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How to generate the “create table” sql statement for an existing table in postgreSQL
...s query might work for you (change 'tablename' with whatever your table is called):
SELECT
'CREATE TABLE ' || relname || E'\n(\n' ||
array_to_string(
array_agg(
' ' || column_name || ' ' || type || ' '|| not_null
)
, E',\n'
) || ...
How to debug Lock wait timeout exceeded on MySQL?
...nnodb status\g. Also, if your db is on an Amazon RDS instance, you can use CALL mysql.rds_kill(<thread_id>); to kill threads. It has higher permissions I think, because it allowed me to kill more processes than plain kill <thread_id>; - note these should be run within MySQL CLI
...
What is the use of the square brackets [] in sql statements?
...
You may also define a column name called select but select select from mytable would throw an error so select [select] from mytable would make it a valid query. Whatever word becomes colourful in your SQL management studio, should be surrounded by brackets if...
How to get Core Data object from specific Object ID?
... Great answer, thanks for clarification about objectWithId: - the need of calling insertObject first to prevent a raise of exception on attempt to fire a fault was indeed unobvious to me.
– Stanislav Pankevich
Jul 31 '13 at 17:52
...
Django: Set foreign key using integer?
...oyee.type is not accurate afterwards in recent Django versions, even after calling employee.save() (it holds its old value). Using it would of course defeat the purpose of the above optimisation, but I would prefer an accidental extra query to being incorrect. So be careful, only use this when you a...
Calling a JavaScript function named in a variable [duplicate]
...ss objects, so they can be properties of an object (in which case they are called methods) or even elements of arrays.
If you aren't choosing the object a function belongs to, it belongs to the global scope. In the browser, that means you're hanging it on the object named "window," which is where gl...
Implementing Fast and Efficient Core Data Import on iOS 5
... what may be your real issue regarding the hang... you show two different calls to save on the master. the first is well protected in its own performBlock, but the second is not (though you may be calling saveMasterContext in a performBlock...
However, I'd also change this code...
- (void)saveMa...
What's the difference between a POST and a PUT HTTP REQUEST?
...no file or resource there, PUT creates one. PUT is idempotent, but paradoxically PUT responses are not cacheable.
HTTP 1.1 RFC location for PUT
HTTP POST:
POST sends data to a specific URI and expects the resource at that URI to handle the request. The web server at this point can determine wha...
Rails: Adding an index after adding column
...
For references you can call
rails generate migration AddUserIdColumnToTable user:references
If in the future you need to add a general index you can launch this
rails g migration AddOrdinationNumberToTable ordination_number:integer:index
Gene...
Chrome Extension - Get DOM content
... /^https?:\/\/(?:[^./?#]+\.)?stackoverflow\.com/;
// A function to use as callback
function doStuffWithDom(domContent) {
console.log('I received the following DOM content:\n' + domContent);
}
// When the browser-action button is clicked...
chrome.browserAction.onClicked.addListener(function (t...