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How to choose the id generation strategy when using JPA and Hibernate
...table. Do not use in a cluster.
identity
supports identity columns in DB2, MySQL, MS SQL Server, Sybase and HypersonicSQL. The returned identifier is of type long, short or int.
sequence
uses a sequence in DB2, PostgreSQL, Oracle, SAP DB, McKoi or a generator in Interbase. The returned identifier is...
How to change current working directory using a batch file
...need some help in writing a batch file.
I have a path stored in a variable root as follows:
4 Answers
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How to get the input from the Tkinter Text Widget?
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Here is how I did it with python 3.5.2:
from tkinter import *
root=Tk()
def retrieve_input():
inputValue=textBox.get("1.0","end-1c")
print(inputValue)
textBox=Text(root, height=2, width=10)
textBox.pack()
buttonCommit=Button(root, height=1, width=10, text="Commit",
...
COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better? [duplicate]
... are using as well as the type of table in some cases.
For example, using MySQL, count(*) will be fast under a MyISAM table but slow under an InnoDB. Under InnoDB you should use count(1) or count(pk).
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How to change the docker image installation directory?
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With recent versions of Docker, you would set the value of the data-root parameter to your custom path, in /etc/docker/daemon.json
(according to https://docs.docker.com/engine/reference/commandline/dockerd/#daemon-configuration-file).
With older versions, you can change Docker's storage base...
ActiveRecord: List columns in table from console
...console. It will enter the shell of your database, whether it is sqlite or mysql.
Then, you can query the table columns using sql command like:
pragma table_info(your_table);
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Difference between static STATIC_URL and STATIC_ROOT on Django
I am confused by static root and want to clarify things.
3 Answers
3
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How to list running screen sessions?
...ntle ~ # ls -laR /var/run/screen/
/var/run/screen/:
total 1
drwxrwxr-x 4 root utmp 96 Mar 1 2005 .
drwxr-xr-x 10 root root 840 Feb 1 03:10 ..
drwx------ 2 josh users 88 Jan 13 11:33 S-josh
drwx------ 2 root root 48 Feb 11 10:50 S-root
/var/run/screen/S-josh:
total 0
drwx------ 2 josh u...
Parsing XML with namespace in Python via 'ElementTree'
...mespaces = {'owl': 'http://www.w3.org/2002/07/owl#'} # add more as needed
root.findall('owl:Class', namespaces)
Prefixes are only looked up in the namespaces parameter you pass in. This means you can use any namespace prefix you like; the API splits off the owl: part, looks up the corresponding n...
Querying data by joining two tables in two database on different servers
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is it possible with php-mysql ..if yes then can you please suggest me a way how can i grow with that option?
– Jhanvi
Sep 26 '12 at 8:47
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