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Creating a copy of a database in PostgreSQL [closed]
...TABASE newdb WITH TEMPLATE originaldb OWNER dbuser;
Still, you may get:
ERROR: source database "originaldb" is being accessed by other users
To disconnect all other users from the database, you can use this query:
SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity
WHERE ...
Get class that defined method
...
In Python 2.7 it does not work. Same error about missing 'im_class'.
– RedX
May 23 '16 at 11:54
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Does order of where clauses matter in SQL?
...RE T1.col_1/T2.col_2 > 10 AND T2.col_2 <> 0 and got a DIVIDE BY 0 error. After I switched the order the conditions the query executed succesfully. Then I switched the order back so I would expect to get the error again, but this time it worked!In the end my conclusion was that for the first...
Bash Templating: How to build configuration files from templates with Bash?
...\}/defined $ENV{$1} ? $ENV{$1} : $&/eg' < template.txt
to replace all ${...} strings with corresponding enviroment variables (do not forget to export them before running this script).
For pure bash this should work (assuming that variables do not contain ${...} strings):
#!/bin/bash
while...
Go Error Handling Techniques [closed]
...ll over the standard libraries in Golang. In other words, Go authors write error handling in this way.
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How to limit the maximum value of a numeric field in a Django model?
...he number entered is outside a given range, the user receives a validation error much as if she had entered character data into a numeric field? I.e. is there some way I can do this that will work regardless of whether the user is editing via the admin or via some other form? I don't want to just li...
When is assembly faster than C?
...omes to precision as they give you 32 bits of precision with a predictable error (float only has 23 bit and it's harder to predict precision loss). i.e. uniform absolute precision over the entire range, instead of close-to-uniform relative precision (float).
Modern compilers optimize this fixed-...
Laravel Schema onDelete set null
... try
$table->...->onDelete(DB::raw('set null'));
If there are any errors, would also be helpful
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How to completely remove a dialog on close
When an ajax operation fails, I create a new div with the errors and then show it as a dialog. When the dialog is closed I would like to completely destroy and remove the div again. How can I do this? My code looks something like this at the moment:
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Error java.lang.OutOfMemoryError: GC overhead limit exceeded
I get this error message as I execute my JUnit tests:
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