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how to customize `show processlist` in mysql?
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Newer versions of SQL support the process list in information_schema:
SELECT * FROM INFORMATION_SCHEMA.PROCESSLIST
You can ORDER BY in any way you like.
The INFORMATION_SCHEMA.PROCESSLIST table was added in MySQL 5.1.7. You can find out...
How to calculate age (in years) based on Date of Birth and getDate()
... The simplest/shortest code for this exact same calculation method in SQL Server 2012+ is code: SELECT [Age] = (0+ FORMAT(@as_of,'yyyyMMdd') - FORMAT(@bday,'yyyyMMdd') ) /10000 --The 0+ part tells SQL to calc the char(8) as numbers
– ukgav
Mar 4 '19 at ...
Worst security hole you've seen? [closed]
...ng how many pages on the Internet, government sites in particular, pass an SQL query through the query string. It's the worst form of SQL injection, and it takes no effort at all to find vulnerable sites.
With minor tweaks, I've been able to find unprotected installations of phpMyAdmin, unprotected...
Git command to show which specific files are ignored by .gitignore
... first show me 4 files, and the second only two. (.gitignore~, index.php~, sql/create_users.sql~, www/index.php~) (Would remove .gitignore~, Would remove index.php~). Am I missins something here?
– Cesar
Jun 15 '11 at 21:00
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List columns with indexes in PostgreSQL
I would like to get the columns that an index is on in PostgreSQL.
23 Answers
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How can I make a JPA OneToOne relation lazy
...relations were lazy so that wasn't the problem. When inspecting the actual SQL being executed, I noticed that there were over 80 joins in the query.
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How does comparison operator works with null int?
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Comparing C# with SQL
C#: a=null and b=null => a==b => true
SQL: a=null and b=null => a==b => false
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How to add multiple objects to ManyToMany relationship at once in Django ?
...sdolan is in fact (currently) incorrect. I.e. when I look at the generated SQL I see only a single insert statement: INSERT INTO app_one_twos (one_id, two_id) VALUES (1, 1), (1, 2), (1, 3), (1, 4); This is in Django 1.4.
– Klaas van Schelven
Mar 26 '13 at 16...
Create an index on a huge MySQL production table without table locking
I need to create an index on a ~5M rows MySQL table. It is a production table, and I fear a complete block of everything if I run a CREATE INDEX statement...
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Difference between Document-based and Key/Value-based databases?
I know there are three different, popular types of non-sql databases.
2 Answers
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