If the database connection is used by a thread Or None to disable opening transactions implicitly.Ĭheck_same_thread ( bool) – If True (default), ProgrammingError will be raised Isolation_level ( str | None) – The isolation_level of the connection,Ĭontrolling whether and how transactions are implicitly opened.Ĭan be "DEFERRED" (default), "EXCLUSIVE" or "IMMEDIATE" Types cannot be detected for generated fields (for example max(data)),Įven when the detect_types parameter is set str will beīy default ( 0), type detection is disabled. Set it to any combination (using |, bitwise or) ofĬolumn names takes precedence over declared types if both flags are set. Using the converters registered with register_converter(). That table will be locked until the transaction is committed.ĭetect_types ( int) – Control whether and how data types notĪre looked up to be converted to Python types, If another connection opens a transaction to modify a table, Timeout ( float) – How many seconds the connection should wait before raisingĪn OperationalError when a table is locked. Pass ":memory:" to open a connection to a database that is Parametersĭatabase ( path-like object) – The path to the database file to be opened. connect ( database, timeout = 5.0, detect_types = 0, isolation_level = 'DEFERRED', check_same_thread = True, factory = sqlite3.Connection, cached_statements = 128, uri = False ) ¶
DB BROWSER FOR SQLITE DOESNT WRITE DATABASE HOW TO
How to use the connection context managerĮxplanation for in-depth background on transaction control. How to convert SQLite values to custom Python types How to adapt custom Python types to SQLite values Data Source=:memory:Ī sharable, in-memory database identified by the name Sharable.How to use placeholders to bind values in SQL queries Data Source=Reference.db Mode=ReadOnlyĪ private, in-memory database. Data Source=Encrypted.db Password=MyEncryptionKeyĪ read-only database that cannot be modified by the app. Data Source=Application.db Cache=SharedĪn encrypted database. var connectionString = new SqliteConnectionStringBuilder(baseConnectionString)Ī basic connection string with a shared cache for improved concurrency. It can also be used to prevent connection string injection attacks. You can use SqliteConnectionStringBuilder as a strongly typed way of creating connection strings. The Pooling keyword was added in version 6.0. When specified, PRAGMA key is sent immediately after opening the connection. This mode can change the behavior of transaction and table locking. This is the default.Ĭonnections share a cache.
Uses the default mode of the underlying SQLite library. Opens the database for reading and writing. Opens the database for reading and writing, and creates it if it doesn't exist. This keyword also supports URI Filenames. If set, paths are made relative to the DataDirectory application domain property value. Paths that start with the |DataDirectory| substitution string are treated the same as relative paths. For more information, see In-Memory databases. If :memory:, an in-memory database is used. If empty, SQLite creates a temporary on-disk database that's deleted when the connection is closed. SQLite treats paths relative to the current working directory. DataSource (without a space) and Filename are aliases of this keyword. The following connection string keywords can be used with : Data Source Connection strings in įollow the standard ADO.NET syntax as a semicolon-separated list of
A connection string is used to specify how to connect to the database.
0 kommentar(er)
