This means, inside single quoted strings, the single quote character has to be escaped, and inside double quoted strings, the double quote character has to be escaped.

这意味着，在单引号字符串，单引号字符必须逃，在双引号字符串，双引号字符必须逃跑。

youdao

The character sequence \ represents a backslash escaped single quote 'in MySQL, but in DB2, a single quote must be escaped by adding another single quote "(double single quotes)."

在MySQL中，字符序列\表示一个反斜杠转移单引号'，但在DB 2中，单引号必须要再加一个单引号来实现转义' '(即两个单引号)。

youdao

A backslash can escape a double quote, or any single whitespace character.

后斜杠可以对双引号或任一空白字符进行转义。

youdao