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Insert, on duplicate update in PostgreSQL?
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PostgreSQL since version 9.5 has UPSERT syntax, with ON CONFLICT clause. with the following syntax (similar to MySQL)
INSERT INTO the_table (id, column_1, column_2)
VALUES (1, 'A', 'X'), (2, 'B', 'Y'), (3, 'C', 'Z')
ON CONFLICT (id) DO UPDATE
SET column_1 = excluded.co...
Why is my xlabel cut off in my matplotlib plot?
... am plotting a dataset using matplotlib where I have an xlabel that is quite "tall" (it's a formula rendered in TeX that contains a fraction and is therefore has the height equivalent of a couple of lines of text).
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How to center icon and text in a android button with width set to “fill parent”
I want to have an Android Button with icon+text centered inside it. I'm using the drawableLeft attribute to set the image, this works well if the button has a width of "wrap_content" but I need to stretch to max width so I use width "fill_parent" . This moves my icon straight to the left of the b...
How do I stop Chrome from yellowing my site's input boxes?
...use the attribute autocomplete="off" to disable the autocomplete functionality. If this works in Chrome (haven't tested), you could set this attribute when an error is encountered.
This can be used for both a single element
<input type="text" name="name" autocomplete="off">
...as well as ...
Nested function in C
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You cannot define a function within another function in standard C.
You can declare a function inside of a function, but it's not a nested function.
gcc has a language extension that allows nested functions. They are nonstandard, and as such are enti...
How to remove a column from an existing table?
...follow
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edited Jul 11 '12 at 11:27
Taryn♦
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Safely remove migration In Laravel
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I accidentally created a migration with a bad name (command: php artisan migrate:make). I did not run (php artisan migrate) the migration, so I decided to remove it.
My steps:
Manually delete the migration file under app/database/migrations/my_migration_file_...
Using XPATH to search text containing
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It seems that OpenQA, guys behind Selenium, have already addressed this problem. They defined some variables to explicitely match whitespaces. In my case, I need to use an XPATH similar to //td[text()="${nbsp}"].
I reprodu...
Does PostgreSQL support “accent insensitive” collations?
In Microsoft SQL Server, it's possible to specify an "accent insensitive" collation (for a database, table or column), which means that it's possible for a query like
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How can I get all constants of a type by reflection?
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Though it's an old code:
private FieldInfo[] GetConstants(System.Type type)
{
ArrayList constants = new ArrayList();
FieldInfo[] fieldInfos = type.GetFields(
// Gets all public and static fields
BindingFla...