Attempt to write a readonly database sqlite windows gui

For each column in a row of the result, the name of that column is used as an index in to array and the value of the column is stored in the corresponding array entry. If two or more columns in the result set of a query have the same name, then the last column with that name will overwrite prior values and earlier columns with the same name will be inaccessible. If the array variable name is omitted or is the empty string, then the value of each column is stored in a variable with the same name as the column itself. Tcl variable names can appear in the SQL statement of the second argument in any position where it is legal to put a string or number literal.

Attempt to write a readonly database sqlite windows gui

It allows to copy one row to another in an easy and familiar copy and paste manner, even if the row contains some binary data. This is particularly handy when one is trying to generate some sample data in the database using the already existing valid records.

Background During generation of sample data in the database, arises the need to operate images, binary data, ntext and text data types more easily when executing them in T-SQL. The following article introduces a simple database viewer that should accomplish this task.

attempt to write a readonly database sqlite windows gui

The first is the tree view of SQL Servers and databases which were registered by the application use the right mouse context menu to register a SQL Server.

The second is a custom DataGrid representing the DB's table. If a row in the table contains binary info, our custom DataGrid will represent it as a binary string in contrary to the ordinary default value of a binary type: Please refer to the Class Diagram which is provided with the source code.

Code Overview There are four layers in the application: It also contains a simple implementation of logging operations which uses. NET framework's namespace for debugging and tracing: The framework provides the Trace class in the System.

Diagnostics namespace that can suit our simple logging operations and allow us to add a listener to the Listeners collection of the Trace class. After adding a listener to the Listeners collection, we can write any message using the Trace.

WriteLine method which loops over the listeners in the Listeners collection and writes the desired message according to the listener's type.

Artifact 1faa238401198720acae465f72ec93106050d86c:

We will add a TextWriterTraceListener which redirects its output to an instance of the TextWriter class or to anything that is a Stream class to the Trace.

Listeners collection, as follows: StreamWriter log; if File. Append "-" ; logMessage. Append cls ; logMessage.

The Notes App

Append method ; logMessage. Append " - " ; logMessage. Flush method is called. Instead of calling the Flush method, I prefer to configure the. This is how it's done: Connecting to the DB and manipulating the data is done by SqlConnection and SqlCommand respectively, which are defined as members of the above mentioned class:How can I change an SQLite database from read-only to read-write?

When I executed the update statement, I always got: SQL error: attempt to write a readonly database.

attempt to write a readonly database sqlite windows gui

The SQLite file is a writeable file on the filesystem. nationwidesecretarial.comeption:[SQLITE_READONLY] Attempt to write a readonly database. I tried searching for solutions, but I found solutions like changing the permissions. I did change the permissions of the db as well as the containing folder in windows.

SQLite is a C library that provides a lightweight disk-based database that doesn’t require a separate server process and allows accessing the database using a nonstandard variant of the SQL query language. I don't know why mazen at mindcraftinc dot com is getting that amount of negative votes: in my case, I've constated that with odbc_driver and an Access database, this method is returning ONE extra field appart from what is stated in this manual.

usql is a universal command-line interface for PostgreSQL, MySQL, Oracle, SQLite3, Microsoft SQL Server, and other below is a demonstration using usql with xo's booktest simple test database, showcasing the release version v SQLite allows multiple processes to have the database file open at once, and for multiple processes to read the database at once.

When any process wants to write, it must lock the entire database file for the duration of its update.

we’re pretty happy with SQLite & not urgently interested in a fancier DBMS : programming