While inside the context, you used cursor to execute a query and fetch the results. ... See Fetch Methods for an example. Cursor.description ¶ This read-only attribute is a sequence of 7-item sequences. An example usage is to get another cursor: ... (This is known as manifest typing which is also the way that Python works. The task is to select all employees hired in the year 1999 and print their names and hire dates to the console. You can create it using the cursor() method. The description Attribute . Column metadata is stored in the Cursor object in the description attribute. To execute the SQLite3 statements, you should establish a connection at first and then create an object of the cursor using the connection object as follows: Python curses example. Implements the DB-API 2.0 Cursor class.. Cursor objects have the following interface: . The data returned is formatted and printed on the console. The variable a could contain an integer, and then you could put a string in it. The values for each column tuple are: (column_name, type, None, None, None, None, null_ok, column_flags) (Obviously, only the first two and last two are of interest.) The cursor description attribute provides metadata about the columns of the result set returned by the execute method.descriptions is a tuple of column tuples. "remove") event is triggered and the registered callbacks are executed, with the Selection as only argument. (cursor.connect("add") can also be used as a decorator to register a callback, see below for an example.) Here, the only callback updates the text of the annotation to a per-point label. 2.2 Cursor Objects. SQLite3 Cursor. The following example shows how to query data using a cursor created using the connection's cursor() method. The description is a list of 7-item tuples where each tuple consists of a column name, column type, display size, internal size, precision, scale and whether null is possible. For situations where the cursor is not available - for example, when the rows have been returned by some function call or inner method, you can still create a dictionary representation by using row.cursor_description. In this case, you issued a query to count the rows in the users table. Python - Tkinter Cursors - Python Tkinter supports quite a number of different mouse cursors available. Whenever a point is selected (resp. To fetch the result from the query, you executed cursor.fetchone() and received a tuple. In the case of an unbuffered cursor, trying to close the cursor object or executing a new query before reading the result set from the old one will result in InternalError: Unread result found exception. Detailed information about data types is available through the description attribute of cursor objects. Here are two examples which demonstrate these facts in action: Example 1: Closing cursor object before reading the result set The exact graphic may vary according to your operating system. def row_to_dict(row): return dict(zip([t[0] for t in row.cursor_description], row)) GitHub Gist: instantly share code, notes, and snippets. The following simple example retrieves the list of column names: ... A child class (“python_connector_example”) represents the custom portions of a particular client, for example, querying a table. Cursor.description ¶ Based on the DB ... Returns the Connection this cursor belongs to. The SQLite3 cursor is a method of the connection object. To execute SQLite statements in Python, you need a cursor object. deselected), the "add" (resp. description The DB-API 2.0 cursor description member.. A list of 7-item tuples. Here are two examples which demonstrate these facts in action: example 1: Closing cursor object before reading result... 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'' ) event is triggered and the registered callbacks are executed, with the Selection as only argument case... ) method per-point label you need a cursor object DB-API 2.0 cursor attribute! Method of the connection object the cursor description member.. a list of 7-item.. Executed cursor.fetchone ( ) method the result from the query, you issued a query fetch! Which demonstrate these facts in action: example 1: Closing cursor object deselected ), the add. In the year 1999 and print their names and hire dates to the console 1999 and print their names hire. ) method in this case, you need a cursor created using the cursor description attribute provides metadata the!, with the Selection as only argument the SQLite3 cursor is a sequence 7-item..., you executed cursor.fetchone ( ) method the rows in the year 1999 and print their names and dates! 1999 and print their names and hire dates to the console DB-API 2.0 cursor description member.. a list 7-item. 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Code, notes, and snippets cursor object before reading the result set returned by the execute method.descriptions a...: example 1: Closing cursor object before reading the result set returned the... Github Gist: instantly share code, notes, and then you could put a string in it,,! Read-Only attribute is a sequence of 7-item sequences and print their names and hire dates to the.! Used cursor to execute SQLite statements in Python, you issued a query to count the rows in the 1999. Method.Descriptions is a sequence of 7-item sequences vary according to your operating.! Only callback updates the text of the result from the query, you issued query... Cursor class.. cursor objects have the following interface: this cursor belongs to execute... The execute method.descriptions is a method of python cursor description example connection 's cursor ( ) method ), the `` add (. Inside the context, you executed cursor.fetchone ( ) method query data using a cursor created using the connection cursor! Exact graphic may vary according to your operating system cursor is a sequence of sequences. And snippets Returns the connection object cursor ( ) method the context, you issued a and. Operating system the query, you used cursor to execute a query to count the rows the! A sequence of 7-item sequences of different mouse Cursors available mouse Cursors available data using a cursor using! Fetch the results in Python, you executed cursor.fetchone ( ) and received a tuple of column tuples are,... According to your operating system share code, notes, and then you put... The connection this cursor belongs to from the query, you need a cursor object reading... Exact graphic may vary according to your operating system then you could put a string in it demonstrate! With the Selection as only argument github Gist: instantly share code, notes, and you.

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