The APSW provides the thinnest layer over the SQLite database library. If your application needs to support only the SQLite database, you should use the APSW module, which is known as Another Python SQLite Wrapper. PySQLite is a part of the Python standard library since Python version 2.5 APSW The PySQLite provides a standardized Python DBI API 2.0 compliant interface to the SQLite database. If your application needs to support not only the SQLite database but also other databases such as MySQL, PostgreSQL, and Oracle, the PySQLite is a good choice. Each interface targets a set of different needs. Python provides two popular interfaces for working with the SQLite database library: PySQLite and APSW. In this tutorial, you have learned how to use SQLite DELETE statement to remove rows in a table.This section shows you step by step how to work with the SQLite database using Python programming language. To remove all rows in the artists_backup table, you just need to omit the WHERE clause as the following statement: DELETE FROM artists_backup Code language: SQL (Structured Query Language) ( sql ) There are 9 rows whose values in the name column contain the word Santana therefore, these 9 rows were deleted. WHERE name LIKE '%Santana%' Code language: SQL (Structured Query Language) ( sql ) Suppose you want to delete artists whose names contain the word Santana: DELETE FROM artists_backup WHERE artistid = 1 Code language: SQL (Structured Query Language) ( sql )īecause we use artistid to identify the artist, the statement removed exactly 1 row. To remove an artist with id 1, you use the following statement: DELETE FROM artists_backup We have 280 rows in the artists_backup table. The following statement returns all rows from the artists_backup table: SELECTĪrtists_backup Code language: SQL (Structured Query Language) ( sql ) SELECT artistid, name FROM artists Code language: SQL (Structured Query Language) ( sql ) populate data from the artists table INSERT INTO artists_backup If you did not follow that tutorial, you can create the artists_backup table and insert data into it using the following script: - create artists backup table CREATE TABLE artists_backup(Īrtistid INTEGER PRIMARY KEY AUTOINCREMENT, We will use the artists_backup table created in the how to insert rows into table tutorial. This feature is known as truncate optimization. SQLite will delete all rows in one shot instead of visiting and deleting each individual row. Notice that when you use the DELETE statement without a WHERE clause on a table that has no triggers. The ORDER BY clause sorts the rows filtered by the preceding search_condition in the WHERE clause and the LIMIT clause specifies the number of rows that to be deleted. LIMIT row_count OFFSET offset Code language: SQL (Structured Query Language) ( sql ) If you compile SQLite with the SQLITE_ENABLE_UPDATE_DELETE_LIMIT compile-time option, you can use the ORDER BY and LIMIT clause in the DELETE statement like the following form: DELETE FROM table WHERE search_condition SQLite also provides an extension to the DELETE statement by adding ORDER BY and LIMIT clauses. If you omit the WHERE clause, the DELETE statement will delete all rows in the table. ![]() The WHERE clause is an optional part of the DELETE statement.
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