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MySQL LPAD() 函数

❮ MySQL 函数

示例

使用“ABC”在字符串左侧填充,总长度为 20

SELECT LPAD("SQL 教程", 20, "ABC");
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定义和用法

LPAD() 函数使用另一个字符串在字符串左侧填充,以达到特定的长度。

注意: 也请查看 RPAD() 函数。

语法

LPAD(string, length, lpad_string)

参数值

参数 描述
string 必需。原始字符串。如果原始字符串的长度大于length参数,此函数将从string中删除多余的字符。
length 必需。左侧填充后字符串的长度。
lpad_string 必需。用于左侧填充string的字符串。

技术细节

在以下版本中生效 从 MySQL 4.0 开始

更多示例

示例

使用“ABC”在“CustomerName”中的文本左侧填充,总长度为 30

SELECT LPAD(CustomerName, 30, "ABC") AS LeftPadCustomerName
FROM Customers;
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❮ MySQL 函数

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