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How to prepend a string to a column value in MySQL?
...hat:
UPDATE tbl SET col=CONCAT('test',col);
If you want to get cleverer and only update columns which don't already have test prepended, try
UPDATE tbl SET col=CONCAT('test',col)
WHERE col NOT LIKE 'test%';
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How can I remove a button or make it invisible in Android?
How can I remove a button in Android, or make it invisible?
14 Answers
14
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Numpy how to iterate over columns of array?
Suppose I have and m x n array. I want to pass each column of this array to a function to perform some operation on the entire column. How do I iterate over the columns of the array?
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Add a fragment to the URL without causing a redirect?
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No worries - and it makes you wonder why it always returns it.
– alex
Nov 26 '10 at 2:13
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What does the “|” (single pipe) do in JavaScript?
... 1 0 = 10 (8 + 2)
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1 1 1 0 = 14 (8 + 4 + 2)
Bitwise ORing 6 and 10 will give you 14:
alert(6 | 10); // should show 14
Terribly confusing!
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Wait until a process ends
...cess.Exited event, I believe that you have to configure the process beforehand by setting Process.EnableRaisingEvents to true. Though, considering that this question is over three years old, it may be that Process.EnableRaisingEvents was not a thing at the time of it's having been asked.
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How to use string.replace() in python 3.x
...blem. Python team if you are reading. SORT IT OUT!
– Andrew S
Oct 28 '16 at 0:56
2
Call the metho...
Javascript Array Concat not working. Why?
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Here is the reason why:
Definition and Usage
The concat() method is used to join two or more arrays.
This method does not change the existing arrays, but returns a new
array, containing the values of the joined arrays.
You need to assign the resu...
How do I use .woff fonts for my website?
...ted here. Not all woff files work correctly under latest Firefox versions, and this generator produces 'correct' fonts.
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List OrderBy Alphabetical Order
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I wonder if you want to OrderBy Firstname and Lastname... what should you write?
– balexandre
Apr 16 '09 at 7:03
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