Let’s say that the median is the element in the middle of an ordered list. SQLite (4 or 3) does not have any built-in function for that, but it’s possible to do this by hand: SELECT x FROM MyTable ORDER BY x LIMIT 1 OFFSET (SELECT COUNT(*) FROM MyTable) / 2 When there is an … Read more
Are you sure foreign key support is enabled? Assuming the library is compiled with foreign key constraints enabled, it must still be enabled by the application at runtime, using the PRAGMA foreign_keys command. For example: sqlite> PRAGMA foreign_keys = ON;
This can be accomplished with a little bit of magic using string concatenation and the substr function. Long story short, here’s what you want: select substr(‘0000000000’||’1234′, -10, 10) An explanation follows. First, know that SQLite’s string concatenation operator is ||. We’ll start by taking a string that is as long as the value we want … Read more
Table B has rows whose foreign key references the primary key value of the Table A row you are trying to delete so deleting it would violate the integrity of your database. You could include ON DELETE CASCADE in your foreign key definition. With that, when you delete an entry from Table A, any entries … Read more
a IS b and a IS NOT b is the general form where a and b are expressions. This is generally only seen in a IS NULL and a IS NOT NULL cases. There are also ISNULL and NOTNULL (also NOT NULL) operators which are short-hands for the previous expressions, respectively (they only take in … Read more
This should fixed my issue. Add the following DLLs. Microsoft Visual C++ Runtime Package SQLite for Windows Runtime
Short Solution Though not answering the question, the way to fix “Database not found” issue is to replace the following line in database.php: ‘database’ => env(‘DB_DATABASE’, database_path(‘database.sqlite’)), with ‘database’ => database_path(‘database.sqlite’),
The SQLite grammar is a bit different from the SQL-92 spec’s, according to which, the following are illegal: *OUTER JOIN *NATURAL OUTER JOIN *NATURAL CROSS JOIN The first two, because a <join type>, in order to contain OUTER, must also include an <outer join type> before it. The last, because NATURAL can only occur in … Read more
Try this: UPDATE tableName SET destinationField = sourceField
You’re looking for BLOB. From the webpage: BLOB – The value is a blob of data, stored exactly as it was input. Here’s an example of making a table with two columns – an id and some data, which is a BLOB: CREATE TABLE t1 (id INTEGER PRIMARY KEY, data BLOB);