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ERROR 1396 (HY000): Operation CREATE USER failed for 'jack'@'localhost'
...'s quite clear why, if one reads the docs. It's because altering the MySQL tables directly does not reload the info into memory; yet the plethora of solutions to this bug claim that FLUSH PRIVILEGES is the answer.
This also may not even be a bug. It is a documentation conspiracy - docs vary in one ...
Disable sorting for a particular column in jQuery DataTables
I am using the jQuery DataTables plugin to sort the table fields. My question is: how do I disable sorting for a particular column? I have tried with the following code, but it did not work:
...
insert multiple rows via a php array into mysql
I'm passing a large dataset into a MySQL table via PHP using insert commands and I'm wondering if its possible to insert approximately 1000 rows at a time via a query other than appending each value on the end of a mile long string and then executing it. I am using the CodeIgniter framework so its f...
How to find Unused Amazon EC2 Security groups
...EC2 security groups.
I store the group-id, group-name and description in a tabled called “groups” in a MySQL database called aws_security_groups on the localhost. The total number of groups found is reported to the user.
Get a list of all security groups associated with each of the following se...
Import CSV to mysql table
What is the best/fastest way to upload a csv file into a mysql table? I would like for the first row of data be used as the column names.
...
What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
...h gives 31-lzcnt for non-zero inputs.)
There's unfortunately no way to portably take advantage of the various CLZ instructions on non-x86 platforms that do define the result for input=0 as 32 or 64 (according to the operand width). x86's lzcnt does that, too, while bsr produces a bit-index that th...
Which MySQL datatype to use for an IP address? [duplicate]
... INT UNSIGNED
And INET_ATON and INET_NTOA to convert them:
INSERT INTO `table` (`ipv4`) VALUES (INET_ATON("127.0.0.1"));
SELECT INET_NTOA(`ipv4`) FROM `table`;
For IPv6 addresses you could use a BINARY instead:
`ipv6` BINARY(16)
And use PHP’s inet_pton and inet_ntop for conversion:
'INSER...
How can I handle time zones in my webapp?
...e situation you outlined is uncommon. By implementing a dropdown with a suitable default, you should be able to make things easy enough for those who do move around (because they typically have a better understanding of timezones than a non-traveller would).
In fact, even better would be to save th...
How to save all the variables in the current python session?
... -globals() = Return a dictionary representing the current global symbol table.
This is always the dictionary of the current module (inside a function or method,
this is the module where it is defined, not the module from which it is called).
-locals() = Update ...
Email validation using jQuery
...tion="" method="post" id="contactform">
<table class="contact-table">
<tr>
<td><label for="name">Name :</label></td>
<td class="name">...