无涯教程-MySQL Numeric Functions函数 MySQL数值函数主要用于数值运算和/或数学计算。下表详细介绍了MySQL实现中可用的数值函数。 ABS(X) ABS()函数返回X的绝对值。请考虑以下Example- mysql> SELECT ABS(2); +---+ | ABS(2) | +---+ | 2 | +---...
Essential MySQL Functions (时长33分钟) 内置的用来处理数值、文本、日期等的函数 1. 数值函数 Numeric Functions (2:54) 小结 主要介绍最常用的几个数值函数:ROUND、TRUNCATE、CEILING、FLOOR、ABS、RAND 查看MySQL全部数值函数可谷歌'mysql numeric function',第一个就是官方文档。 SELECT ROUND(5.7365, 2) --...
mysql FORMAT函数超过1000不加小数点 mysql number函数 MYSQL Numeric Functions ①ROUND(the number,指定的精度)—— 用于对‘the number’进行四舍五入,不指定精度时默认返回INT。 SELECT ROUND(5.73,1) -- 5.7 1. 2. ②CEILING(the number)—— 用于返回大于等于’the number’的最小整数 SELECT CEILING(9.1...
MySQL Numeric Functions FunctionDescription ABSReturns the absolute value of a number ACOSReturns the arc cosine of a number ASINReturns the arc sine of a number ATANReturns the arc tangent of one or two numbers ATAN2Returns the arc tangent of two numbers ...
更多参考:https://dev.mysql.com/doc/refman/5.7/en/numeric-functions.html 加密相关 先来说AES加密: -- AES_ENCRYPT:加密函数,第一个参数是需要加密的字符串,第二个参数是keySELECTAES_ENCRYPT('ABCD','KEY');-- 返回结果为乱码,表的字符集为拉丁或者utf8mb4可解决SELECTCHAR_LENGTH(AES_ENCRYPT('ABCDE'...
Functions 5 String Function5.1 String Comparison Functions 5.2 Regular Expressions 5.3 Character Set and Collation of Function Results 6 Numeric Functions and Operators 6.1 Arithmetic Operators 6.2 Mathematical Functions 7 Date and Time Functions
Table 14.8 Numeric Functions and Operators NameDescription %,MODModulo operator *Multiplication operator +Addition operator -Minus operator -Change the sign of the argument /Division operator ABS()Return the absolute value ACOS()Return the arc cosine ...
Table 12.8 Numeric Functions and Operators NameDescription %, MOD Modulo operator * Multiplication operator + Addition operator - Minus operator - Change the sign of the argument / Division operator ABS() Return the absolute value ACOS() Return the arc cosine ASIN() Return the arc ...
Add isNumeric function Bug #63834Add isNumeric function Submitted:22 Dec 2011 4:47Modified:23 Dec 2011 19:58 Reporter:Eric KentEmail Updates: Status:VerifiedImpact on me: None Category:MySQL Server: ErrorsSeverity:S4 (Feature request) Version:5.5.19OS:Windows (Windows 7)...
·Capabilities and functions. 15、MySQL驱动程序是什么? 以下是MySQL中可用的驱动程序: ·PHP驱动程序 ·JDBC驱动程序 ·ODBC驱动程序 ·CWRAPPER ·PYTHON驱动程序 ·PERL驱动程序 ·RUBY驱动程序 ·CAP11PHP驱动程序 ·Ado.net5.mxj 16、TIMESTAMP在UPDATE CURRENT_TIMESTAMP数据类型上做什么?