SQLite Update function
Translation results：
sqlite
Database; use; embedded relational database
update
英[ˌʌpˈdeɪt] US[ʌpˈdet ]
vt. Update, modernize; correct, amend
n. Modernize; updated information; updated behavior or instances
SQLite Update functionsyntax
Function: SQLite's UPDATE query is used to modify existing records in the table. You can use an UPDATE query with a WHERE clause to update selected rows, otherwise all rows will be updated.
Syntax: UPDATE table_name SET column1 = value1, column2 = value2...., columnN = valueN
WHERE [condition];
SQLite Update functionexample
COMPANY 表有以下记录： 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 下面是一个实例，它会更新 ID 为 6 的客户地址： sqlite> UPDATE COMPANY SET ADDRESS = 'Texas' WHERE ID = 6; 现在，COMPANY 表有以下记录： 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 Texas 45000.0 7 James 24 Houston 10000.0 如果您想修改 COMPANY 表中 ADDRESS 和 SALARY 列的所有值，则不需要使用 WHERE 子句，UPDATE 查询如下： sqlite> UPDATE COMPANY SET ADDRESS = 'Texas', SALARY = 20000.00; 现在，COMPANY 表有以下记录： ID NAME AGE ADDRESS SALARY ---------- ---------- ---------- ---------- ---------- 1 Paul 32 Texas 20000.0 2 Allen 25 Texas 20000.0 3 Teddy 23 Texas 20000.0 4 Mark 25 Texas 20000.0 5 David 27 Texas 20000.0 6 Kim 22 Texas 20000.0 7 James 24 Texas 20000.0