参考http://dev.mysql.com/doc/refman/5.5/en/string-literals.html#character-escape-sequences
| Escape Sequence | Character Represented by Sequence |
|---|
\0 |
An ASCII NUL (0x00) character. |
\' |
A single quote (“'”) character. |
\" |
A double quote (“"”) character. |
\b |
A backspace character. |
\n |
A newline (linefeed) character. |
\r |
A carriage return character. |
\t |
A tab character. |
\Z |
ASCII 26 (Control+Z). See note following the table. |
\\ |
A backslash (“\”) character. |
\% |
A “%” character. See note following the table. |
\_ |
A “_” character. See note following the table. |
