What you’re looking for is called the data dictionary. In sqlite a list of all tables can be found by querying sqlite_master table (or view?) sqlite> create table people (first_name varchar, last_name varchar, email_address varchar); sqlite> select * from sqlite_master; table|people|people|2|CREATE TABLE people (first_name varchar, last_name varchar, email_address varchar) To get column information you can … Read more
From a sqlite prompt: sqlite> .read db.sql Or: cat db.sql | sqlite3 database.db Also, your SQL is invalid – you need ; on the end of your statements: create table server(name varchar(50),ipaddress varchar(15),id init); create table client(name varchar(50),ipaddress varchar(15),id init);
System.Data.SQLite.dll is a mixed assembly, i.e. it contains both managed code and native code. Therefore a particular System.Data.SQLite.dll is either x86 or x64, but never both. Update (courtesy J. Pablo Fernandez): Cassini, the development web server used by Visual Studio when you press F5 or click the green «play» button, is x86 only which means … Read more
Just try this: Bitmap bitmap = BitmapFactory.decodeFile(“/path/images/image.jpg”); ByteArrayOutputStream blob = new ByteArrayOutputStream(); bitmap.compress(CompressFormat.PNG, 0 /* Ignored for PNGs */, blob); byte[] bitmapdata = blob.toByteArray(); If bitmapdata is the byte array then getting Bitmap is done like this: Bitmap bitmap = BitmapFactory.decodeByteArray(bitmapdata, 0, bitmapdata.length); Returns the decoded Bitmap, or null if the image could not be … Read more
SQlite does not have a specific datetime type. You can use TEXT, REAL or INTEGER types, whichever suits your needs. Straight from the DOCS SQLite does not have a storage class set aside for storing dates and/or times. Instead, the built-in Date And Time Functions of SQLite are capable of storing dates and times as … Read more
Update: SQLite 2021-03-12 (3.35.0) now supports DROP COLUMN. The FAQ on the website is still outdated. From: http://www.sqlite.org/faq.html: (11) How do I add or delete columns from an existing table in SQLite. SQLite has limited ALTER TABLE support that you can use to add a column to the end of a table or to change … Read more
Perhaps you can make your BaseDao like this. secure the upsert operation with @Transaction, and try to update only if insertion is failed. @Dao public abstract class BaseDao<T> { /** * Insert an object in the database. * * @param obj the object to be inserted. * @return The SQLite row id */ @Insert(onConflict = … Read more
There is a mysql2sqlite.sh script on GitHub As described in the header, the script can be used like this: ./mysql2sqlite.sh myDbase | sqlite3 database.sqlite alternatives an updated version https://github.com/dumblob/mysql2sqlite A simpler script was posted at the the MySQL Forums
From django doc: SQLite is meant to be a lightweight database, and thus can’t support a high level of concurrency. OperationalError: database is locked errors indicate that your application is experiencing more concurrency than sqlite can handle in default configuration. This error means that one thread or process has an exclusive lock on the database … Read more
As others pointed out already, REGEXP calls a user defined function which must first be defined and loaded into the the database. Maybe some sqlite distributions or GUI tools include it by default, but my Ubuntu install did not. The solution was sudo apt-get install sqlite3-pcre which implements Perl regular expressions in a loadable module … Read more