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psycopg2: insert multiple rows with one query
... 3, cursor.mogrify() returns bytes, cursor.execute() takes either bytes or strings, and ','.join() expects str instance.
So in Python 3 you may need to modify @ant32 's code, by adding .decode('utf-8'):
args_str = ','.join(cur.mogrify("(%s,%s,%s,%s,%s,%s,%s,%s,%s)", x).decode('utf-8') for x in tup...
Linux command to print directory structure in the form of a tree
Is there any linux command that I can call from a Bash script that will print the directory structure in the form of a tree, e.g.,
...
Entity Framework - Invalid Column Name '*_ID"
...get; set; }
public Guid CategoryId { get; set; }
[Required]
[StringLength(200)]
public string Name { get; set; }
[StringLength(500)]
public string Description { get; set; }
[StringLength(50)]
public string ShortName { get; set; }
[StringLength(500)]
publi...
insert a NOT NULL column to an existing table
... supplied into the existing rows (i.e. 0.0 for float, 0 for integer, empty string for string, etc).
– Michael Tsang
Sep 18 '19 at 15:17
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How can I do a line break (line continuation) in Python?
...ollows:
when a physical line ends in a
backslash that is not part of a string
literal or comment, it is joined with
the following forming a single logical
line, deleting the backslash and the
following end-of-line character. For
example:
if 1900 < year < 2100 and 1 <= month &...
Unable to resolve host “” No address associated with hostname
... give your app the permission to use the internet. Try adding this to your android manifest:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
...
display: inline-block extra margin [duplicate]
...
The word-spacing trick may work for fixing the horizontal extra margin, but it does not fix (in any browser that i've tried) the vertical margin between two inline-block elements that are on separate lines, one below the other. Is there a similar fix for that?
–...
Java Timestamp - How can I create a Timestamp with the date 23/09/2007?
...w Timestamp(time); giving error that no constructor like this which take a string value :(
– Bhanu Sharma
May 14 '14 at 13:02
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Simulating Slow Internet Connection
...ndows, fiddler is a great tool. It has a setting to simulate modem speed, and for someone who wants more control has a plugin to add latency to each request.
I prefer using a tool like this to putting latency code in my application as it is a much more realistic simulation, as well as not making m...
How to export a mysql database using Command Prompt?
I have a database that is quite large so I want to export it using Command Prompt but I don't know how to.
16 Answers
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