可以使用MySQL的内置函数STR_TO_DATE()将STRING类型转换为DATE类型。该函数的语法如下: 代码语言:txt 复制 STR_TO_DATE(str, format) 其中,str是要转换的字符串,format是字符串的格式。 示例代码 假设有一个表users,其中有一个字段register_date是VARCHAR类型,存储用户的注册日期,格式为YYYY-MM-DD。我们可以使用...
1. 创建一个存储过程 CREATEPROCEDUREconvertStringToDate(INstrVARCHAR(255),OUTdateDATE)BEGINSETdate=STR_TO_DATE(str,'%Y-%m-%d');END 1. 2. 3. 4. 2. 调用存储过程进行转换 SET@inputStr='2022-05-15';CALLconvertStringToDate(@inputStr,@outputDate);SELECT@outputDate; 1. 2. 3. 3. 日期格式...
与User交互使用MySQL进行操作Developer- experience:int+teachWhite(user:User) : voidUser+ name:StringMySQL- date_string:String- date_format:String- date:Date+setDateString(date:String) : void+setDateFormat(format:String) : void+convertToDate() : void+getDate() : Date 总结 通过本文的介绍,你已经...
Date: February 09, 2006 11:30AM STR_TO_DATE(str,format) This is the inverse of the DATE_FORMAT() function. It takes a string str and a format string format. STR_TO_DATE() returns a DATETIME value if the format string contains both date and time parts, or a DATE or TIME value if...
SELECT CONVERT_TZ(STR_TO_DATE('2023-10-05 12:00:00', '%Y-%m-%d %H:%i:%s'), '+00:00', '+08:00'); 参考链接 MySQL STR_TO_DATE() 函数 MySQL 日期和时间类型 通过以上信息,你应该能够理解MySQL中将字符串转换为时间的基本概念、优势、类型、应用场景以及常见问题的解决方法。
string:源字符串 start_position:子串第一个字符在源字符串中的起始位置 length:子串长度 测试结果:substr('2011-11-17',0,7) 2011-11 sql replace()转换2018-03-12 10:25:20为20180312102734datetime格式 --多种日期格式类比 select CONVERT(varchar, getdate(), 120 ) ...
friendly. This is not done for the arguments toIN(). To be safe, always use complete datetime, date, or time strings when doing comparisons. For example, to achieve best results when usingBETWEENwith date or time values, useCAST()to explicitly convert the values to the desired data type....
FROM_DAYS() Convert a day number to a date FROM_UNIXTIME() Format Unix timestamp as a date GET_FORMAT() Return a date format string HOUR() Extract the hour LAST_DAY Return the last day of the month for the argument LOCALTIME(), LOCALTIME Synonym for NOW() LOCALTIMESTAMP,...
DATETIME if the first argument is a DATETIME (or TIMESTAMP) value, or if the first argument is a DATE and the unit value uses HOURS, MINUTES, or SECONDS. String otherwise. To ensure that the result is DATETIME, you can use CAST() to convert the first argument to DATETIME. mysql>...
What's the best way to convert a string to a date in MySQL 4.0? Possible input: 1. mm/dd/yyyy, 2. yyyy-mm-dd, or 3. an empty string output: yyyy-mm-dd 00:00:00 I am aware that MySQL 4.1 has the STR_TO_DATE() function but we are still in 4.0.x. Thank you...