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LEFT JOIN vs. LEFT OUTER JOIN in SQL Server
...default is INNER if you just specify JOIN. In other words, this is legal:
SELECT *
FROM A JOIN B ON A.X = B.Y
Here's a list of equivalent syntaxes:
A LEFT JOIN B A LEFT OUTER JOIN B
A RIGHT JOIN B A RIGHT OUTER JOIN B
A FULL JOIN B A FULL OUTER JOIN B
A INNER JOIN...
How do RVM and rbenv actually work?
... practical difference between RVM and rbenv is when the version of Ruby is selected.
rbenv:
rbenv adds a shim to the start of your path, a command with the same name as Ruby. When you type ruby at a command line the shim is run instead (because it is also called "ruby" and comes first in the path)...
PostgreSQL - how to quickly drop a user with existing privileges
...llimoose: I really don't want the original tables to be dropped if I GRANT SELECT ON FOO TO TESTUSER and then DROP OWNED BY TESTUSER. I think you're saying that DROP OWNED BY is only dropping the grants but will not drop the object to which the grant was made. Correct?
– Andr...
Ora-00257 错误处理一列 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
.../oracle/.bash_profile
进入ORLACE
sqlplus /as sysdba
SQL> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES BLOCKSIZE MEMBERS ARC
---------- ---------- ---------- ---------- ---------- ---------- ---
STATUS FIRST_CHANGE# FIRST_TIME NEXT_CHANGE#...
How can I get “Copy to Output Directory” to work with Unit Tests?
... In VS2010 this is: Test/Edit Test Settings/local, then in the list, select "Deployment", check the "Enable..." box and add the file(s).
– Marcel
Jun 16 '10 at 12:54
18
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Getting “Lock wait timeout exceeded; try restarting transaction” even though I'm not using a transac
...heck your database transaction isolation level in the mysql cli:
mysql> SELECT @@GLOBAL.tx_isolation, @@tx_isolation, @@session.tx_isolation;
+-----------------------+-----------------+------------------------+
| @@GLOBAL.tx_isolation | @@tx_isolation | @@session.tx_isolation |
+----------------...
ORA-30926: unable to get a stable set of rows in the source tables
... could do something like this:
MERGE INTO table_1 a
USING
(SELECT distinct ta.ROWID row_id
FROM table_1 a ,table_2 b ,table_3 c
WHERE a.mbr = c.mbr
AND b.head = c.head
AND b.type_of_action <> '6') src
ON ( a....
mysql query order by multiple items
...
SELECT some_cols
FROM prefix_users
WHERE (some conditions)
ORDER BY pic_set DESC, last_activity;
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What are the best practices for using Assembly Attributes?
...]
You can add the GlobalAssemblyInfo.cs using the following procedure:
Select Add/Existing Item... in the context menu of the project
Select GlobalAssemblyInfo.cs
Expand the Add-Button by clicking on that little down-arrow on the right hand
Select "Add As Link" in the buttons drop down list
...
Chaining multiple filter() in Django, is this a bug?
...estricted the set of blogs further to those that are also (B). The entries select by the second filter may or may not be the same as the entries in the first filter.`
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