sqlite

Database; use; embedded relational database

delete

UK[d??li:t] US [di?lit]

vt.& vi.Delete

SQLite Delete function syntax

Function:SQLite's DELETE query is used to delete existing records in the table. You can use a DELETE query with a WHERE clause to delete selected rows, otherwise all records will be deleted.

Syntax: DELETE FROM table_name WHERE [condition];

SQLite Delete function example

COMPANY 表有以下記錄：

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
下面是一個實例，它會刪除 ID 為 7 的客戶：

sqlite> DELETE FROM COMPANY WHERE ID = 7;
現(xiàn)在，COMPANY 表有以下記錄：

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
如果您想要從 COMPANY 表中刪除所有記錄，則不需要使用 WHERE 子句，DELETE 查詢?nèi)缦拢?

sqlite> DELETE FROM COMPANY;
現(xiàn)在，COMPANY 表中沒有任何的記錄，因為所有的記錄已經(jīng)通過 DELETE 語句刪除。