right SELECT would be,
SELECT cl.ProjID FROM ProjectsMine cl JOIN ProjectsALL ls ON
(
  cl.id = ls.id AND
  cl.login = 'id0' AND
  cl.ProjID > 3 AND
  cl.XtraB != ls.XtraB
);

To answer your question, and a long story made short, this is a SELECT to 
see which items have changed between two DBs. id=10 existed in ProjectsALL, 
but an error caused the deletion of id=10.  However, this id 10 lives in 
another DB (ProjectsMine).  I would like the SELECT to tell me that  id=10 
which exists in ProjectsMine, needs to be updated and PUSHED to ProjectsALL 
because it does not exists there.  Maybe, I am going to have to do two 
SELECTS, one that tells me which ProjID exists in ProjectsMine, but donot 
exists in ProjectsAll.  These must be INSERTED into ProjectsALL.  And then 
do the SELECT above to get which have changed the XtraB date.  I hope this 
explains everything.  Thanks for the help.

-----Original Message----- 
From: Keith Medcalf
Sent: Thursday, November 2, 2017 8:26 PM
To: SQLite mailing list
Subject: Re: [sqlite] Missing data on SELECT


I think your query is in error.  Amongst other things, tou have the same 
condition listed twice:

SELECT cl.ProjID FROM ProjectsMine cl JOIN ProjectsALL ls ON
(
  cl.id = ls.id AND
  cl.login = 'id0' AND
  cl.id = ls.id AND                 <<<< DUPLICATE
  cl.XtraB != ls.XtraB
);

You cannot return a result which does not exist, and if you delete id=10 
from the ProjectsALL table there will be no project in either table that has 
id=10.  How do you expect to return an id of 10 when that id does no exist?

What exactly, in English, is it that you are trying to achieve (ie, what is 
the PROBLEM STATEMENT for which you are trying to find a solution)?

---
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 [mailto:sqlite-users-
boun...@mailinglists.sqlite.org] On Behalf Of jose isaias cabrera
Sent: Thursday, 2 November, 2017 16:02
To: SQLite mailing list
Subject: [sqlite] Missing data on SELECT


Greetings.

Apologies for the long email, or long set of data.  I have these two
tables in two different database files, but for easy setup, I have
place them in the same DB.  Having these data,


CREATE TABLE ProjectsALL
(
 id integer primary key, ProjID integer, login, cust, proj, XtraB
);
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(1,'id0','A','aaa','2017-06-02 15:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(2,'id1','B','bbb','2017-06-03 12:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(3,'id2','A','ccc','2017-08-02 11:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(4,'id2','A','ccc','2017-09-02 17:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(5,'id3','A','ccc','2017-10-02 19:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(6,'id1','C','ccc','2017-10-02 18:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(7,'id1','C','ccc','2017-10-03 13:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(8,'id3','A','ccc','2017-10-04 14:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(9,'id0','A','ccc','2017-10-05 10:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(10,'id0','A','aaa','2017-06-02 15:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(11,'id0','A','aaa','2017-06-02 15:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(12,'id1','B','bbb','2017-06-03 12:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(13,'id2','A','ccc','2017-08-02 11:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(14,'id2','A','ccc','2017-09-02 17:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(15,'id3','A','ccc','2017-10-02 19:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(16,'id1','C','ccc','2017-10-02 18:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(17,'id1','C','ccc','2017-10-03 13:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(18,'id3','A','ccc','2017-10-04 14:30:19');
INSERT INTO ProjectsALL(ProjID, login, cust, proj, XtraB) VALUES
(19,'id0','A','ccc','2017-10-05 10:30:19');


CREATE TABLE ProjectsMine
(
 id integer primary key, ProjID integer, login, cust, proj, XtraB
);
INSERT INTO ProjectsMine (ProjID, login, cust, proj, XtraB) VALUES
(1,'id0','A','aaa','2017-06-02 15:30:19');
INSERT INTO ProjectsMine (ProjID, login, cust, proj, XtraB) VALUES
(2,'id1','B','bbb','2017-06-03 12:30:19');
INSERT INTO ProjectsMine (ProjID, login, cust, proj, XtraB) VALUES
(3,'id2','A','ccc','2017-08-02 11:30:19');
INSERT INTO ProjectsMine (ProjID, login, cust, proj, XtraB) VALUES
(4,'id2','A','ccc','2017-09-02 17:30:19');
INSERT INTO ProjectsMine (ProjID, login, cust, proj, XtraB) VALUES
(5,'id3','A','ccc','2017-10-02 19:30:19');
INSERT INTO ProjectsMine (ProjID, login, cust, proj, XtraB) VALUES
(6,'id1','C','ccc','2017-10-02 18:30:19');
INSERT INTO ProjectsMine (ProjID, login, cust, proj, XtraB) VALUES
(7,'id1','C','ccc','2017-10-03 13:30:19');
INSERT INTO ProjectsMine (ProjID, login, cust, proj, XtraB) VALUES
(8,'id3','A','ccc','2017-10-04 14:30:19');
INSERT INTO ProjectsMine (ProjID, login, cust, proj, XtraB) VALUES
(9,'id0','A','ccc','2017-10-15 10:30:19');

running this SELECT,

SELECT cl.ProjID FROM ProjectsMine cl JOIN ProjectsALL ls ON
(
  cl.id = ls.id AND
  cl.login = 'id0' AND
  cl.id = ls.id AND
  cl.XtraB != ls.XtraB
);

would give, 9.  Now let's delete record 10 on the ProjectsALL table,

delete from ProjectsAll where id=10;

after deleting record 10 and running the same SELECT above,

sqlite> SELECT cl.ProjID FROM ProjectsMine cl JOIN ProjectsALL ls ON
  ...> (
  ...>    cl.id = ls.id AND
  ...>    cl.login = 'id0' AND
  ...>    cl.id = ls.id AND
  ...>    cl.XtraB != ls.XtraB
  ...> );
9

I still get 9.  I also want 10 to be part of the result.  I know it's
no longer there, but I would also like to have it as part of the
result because this part of the select cl.XtraB != ls.XtraB matches.
Any easy way to do this?  In other words, when I run the SELECT, I
want the the items that match the SELECT and any items that are not
in the ALL table.  Thanks.

josé

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