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SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world. The source code for SQLite is in the public domain. This tutorial will give you a quick start with SQLite and make you comfortable with SQLite programming.
This tutorial has been prepared for beginners to help them understand the basic-to-advanced concepts related to SQLite Database Engine.
Before you start practicing various types of examples given in this reference, we assume that you are already aware about what is a database, especially RDBMS and what is a computer programming language.
(1) By Bsy (Bshuyi) on 2021-07-02 03:50:18[link][source]
The result query from the SQLite is incorrect.
Some data are not being calculate by the formula but the data are included in the result table.
There are 10 row data, but only 9 row data is calculate, the another 1 row data is not calculate.
select (amount * rate) as cost
from report_A
Example:
Raw data: | Amount | Raterow 1 | 100 | 0.12row 2 | 50 | 0.15row 3 | 20 | 0.005row 4 | 60 | 0.13row 5 | 10 | 0.15row 6 | 67 | 0.005row 7 | 50 | 0.001row 8 | 87 | 0.006row 9 | 12 | 0.005row 10 | 43 | 0.12
Result:
| Amount | Rate | Cost | |
|---|---|---|---|
| row 1 | 100 | 0.12 | 12 |
| row 2 | 50 | 0.15 | 7.5 |
| row 3 | 20 | 0.005 | 0.1 |
| row 4 | 60 | 0.13 | 7.8 |
| row 5 | 10 | 0.15 | 1.5 |
| row 6 | 67 | 0.005 | 0.335 |
| row 7 | 50 | 0.001 | 0.05 |
| row 8 | 87 | 0.006 | 0.522 |
| row 9 | 12 | 0.005 | 0.06 |
| row 10 | 43 | 0.12 | 0 |
Expected Result:
| Amount | Rate | Cost | |
| row 1 | 100 | 0.12 | 12 |
| row 2 | 50 | 0.15 | 7.5 |
| row 3 | 20 | 0.005 | 0.1 |
| row 4 | 60 | 0.13 | 7.8 |
| row 5 | 10 | 0.15 | 1.5 |
| row 6 | 67 | 0.005 | 0.335 |
| row 7 | 50 | 0.001 | 0.05 |
| row 8 | 87 | 0.006 | 0.522 |
| row 9 | 12 | 0.005 | 0.06 |
| row 10 | 43 | 0.12 | 5.16 |
(2) By anonymous on 2021-07-02 04:22:39in reply to 1[link][source]
Which program do you use and which sqlite Version? Is ist always the last record in answer table?
(3) By Bsy (Bshuyi) on 2021-07-02 05:35:24in reply to 2[link][source]
SQLite Studio 3.2.1
Not always the last record in answer table.
It is in the between of the set of data.
(4) By Larry Brasfield (larrybr) on 2021-07-02 05:35:39in reply to 1[link][source]
I executed this DDL to begin reproducing your incorrect result: CREATE TABLE report_A (row INTEGER, amount INTEGER, rate REAL);
Then I used your so-called raw data to create, then execute this DML: INSERT INTO report_A VALUES(1,100,0.120); INSERT INTO report_A VALUES(2,50,0.150); INSERT INTO report_A VALUES(3,20,0.005); INSERT INTO report_A VALUES(4,60,0.130); INSERT INTO report_A VALUES(5,10,0.150); INSERT INTO report_A VALUES(6,67,0.005); INSERT INTO report_A VALUES(7,50,0.001); INSERT INTO report_A VALUES(8,87,0.006); INSERT INTO report_A VALUES(9,12,0.005); INSERT INTO report_A VALUES(10,43,0.120);
Then, upon executing this query, SELECT row, (amount*rate) as cost FROM report_A;, I see this result set:1|12.02|7.53|0.14|7.85|1.56|0.3357|0.058|0.5229|0.0610|5.16
To me, it looks like the correct result. I get the same result with all versions of the SQLite CLI that I have tried. So you must be doing something different. What would that be? I suspect that difference is important.
(5) By Larry Brasfield (larrybr) on 2021-07-02 05:42:33in reply to 3[link][source]
You should understand that 'SQLite Studio' is not a product of the SQLite development team, and this forum is not the right place to deal with that product's misbehavior.
What Is Sqlitestudio
If you can reduce your problem to something reproducible with the CLI shell available at the SQLite Download page, that will be on-topic here. I submit that your effort to reduce the problem that way is likely to reveal what is going wrong with your use of SQLite Studio. And if you end up showing that the problem is unique to SQLite Studio, you should bring it to the attention of that product's developers.
(6) By Stephan Beal (stephan) on 2021-07-02 05:45:21in reply to 3[link][source]
SQLite Studio 3.2.1
Sqlite Studio 3
SQLite Studio is a 3rd-party project neither maintained nor supported by this project. If you can reproduce your query result with the sqlite3 CLI application (as Larry attempts in his response), the libsqlite3 C API, or the System.Data dot-net bindings for that API, this is the correct forum. If you can't reproduce it in one those then the SQLite Studio team is your best bet.
(7) By TripeHound on 2021-07-02 06:09:17in reply to 1[link][source]
It may be worth running the query:
to see if any of the values are, for example, being stored as text.
(8) By Ryan Smith (cuz) on 2021-07-02 10:30:14in reply to 7[source]
It shouldn't matter - See example below where I make text columns and sometimes populate text and sometimes numbers, SQLite is ambivalent:
Still a good idea to run the typeof() query though, just in case we learn something else. My bet is however the program he uses is getting it wrong - I think it's the same program recently mentioned in another thread where it didn't deal correctly with Windows UAC - perhaps it's just a tad old.