TRIM([ { { LEADING | TRAILING | BOTH }
[ trim_character ]
| trim_character
}
FROM
]
trim_source
)
- leading：开头字符
- trailing：结尾字符
- both：开头和结尾字符
- trim_character：去除的字符
- trim_source：修剪源
TRIM([ { { LEADING | TRAILING | BOTH }
[ trim_character ]
| trim_character
}
FROM
]
trim_source
)