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MySQL - UPDATE query based on SELECT Query
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You can actually do this one of two ways:
MySQL update join syntax:
UPDATE tableA a
INNER JOIN tableB b ON a.name_a = b.name_b
SET validation_check = if(start_dts > end_dts, 'VALID', '')
-- where clause can go here
ANSI SQL syntax:
UPDATE tableA SET validation...
SQL injection that gets around mysql_real_escape_string()
Is there an SQL injection possibility even when using mysql_real_escape_string() function?
4 Answers
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Can't install Ruby under Lion with RVM – GCC issues
...e two lines:
http://stackoverflow.com/questions/8000145/ruby-rvm-llvm-and-mysql
bash-3.2$ rvm get head
bash-3.2$ CC=/usr/bin/gcc-4.2 rvm install 1.9.3 --enable-shared
Before that I had tried every stackoverflow article on Ruby and Lion so doing these may have done some setup that helped the abov...
Is there a MySQL option/feature to track history of changes to records?
I've been asked if I can keep track of the changes to the records in a MySQL database. So when a field has been changed, the old vs new is available and the date this took place. Is there a feature or common technique to do this?
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Remove ActiveRecord in Rails 3
... line that loads the module for your database. This could be the line gem "mysql" for example.
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PDO closing connection
Just a rather simple question with regards to PDO compared to MySQLi.
5 Answers
5
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Duplicating a MySQL table, indices, and data
How do I copy or clone or duplicate the data, structure,
and indices of a MySQL table to a new one?
10 Answers
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What is the most efficient way to store a list in the Django models?
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Sadly, no solution for mysql
– Joel G Mathew
Aug 28 '18 at 10:35
I...
How do you set a default value for a MySQL Datetime column?
How do you set a default value for a MySQL Datetime column?
25 Answers
25
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How do you create a Distinct query in HQL
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I only ever used hibernate with MySQL - not sure how to deal with the mssql issue.
– Feet
May 13 '12 at 23:51
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