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How to write DataFrame to postgres table?
There is DataFrame.to_sql method, but it works only for mysql, sqlite and oracle databases. I cant pass to this method postgres connection or sqlalchemy engine.
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Android: Want to set custom fonts for whole application not runtime
...t = Typeface.createFromAsset(getAssets(), "fonts/BPreplay.otf");
ViewGroup root = (ViewGroup)findViewById(R.id.myrootlayout);
setFont(root, mFont);
/*
* Sets the font on all TextViews in the ViewGroup. Searches
* recursively for all inner ViewGroups as well. Just add a
* check for any other view...
How can I alter a primary key constraint using SQL syntax?
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ALTER TABLE db.table DROP PRIMARY KEY is for MySQL. (Not MSSQL.)
– Roy Latham
Sep 25 at 16:43
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What does SQL clause “GROUP BY 1” mean?
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Error to use a section registered as allowDefinition='MachineToApplication' beyond application level
...ramework\version\CONFIG folder. You can also have a Web.config file in the root folder of your website. This Web.config file can override settings defined in the “global” Web.config file, or add new ones. Additionally, you may have Web.config files in the subfolders of your website, which define...
Should developers have administrator permissions on their PC
...ges to do.
Bearing in mind that development staff do not necessarily have root access to production systems, admin rights on a local PC does not significantly compromise security of production systems. There is almost no legitimate operational reason for restricting admin access to local PCs for s...
What is the “realm” in basic authentication
...nge. The realm value
(case-sensitive), in combination with the canonical root URL of the
server being accessed, defines the protection space. These realms
allow the protected resources on a server to be partitioned into a set
of protection spaces, each with its own authentication scheme and/...
Primary key or Unique index?
...hen it tries to insert the value 1 into this column for a second time.
In MySQL a unique constraint allows multiple NULLs.
It is possible to make a unique index on mutiple columns.
Primary key versus unique index
Things that are the same:
A primary key implies a unique index.
Things that are...
How do I rename a repository on GitHub?
...om following the steps above, you need to make sure your local repository (root folder) is renamed properly and it's pointing to the right remote url :) link. In order to achieve that, do the following:
You might want to use the new given name for your repo. To do so, rename the local folder eithe...
What are the various “Build action” settings in Visual Studio project properties and what do they do
....g.resources), Additionally, if you have the appropriate attributes on the root XAML element in the file, it will create a blah.g.cs file, which will contain a partial class of the "codebehind" for that page; this basically involves a call to the BAML goop to re-hydrate the file into memory, and to ...