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PostgreSQL: How to pass parameters from command line?
...placeholders. I wanted to test this same query directly from the psql command line (outside the script). I want to avoid going in and replacing all the ? with actual values, instead I'd like to pass the arguments after the query.
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Display names of all constraints for a table in Oracle SQL
...ctionary, specifically the USER_CONS_COLUMNS view to see the table columns and corresponding constraints:
SELECT *
FROM user_cons_columns
WHERE table_name = '<your table name>';
FYI, unless you specifically created your table with a lower case name (using double quotes) then the table na...
Target elements with multiple classes, within one rule
I have some HTML that would have elements with multiple classes, and I need to assign them within one rule, so that the same classes could be different within different containers. Say I have this in my CSS:
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How do I run a program with a different working directory from current, from Linux shell?
...our prompt of the parent shell, in the directory you started from.
Error handling: To avoid running the program without having changed the directory, e.g. when having misspelled /c, make the execution of helloworld conditional:
(cd /c && /a/helloworld)
Reducing memory usage: To avoid hav...
Using NumberPicker Widget with Strings
Is there a way to use the Android NumberPicker widget for choosing strings instead of integers?
5 Answers
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Undoing a 'git push'
...s the phrase [remote rejected].
In this scenario, you will have to delete and recreate the branch.
git push origin :alpha-0.3.0
git push origin cc4b63bebb6:refs/heads/alpha-0.3.0
If this doesn't work - perhaps because you have receive.denyDeletes set, then you have to have direct access to the r...
How to pass boolean values to a PowerShell script from a command prompt
...rArgumentTransformationError,f
Instead of using -File you could try -Command, which will evaluate the call as script:
CMD> powershell.exe -NoProfile -Command .\RunScript.ps1 -Turn 1 -Unify $false
Turn: 1
Unify: False
As David suggests, using a switch argument would also be more idiomatic, si...
How many concurrent AJAX (XmlHttpRequest) requests are allowed in popular browsers?
...nt maximum.
IE6, IE7 - have a limit of two. IE8 is 6 if you have a broadband - 2 (if it's a dial up).
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Add a property to a JavaScript object using a variable as the name?
I'm pulling items out of the DOM with jQuery and want to set a property on an object using the id of the DOM element.
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Skip first entry in for loop in python?
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I found that doing cars.pop(0) and cars.pop() works well.
– dreamwork801
Oct 23 '18 at 13:37
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