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- dev.mysql.com
  
  12.6.2 Mathematical Functions - MySQL
  
  All mathematical functions return NULL in the event of an error. ABS( X ) ..... If you need one kind of rounding, you should use a well-defined function such as ...
  
  2025-10-01
  
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- dev.mysql.com
  
  MySQL :: MySQL 5.0 Reference Manual :: 12.17.4 Rounding Behavior
  
  This section discusses precision math rounding for the ROUND() function and for inserts into columns with exact-value types ( DECIMAL and integer).
  
  2025-10-06
  
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12.6.2 Mathematical Functions - MySQL

日期：2025-10-02

All mathematical functions return NULL in the event of an error. ABS( X ) ..... ROUND() uses the following rules depending on the type of the first argument:....

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MySQL ROUND() function - w3resource

日期：2025-10-05

Tutorial or reference of mysql round() function, covering description, syntax, example code, example of using php and explanation by w3resource.com....

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MySQL: ROUND Function - TechOnTheNet.com

日期：2025-10-06

This MySQL tutorial explains how to use the MySQL ROUND function with syntax and examples. The MySQL ROUND function returns a number rounded to a ......

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MySQL Round Function | MySQL Tutorials - Tutorial Arena

日期：2025-10-01

The MySQL round function rounds a number up or down to the nearest whole number or to the specified number of decimal places. When rounding off to a ......

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函数：MySQL中取整函数round和floor - Glawind - 博客园

日期：2025-10-01

2011年7月25日 - 123.47. ROUND ( numeric_expression , length [ , function ] ). 参数 ... 上一篇：函数：MySQL中字符串匹配函数LOCATE和POSITION使用方法...

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MySQL ROUND function using round half down instead of half up ...

日期：2025-10-03

2012年3月28日 - So I'm running MySQL version 5.1.4 and I'm trying to select distinct by ... See this. Converting the radius column to DECIMAL should solve the ......

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