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quick random row selection in Postgres
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I tried this with a subquery and it worked fine. Offset, at least in Postgresql v8.4.4 works fine.
select * from mytable offset random() * (select count(*) from mytable) limit 1 ;
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How to configure robots.txt to allow everything?
...ver, formally (per the original spec) it’s an invalid record, because at least one Disallow field is required:
At least one Disallow field needs to be present in a record.
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What is the proper #include for the function 'sleep()'?
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@LandonZeKepitelOfGreytBritn: At least the C function time() does not created a delay, at least not a well defined delay, based on the arguments passed.
– alk
Sep 10 at 10:08
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Difference between one-to-many and many-to-one relationship
...many-to-one" could be applied to any inclusion dependency that involves at least one candidate key without necessarily implying which side may be optional.
– nvogel
Jun 21 '16 at 21:23
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Get Insert Statement for existing row in MySQL
...es will have syntax errors due to mismatching single-quotes. You should at least use mysql_real_escape_string if going this route.
– Eric Seastrand
Aug 9 '17 at 21:32
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Show Youtube video source into HTML5 video tag?
...ieve the page source. I think Youtube generates this HTML dynamically (at least currently) so in testing if I copy in Firefox this works in Firefox, but not Chrome, for example.
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View's SELECT contains a subquery in the FROM clause
...chniques described in the other answers may be a more viable solution - at least on the shorter run.
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Find rows with multiple duplicate fields with Active Record, Rails & Postgres
...roup returns an empty array. How can I return the whole User model, or at least include the :id?
– Ashbury
Oct 27 '15 at 8:37
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How can I shrink the drawable on a button?
...e with android:width and android:height properties.
This way you could at least get the same size for different screens.
The drawback is that it is not exactly like fitXY which would scale image width to fit X and scale image height accordingly.
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Can you require two form fields to match with HTML5?
...ange="this.setCustomValidity(this.validity.patternMismatch ? 'Must have at least 6 characters' : ''); if(this.checkValidity()) form.password_two.pattern = this.value;" placeholder="Password" required>
<input id="password_two" name="password_two" type="password" pattern="^\S{6,}$" onchange="th...