SQLITE：将字符串附加到主键

Question

我正在使用它来尝试将 NAME 中的值命名为 ValueOLD

UPDATE PLAYERS SET NAME = NAME + 'OLD';

但是我收到了

Execution finished with errors.
Result: UNIQUE constraint failed: PLAYERS.NAME
At line 1:
UPDATE PLAYERS SET NAME = NAME + 'OLD';

我看到一些关于插入的问题，看起来它们可以工作，但 UPDATE 或 SET 没有任何成功

Answer 1

在SQLite中，||可用于拼接。

所以尝试：

UPDATE
    PLAYERS
SET
    NAME = NAME || 'OLD';

The || operator is "concatenate" - it joins together the two strings of its operands.

SQLITE: Appending string to primary key