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Reference alias (calculated in SELECT) in WHERE clause
... same expression.
PS your fears seem unfounded. In this simple example at least, SQL Server is smart enough to only perform the calculation once, even though you've referenced it twice. Go ahead and compare the plans; you'll see they're identical. If you have a more complex case where you see the e...
How to execute a raw update sql with dynamic binding in rails
...e#send method to invoke the sanitize_sql_for_assignment makes the Ruby (at least the 1.8.7 version) skip the fact that the sanitize_sql_for_assignment is actually a protected method.
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Android ListView Divider
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I agree. They should at least mention that rule about px as an example of why they have it.
– Joe Plante
Oct 29 '12 at 21:11
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How do I programmatically click a link with javascript?
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This function works in at least Firefox, and Internet Explorer. It runs any event handlers attached to the link and loads the linked page if the event handlers don't cancel the default action.
function clickLink(link) {
var cancelled = false;
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How to stretch div height to fill parent div - CSS
...nded within the overall browser window by a fixed amount.
What worked, at least on firefox, was this
<div style="position: absolute; top: 127px; left: 75px;right: 75px; bottom: 50px;">
Insofar as the actual window is not forced into scrolling, the div preserves its boundaries to the window ...
Hamcrest compare collections
... that first assertion will fail. See hasItems if you want to check that at least those elements are present.
– Joe
Jul 7 '15 at 10:37
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SQL exclude a column using SELECT * [except columnA] FROM tableA?
...intenance-light best practice is to specify only the required columns.
At least 2 reasons:
This makes your contract between client and database stable. Same data, every time
Performance, covering indexes
Edit (July 2011):
If you drag from Object Explorer the Columns node for a table, it puts a...
pandas GroupBy columns with NaN (missing) values
...is:
df['b'] = df['b'].apply(lambda x: x if not np.isnan(x) else -1)
(At least that's the behavior for Pandas 0.19.2. Sorry to add it as a different answer, I do not have enough reputation to comment.)
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How do you perform a left outer join using linq extension methods
... an alternative to the currently selected answer that (in my experience at least) has been more commonly what I'm after
// Option 1: Expecting either 0 or 1 matches from the "Right"
// table (Bars in this case):
var qry = Foos.GroupJoin(
Bars,
foo => foo.Foo_Id,
bar...
Setting up foreign keys in phpMyAdmin?
... and change their type to "INNO DB"
Make sure ID is the primary key (or at least an indexed column) of the PARENT table.
In the CHILD table, define an index for the PID column.
While viewing the structure tab of the CHILD table, click the "relation view" link just above the "add fields" section.
You...