New in sqlite and terminal commands,so may be this is simple.I was trying to create a DB table via terminal(studying)
sqlite> insert into game values ('fallout','rpg');
sqlite> insert into game values ('final fantasy','rpg');
sqlite> insert into game values ('gaame3','stealth');
sqlite> insert into game values ('hitman','rpg');
sqlite> select * from ame where type='rpg'
...> select * from game
...>
...>
Created a table game and load values into it.When i entered a query to see the data.i mistyped the name of the table and i got this
...>
How can i get back to the normal state ,Cntrl+Z worked but it changed back to the state where i started.Is there a way i can reach back to this.
sqlite>
without typing in
sqlite3 test.sqlite3
again
Ok found the problem:
to the problem.It is that i missed the ; in the code entered so the terminal thinks the command did not terminate.
Solution :
Add the ; into the terminal and the new line of sqlite is open
Thanks joachim-isaksson for the comments
Related
While using sqlite3, I have encountered a strange case.
Firstly I create a database like this:
$ sqlite3 ./test.db
sqlite> CREATE VIRTUAL TABLE dummy USING fts3(tokenize=simple);
sqlite> CREATE VIEW testview AS SELECT(
...> (SELECT fts3_tokenizer('simple', x'deadbeefdeadbeef')) +
...> (SELECT * FROM dummy)
...> );
sqlite> .quit
Then I open it again.
$ sqlite3 ./test.db
sqlite> SELECT * FROM dummy;
sqlite> .quit
Of course nothing happens as dummy is an empty table.
I reclaim tokenizer 'simple' before it.
$ sqlite3 ./test.db
sqlite> SELECT fts3_tokenizer('simple', x'deadbeefdeadbeef');
sqlite> SELECT * FROM dummy;
[1] 33079 segmentation fault (core dumped) ./sqlite3 test.db
It crashs, because I have changed the virtual table of tokenizer 'simple', and when I SELECT the table dummy the first time since sqlite start, sqlite will use fts3 xCREATE function to "recreate" the table.
Strange thing happens as I do this two things in the view, which is just created at the begining - testview.
$ sqlite3 ./test.db
sqlite> SELECT * FROM testview;
sqlite> .quit
Nothing happened. It seems as if the first subquery in testview is just executed after the second, which is counterintuitive. No matter how I change the order, "SELECT * FROM dummy" seems always executed at first.
So my question is, why does it preform like this, and, how can I ensure "SELECT fts3_tokenizer('simple', x'deadbeefdeadbeef');" happens before "SELECT * FROM dummy;", so I can trigger the crash.
I'm trying to create a database with SQLite3 but each time I run sqlite3 test.db it just takes me onto a new line and no database is created. I assumed I had to add a table to the database as well so I created one and once done it just says Error: near "sqlite3": syntax error. So creating a table to complete the database creation was not the issue. I have searched all over the web and each resource is telling me to do the same thing I have been doing that only results in an error. If this is the same syntax all other online resources are using successfully, why is it constantly failing to create a database for me?
Here is a screenshot of the exact attempt:
You seem to have the order/placement of commands mixed up. From the folder containing SQLite on your system, you should create a database via sqlite3 somedb.db:
C:\path\to\sqlite>sqlite3 test.db;
sqlite> <-- prompt lets you know that you have connected
Once you have connected to that database, you don't need to specify it again for operations intended against that database. So, I expect the following CREATE TABLE statement to work:
sqlite> CREATE TABLE test.testtbl (
...> col1 text,
...> col2 text,
...> col3 text);
I am new to sqlite3 but this seems strange for any dbms
I was trying to create the following table but mistyped decimal to dcimal
sqlite> CREATE TABLE ac(
...> name char(4),
...> pay dcimal(18,5)
...> );
However it allowed me to create the table.
To add to my surprise I tested the below CREATE TABLE
sqlite> CREATE TABLE ac(
...> name r(4),
...> pay l(18,5)
...> );
in both cases not only it allows me to create table but also allows me to insert and retrieve data from it.
sqlite> insert into ac values ('dbcd',18.2);
sqlite> select * from ac;
dbcd|18.2
Is there any way to enforce strict syntax checks, so that it error outs on these junk data types ?
Thanks
Sam
No.
SQLite uses dynamic typing, so it does not care whether you are using dcimal or fluffy bunnies or no data type at all.
How to return auto generated column values from sqlite database in c#. I'm using Sqlite.data.dll.
Tried by executing query : "select last_insert_rowid() but it doesn;t seem to work as it is returning 0s. I'm using SqliteDataReader object to get the result.
Thanks
I tried these commands, and it worked fine (even if the last_insert_rowid() call is from another transaction):
sqlite> create table mytable(pk integer primary key, other stuff);
sqlite> insert into mytable values(null, 42);
sqlite> select last_insert_rowid();
1
The only requirement of last_insert_rowid() is that it is called on the same database connection; please check that you didn't open another one.
is your id is incremented? then try this:
SELECT max(id)
or you can refer to this post
Click HERE
I set up a SQLite Database DB Connection via the CF Admin after installing the JDBC Driver. After setting it up I got a successful connection message. I also know that I connected successfully because if I run a simple select query it doesn't fail out and if I run a CFDump it shows the proper columns. To further test this simple select statement, if I changed the table name it does fail. So, it's not a connection issue.
I am simply trying to insert records into a table and then check to see if those records were added. These are the queries I am using:
<cfquery datasource="fooDB" name="foo">
INSERT INTO FooTable
(FooColumn)
VALUES
('Test')
</cfquery>
<cfquery datasource="fooDB" name="checkIfwasSuccessful">
SELECT *
FROM FooTable
</cfquery>
This is my SQlite table creator:
CREATE TABLE FooTable (
id INTEGER PRIMARY KEY,
FooColumn TEXT,
OtherColumn1 TEXT,
OtherCOlumn2 TEXT
);
The CFDump of the query checkIfwasSuccessful is an empty result.
Any ideas??
Thank you in advance!!
Use Cftransaction to verify that your query is being commmited.
Have you tried either a) supplying an id with the insert, or b) using the AUTOINCREMENT keyword after PRIMARY KEY?