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Script to kill all connections to a database (More than RESTRICTED_USER ROLLBACK)
...
Updated
For MS SQL Server 2012 and above
USE [master];
DECLARE @kill varchar(8000) = '';
SELECT @kill = @kill + 'kill ' + CONVERT(varchar(5), session_id) + ';'
FROM sys.dm_exec_sessions
WHERE database_id = db_id('MyDB')
EXEC(@kill);...
How do I turn off Oracle password expiration?
...mand:
ALTER USER xyz_user IDENTIFIED BY new_password;
Below is a little SQL*Plus script that a privileged user (e.g. user 'SYS') can use to reset a user's password to the current existing hashed value stored in the database.
EDIT: Older versions of Oracle store the password or password-hash in t...
What are the best PHP input sanitizing functions?
...way to make sure data is properly escaped and encoded. If you're building SQL, then the accepted way to pass data in queries is through prepared statements with placeholders.
One of the better ways to work with most SQL databases in PHP is the PDO extension. It follows the common pattern of prepar...
What's the difference between a catalog and a schema in a relational database?
...n Introduction to Database Systems, 7th ed., C.J. Date, p 69-70.
From the SQL standard point of view :
Catalogs are named collections of schemas in an SQL-environment. An
SQL-environment contains zero or more catalogs. A catalog contains
one or more schemas, but always contains a schema nam...
Why would you use Oracle database? [closed]
...hy you choose Oracle database versus the latest flavors of:
1) Microsoft SQL Server
2) MySQL
3) PostgreSQL
6 Answer...
Remove all spaces from a string in SQL Server
What is the best way to remove all spaces from a string in SQL Server 2008?
23 Answers
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How do I make a composite key with SQL Server Management Studio?
How do I make a composite key with SQL Server Management Studio?
7 Answers
7
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What is the meaning of the prefix N in T-SQL statements and when should I use it?
I have seen prefix N in some insert T-SQL queries. Many people have used N before inserting the value in a table.
4 Answe...
How to insert a value that contains an apostrophe (single quote)?
What is the correct SQL syntax to insert a value with an apostrophe in it?
10 Answers
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马无夜草不肥——聊聊程序员接私活的那些坑 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...就不能言明了。
或者伴随着用户的增长，遇到各种优化性能问题以及后台扩容，付出的成本说少不少，苦只有自己知道。
或者新需求出现，或者完善某个功能。有些甲方软磨硬泡，以变动不大，然后你就配合一块修改了。有...