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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?
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Paste a multi-line Java String in Eclipse [duplicate]
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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...
How can I make SQL case sensitive string comparison on MySQL?
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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...
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.
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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...
How to select rows that have current day's timestamp?
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See the difference: SQL-Fiddle Notice the FILTERED = 25 in the 2nd query.
– ypercubeᵀᴹ
Feb 8 '13 at 12:28
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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')
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orcl
SQL> select ora_database_name from dual;
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Unknown Column In Where Clause
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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.
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DaffyMenu 扩展：弹出菜单扩展，为组件添加弹出式菜单功能 · App Inventor 2 中文网
...绑定多个菜单
事件处理：确保正确处理菜单点击事件
性能考虑：菜单项数量不宜过多
图标支持：支持菜单项图标，需要提供图标路径
动画效果：可配置菜单弹出和隐藏的动画时长
颜色配置：支持自定义菜单的文本和背...
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:
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