大约有 9,000 项符合查询结果（耗时：0.0335秒） [XML]
SQL - many-to-many table primary key
...pe and dictates your DB design for you...
Edit: I answered the same here: SQL: Do you need an auto-incremental primary key for Many-Many tables?
share
|
improve this answer
|
...
Hibernate vs JPA vs JDO - pros and cons of each? [closed]
...ostic and so is not limited to the RDBMS world. With the ground swell of NoSQL at the moment a person would be wise to consider using a persistence standard that avoids locking their apps to the traditional *SQL world. JDO applications can easily be deployed non RDBMS datastores. Full list of suppo...
CentOS+Nginx+PHP+MySQL详细配置(图解) - PHP - 清泛IT论坛，有思想、有深度
...个只要我们安装是启用FastCGI即可。此次我们安装PHP不仅使用了FastCGI，而且还使用了PHP-FPM这么一个东东，PHP-FPM说白了是一个管理FastCGI的一个管理器，它作为PHP的插件纯在，在安装PHP要想使用PHP-FPM时就需要把PHP-FPM以补丁的形式...
How can I make SQL case sensitive string comparison on MySQL?
...
http://dev.mysql.com/doc/refman/5.0/en/case-sensitivity.html
The default character set and collation are latin1 and latin1_swedish_ci, so nonbinary string comparisons are case insensitive by default. This means that if you search with...
Paste a multi-line Java String in Eclipse [duplicate]
...
If your building that SQL in a tool like TOAD or other SQL oriented IDE they often have copy markup to the clipboard. For example, TOAD has a CTRL+M which takes the SQL in your editor and does exactly what you have in your code above. It also c...
svn cleanup: sqlite: database disk image is malformed
... following blog post helped me resolve it:
http://www.polak.ro/svn-e200030-sqlite-database-disk-image-is-malformed.html
You do an integrity check on the sqlite database that keeps track of the repository (/.svn/wc.db):
sqlite3 .svn/wc.db "pragma integrity_check"
That should report some errors.
...
Checking oracle sid and database name
...ght be worth noting that not all of the methods give you the same output:
SQL> select sys_context('userenv','db_name') from dual;
SYS_CONTEXT('USERENV','DB_NAME')
--------------------------------------------------------------------------------
orcl
SQL> select ora_database_name from dual;
...
How to select rows that have current day's timestamp?
...
See the difference: SQL-Fiddle Notice the FILTERED = 25 in the 2nd query.
– ypercubeᵀᴹ
Feb 8 '13 at 12:28
...
mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc… expects parameter 1 to
I am trying to select data from a MySQL table, but I get one of the following error messages:
31 Answers
...
Unknown Column In Where Clause
...
SQL is evaluated backwards, from right to left. So the where clause is parsed and evaluate prior to the select clause. Because of this the aliasing of u_name to user_name has not yet occurred.
...