大约有 7,000 项符合查询结果(耗时:0.0291秒) [XML]

https://stackoverflow.com/ques... 

MySQL: ignore errors when importing?

... Use the --force (-f) flag on your mysql import. Rather than stopping on the offending statement, MySQL will continue and just log the errors to the console. For example: mysql -u userName -p -f -D dbName < script.sql ...
https://stackoverflow.com/ques... 

TINYTEXT, TEXT, MEDIUMTEXT, and LONGTEXT maximum storage sizes

Per the MySQL docs , there are four TEXT types: 4 Answers 4 ...
https://stackoverflow.com/ques... 

Mysql: Select rows from a table that are not in another

... this only works as expected when none of the columns have NULL values. In MySQL NULL != NULL so every row that has a NULL value will be returned even if there is a duplicate row in the second table. – Kyle Kochis Apr 7 '15 at 2:49 ...
https://stackoverflow.com/ques... 

Rails 3: Get Random Record

... Thing.first(:order => "RANDOM()") # For MySQL :order => "RAND()", - thanx, @DanSingerman # Rails 3 Thing.order("RANDOM()").first or Thing.first(:offset => rand(Thing.count)) # Rails 3 Thing.offset(rand(Thing.count)).first Actually, in Rails 3 all example...
https://stackoverflow.com/ques... 

Remove Primary Key in MySQL

... following table schema which maps user_customers to permissions on a live MySQL database: 12 Answers ...
https://stackoverflow.com/ques... 

Generate GUID in MySQL for existing Data?

I've just imported a bunch of data to a MySQL table and I have a column "GUID" that I want to basically fill down all existing rows with new and unique random GUID's. ...
https://stackoverflow.com/ques... 

how to convert a string to date in mysql?

... As was told at MySQL Using a string column with date text as a date field, you can do SELECT STR_TO_DATE(yourdatefield, '%m/%d/%Y') FROM yourtable You can also handle these date strings in WHERE clauses. For example SELECT whatever...
https://stackoverflow.com/ques... 

How to delete duplicates on a MySQL table?

I need to DELETE duplicated rows for specified sid on a MySQL table. 25 Answers 25...
https://bbs.tsingfun.com/thread-1002-1-1.html 

App Inventor 2开发计步器与定位器 - App Inventor 2 中文网 - 清泛IT论坛,有思想、有深度

...编写“健身宝”手机应用程序   3.问题:   (1)如何获取走路步数、距离?   (2)如何计算走路时间?   (3)如何获得当前位置?   (4)如何存储信息?   4.规划:   (1)利用pedometer(计步器)组件...
https://stackoverflow.com/ques... 

MySQL Cannot Add Foreign Key Constraint

... lol same. MySQL could use more precise error handling on this kind of stuff. – dave Apr 17 at 23:38 add a comm...