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SQL Query to concatenate column values from multiple rows in Oracle
...) AS varchar2_ntt)) AS Vals FROM B GROUP BY pid;
COLLECT with ordering is bit slower(00:00:07.08):
SELECT pid, TO_STRING(CAST(COLLECT(Desc ORDER BY Desc) AS varchar2_ntt)) AS Vals FROM B GROUP BY pid;
All other techniques were slower.
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CSS: background image on background color
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python pandas remove duplicate columns
... the number of columns you can have. For me it failed for a dataframe with 100,000 rows for instance, as this yields 100,000 columns after transposing, which is not possible
– Eelco van Vliet
Mar 3 at 10:08
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TFS: How can you Undo Checkout of Unmodified files in a batch file
...much. When I used it to test it for my customer, I had to click around a bit in Team Explorer and make sure that there were changes to undo. It's possible that it only appears when you only have pending changes queued for a commit that this option appears. ( or one branch changes only)...
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Declaring an enum within a class
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answered Mar 23 '10 at 21:42
Peter AlexanderPeter Alexander
49.1k1010 gold badges111111 silver badges161161 bronze badges
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Can I access a form in the controller?
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Though alluded to in other comments I thought I'd spell it out a bit for those using the "Controller As" syntax:
<div ng-controller="MyController as ctrl">
<form name="ctrl.myForm">
...inputs
Dirty? {{ctrl.myForm.$dirty}}
<button ng-click="ctrl.saveChanges()"&...
How can I use Guzzle to send a POST request in JSON?
...mple here)
– Pierre de LESPINAY
Sep 10 '15 at 12:27
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It's recommended to use RequestOptions cons...
How to set a Django model field's default value to a function call / callable (e.g., a date relative
...t_my_date?
– Sadan A.
Oct 18 '18 at 10:29
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What's the difference between UTF-8 and UTF-8 without BOM?
...BOM to detect that something is UTF-8:
It is not sufficient because an arbitrary byte sequence can happen to start with the exact sequence that constitutes the BOM.
It is not necessary because you can just read the bytes as if they were UTF-8; if that succeeds, it is, by definition, valid UTF-8.
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Javascript objects: get parent [duplicate]
...ry to get main.child.parent.name now you will get it right.
It is a little bit tricky but it works fine.
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