大约有 5,880 项符合查询结果（耗时：0.0180秒） [XML]
Efficiently updating database using SQLAlchemy ORM
...ows one by one.
Instead you should do this:
session.execute(update(stuff_table, values={stuff_table.c.foo: stuff_table.c.foo + 1}))
session.commit()
This will execute as one query as you would expect, and because at least the default session configuration expires all data in the session on commi...
Increment a value in Postgres
...res. I want to take a value (which is an integer) in a field in a postgres table and increment it by one. For example if the table 'totals' had 2 columns, 'name' and 'total', and Bill had a total of 203, what would be the SQL statement I'd use in order to move Bill's total to 204?
...
Async image loading from url inside a UITableView cell - image changes to wrong image while scrollin
I've written two ways to async load pictures inside my UITableView cell. In both cases the image will load fine but when I'll scroll the table the images will change a few times until the scroll will end and the image will go back to the right image. I have no idea why this is happening.
...
How to do associative array/hashing in JavaScript
...ash/AS3 Dictionary does. In JavaScript, var obj1 = {}; var obj2 = {}; var table= {}; table[obj1] = "A"; table[obj2] = "B"; alert(table[obj1]); //displays B, because it can't differentiate between keys obj1 and obj2; they're both converted to string and just become something like "Object". Total fa...
Should IBOutlets be strong or weak under ARC?
...oreWeak(id *object, id value);
This adds the pointer
(object) to a table using the object value as a key. This table is
referred to as the weak table. ARC uses this table to store all the
weak pointers of your application. Now, when the object value is
deallocated, ARC will iterate ove...
Purge or recreate a Ruby on Rails database
...test:prepare for testing, or else you'll get an error like: Could not find table 'things' (ActiveRecord::StatementInvalid)
– s2t2
Feb 17 '13 at 1:49
34
...
Check if a Bash array contains a value
...t does not write to stdout in an "if" statement would help: if elementIn "$table" "${skip_tables[@]}" ; then echo skipping table: ${table}; fi; Thanks for your help!
– GlenPeterson
Jul 1 '13 at 14:20
...
Setting the MySQL root user password on OS X
... server in safe mode with privilege bypass
sudo mysqld_safe --skip-grant-tables;
In a new window connect to the database, set a new password and flush the permissions & quit:
mysql -u root
For MySQL older than MySQL 5.7 use:
UPDATE mysql.user SET Password=PASSWORD('your-password') WHERE ...
Remove data.frame row names when using xtable
...and I assume it's quite easy too. I'm writing a report and I want to use xtable package for LaTeX table generation (note that memisc package does the job, but say I want to do this solely with xtable ).
...
Difficulty with ng-model, ng-repeat, and inputs
...gModel</h1>
<p>names: {{models}}</p>
<table class="table table-striped">
<thead>
<tr>
<th></th>
<th>Feature 1</td>
<th>Feature 2&l...