大约有 40,000 项符合查询结果(耗时:0.0335秒) [XML]

https://stackoverflow.com/ques... 

Is it a good idea to index datetime field in mysql?

...etime clause to select data. Is it a good idea to index datetime fields in mysql database? 2 Answers ...
https://stackoverflow.com/ques... 

Difference between VARCHAR and TEXT in MySQL [duplicate]

When we create a table in MySQL with a VARCHAR column, we have to set the length for it. But for TEXT type we don't have to provide the length. ...
https://stackoverflow.com/ques... 

Best way to make Django's login_required the default

... Simply check each view function. import os import re def view_modules( root ): for path, dirs, files in os.walk( root ): for d in dirs[:]: if d.startswith("."): dirs.remove(d) for f in files: name, ext = os.path.splitext(f) ...
https://stackoverflow.com/ques... 

Cannot use identity column key generation with ( TABLE_PER_CLASS )

... Is this issue is with MySql only or its regular as I watch one of a video for Table per class approach and it was working fine in that postgres was used – Prashant Jan 22 '14 at 5:47 ...
https://stackoverflow.com/ques... 

Using MySQL with Entity Framework [closed]

Can't find anything relevant about Entity Framework/MySQL on Google so I'm hoping someone knows about it. 10 Answers ...
https://stackoverflow.com/ques... 

MySQL Workbench: How to keep the connection alive

Error Code: 2013. Lost connection to MySQL server during query 9 Answers 9 ...
https://stackoverflow.com/ques... 

What is the MySQL JDBC driver connection string?

I am new to JDBC and I am trying to make a connection to a MySQL database. I am using Connector/J driver, but I cant find the JDBC connection string for my Class.forName() method. ...
https://stackoverflow.com/ques... 

MySQL indexes - what are the best practices?

I've been using indexes on my MySQL databases for a while now but never properly learnt about them. Generally I put an index on any fields that I will be searching or selecting using a WHERE clause but sometimes it doesn't seem so black and white. ...
https://stackoverflow.com/ques... 

How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?

...SERT a row when it does not exist, or to UPDATE if it exists, using one MySQL query? 2 Answers ...
https://stackoverflow.com/ques... 

How to select the nth row in a SQL database table?

... http://troels.arvin.dk/db/rdbms/#select-limit. Basically, PostgreSQL and MySQL supports the non-standard: SELECT... LIMIT y OFFSET x Oracle, DB2 and MSSQL supports the standard windowing functions: SELECT * FROM ( SELECT ROW_NUMBER() OVER (ORDER BY key ASC) AS rownumber, columns F...