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SQLite DELETE
Queries are used to delete existing records from a table. You can use the WHERE clause with the DELETE query to delete selected rows, otherwise all records will be deleted.
The following is the basic syntax of DELETE query with WHERE clause.
DELETE FROM table_name WHERE [condition];
You can combine n conditions using AND or OR operators.
Please see the COMPANY table with the following records.
ID NAME AGE ADDRESS SALARY ---------- ---------- ---------- ---------- ---------- 1 Paul 32 California 20000.0 2 Allen 25 Texas 15000.0 3 Teddy 23 Norway 20000.0 4 Mark 25 Rich-Mond 65000.0 5 David 27 Texas 85000.0 6 Kim 22 South-Hall 45000.0 7 James 24 Houston 10000.0
Below is an example that will delete the record with ID7customer.
sqlite> DELETE FROM COMPANY WHERE ID = 7;
Now the COMPANY table will have the following records.
ID NAME AGE ADDRESS SALARY ---------- ---------- ---------- ---------- ---------- 1 Paul 32 California 20000.0 2 Allen 25 Texas 15000.0 3 Teddy 23 Norway 20000.0 4 Mark 25 Rich-Mond 65000.0 5 David 27 Texas 85000.0 6 Kim 22 South-Hall 45000.0
If you want to delete all records from the COMPANY table, there is no need to use the WHERE clause with the DELETE query as shown below-
sqlite> DELETE FROM COMPANY;
Currently, the COMPANY table has no records because all records have been deleted by the DELETE statement.