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List tables in a PostgreSQL schema
...
You can select the tables from information_schema
SELECT * FROM information_schema.tables
WHERE table_schema = 'public'
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string.Join on a List or other type
...le<T>)
If you can't upgrade, you can achieve the same effect using Select and ToArray.
return string.Join(",", a.Select(x => x.ToString()).ToArray());
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Update a table using JOIN in SQL Server?
...n table expression) - see here and here for more details:
;WITH t2 AS
(
SELECT [key], CalculatedColumn = SUM(some_column)
FROM dbo.table2
GROUP BY [key]
)
UPDATE t1
SET t1.CalculatedColumn = t2.CalculatedColumn
FROM dbo.table1 AS t1
INNER JOIN t2
ON t1.[key] = t2.[key];
The reas...
Pass entire form as data in jQuery Ajax function
... use serialize() on the form element.
Please be mindful that multiple <select> options are serialized under the same key, e.g.
<select id="foo" name="foo" multiple="multiple">
<option value="1">one</option>
<option value="2">two</option>
<option v...
What is Ad Hoc Query?
... SQL query you just loosely type out where you need it
var newSqlQuery = "SELECT * FROM table WHERE id = " + myId;
...which is an entirely different query each time that line of code is executed, depending on the value of myId. The opposite of an ad hoc query is a predefined query such as a Store...
Trim trailing spaces in Xcode
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You can create a script and bind it to a keyboard shortcut:
Select Scripts Menu > Edit User Scripts...
Press the + button and select New Shell Script
Give it a name like "Strip Trailing Spaces", and give it a shortcut like ⌃⇧R.
Set Input to "Selection" and Output to "Replace Se...
Elegant way to combine multiple collections of elements?
...in a collection (e.g., of type List<List<int>> , I could use SelectMany to combine them all into one collection.
...
How to install an APK file on an Android phone?
...SB debugging on the phone itself (by starting the Settings application and selecting Applications > Development > USB Debugging), install the Android USB device driver if you haven’t already (Windows only), and then plug the phone into your computer using the USB cable that came with the pho...
How do I edit an incorrect commit message with TortoiseGit?
...to reset, amend and cherry-pick
Context menu -> TortoiseGit -> Log
Select the commit -> Context menu -> Reset
Hard Reset (this will discard all work contained in commits above the selected commit as well as any un-committed changes in the working directory)
OK
Follow above 1-4 steps to...
DataTrigger where value is NOT null?
...
I'm using this to only enable a button if a listview item is selected (ie not null):
<Style TargetType="{x:Type Button}">
<Setter Property="IsEnabled" Value="True"/>
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=lvMyList, Path=Selecte...