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Cause of a process being a deadlock victim
... another process doing updates and inserts into the same database and same tables. The first process has started, recently to end prematurely with a message
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Where do “pure virtual function call” crashes come from?
...will not happen if the base class has been declared with the __declspec(novtable) optimization (Microsoft specific). With that, it's entirely possible to call an overridden virtual method after the object has been deleted, which could mask the problem until it bites you in some other form. The _pure...
Storing Data in MySQL as JSON
... for directly in MySQL queries, but used when viewing forms (either from a table view or directly via a link). It's probably not ideal but it certainly makes it a lot quicker to implement and removes the need for an exorbitant amount of tables or table columns.
– Nick Bedford
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Load data from txt with pandas
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Thanks! How can I access an element of the table?
– albus_c
Feb 4 '14 at 7:57
if you w...
Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?
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I had a table that had a circular relationship with others and i was getting the same error. Turns out it is about the foreign key which was not nullable. If key is not nullable related object must be deleted and circular relations d...
Rails: Using build with a has_one association in rails
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Supposedly if user belonged to profile(meaning user table has foreign_key profile_id in its table) then also building profile for user will work as mentioned above i.e but for new action only user.build_profile for edit user.build_profile if user.profile.nil? and if you w...
How can I use optional parameters in a T-SQL stored procedure?
I am creating a stored procedure to do a search through a table. I have many different search fields, all of which are optional. Is there a way to create a stored procedure that will handle this? Let's say I have a table with four fields: ID, FirstName, LastName and Title. I could do something ...
Correct way of using JQuery-Mobile/Phonegap together?
...opulate the database
//
function populateDB(tx) {
tx.executeSql('DROP TABLE IF EXISTS DEMO');
tx.executeSql('CREATE TABLE IF NOT EXISTS DEMO (id unique, data)');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (1, "First row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (...
How to iterate over array of objects in Handlebars?
...t;script id="small-template" type="text/x-handlebars-template">
<table>
<thead>
<th>Username</th>
<th>email</th>
</thead>
<tbody>
{{#data}}
<tr>
...
Selecting data frame rows based on partial string match in a column
...rent approach. I don't know if that's a reference to the %like% from "data.table", but if it is, you can definitely use it as follows.
Note that the object does not have to be a data.table (but also remember that subsetting approaches for data.frames and data.tables are not identical):
library(dat...