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How to do 3 table JOIN in UPDATE query?
... b.join_col AND a.column_a = b.column_b
JOIN TABLE_C c ON [condition]
SET a.column_c = a.column_c + 1
EDIT:
For general Update join :
UPDATE TABLEA a
JOIN TABLEB b ON a.join_colA = b.join_colB
SET a.columnToUpdate = [something]
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ConnectionTimeout versus SocketTimeout
...this only works with connections where data is received all the time.
By setting socket timeout to 1 this would require that every millisecond new data is received (assuming that you read the data block wise and the block is large enough)!
If only the incoming stream stalls for more than a milli...
Decreasing height of bootstrap 3.0 navbar
...sn't work... check my answer on this page... the min-height for .navbar is set to 50px by default, so if you set the height to 28px it will be overridden by the 50px min-height...
– patrick
Nov 2 '13 at 0:04
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Deploying my application at the root in Tomcat
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If Tomcat is set to autodeploy, you don't have to worry about option 2.
– Buhake Sindi
Mar 16 '11 at 16:54
4
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MySQL stored procedure vs function, which would I use when?
...stored procedure (not functions) is that a procedure can generate a result set, or even multiple result sets, which the caller processes the same way as the result of a SELECT statement. However, the contents of such result sets cannot be used directly in expression.
Stored routines (referring to b...
How to make a HTML Page in A4 paper size page(s)?
...aper), as opposed to continuous media (think scrollbars). Style sheets can set the size of pages and their margins. Page templates can be given names and elements can state which named page they want to be printed on. Also, elements in the source document can force page breaks. Here is a snippet fro...
What is a Context Free Grammar?
...specifically, they describe formal languages.
A formal language is just a set (mathematical term for a collection of objects) of strings (sequences of symbols... very similar to the programming usage of the word "string"). A simple example of a formal language is the set of all binary strings of le...
CSS: how to position element in lower right?
... the first relatively positioned parent element, or the window. Because we set the box's position to relative, .bet_time positions its right edge to the right edge of .box and its bottom edge to the bottom edge of .box
share...
How do I pre-populate a jQuery Datepicker textbox with today's date?
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This is concise and does the job (obsolete):
$(".date-pick").datepicker('setDate', new Date());
This is less concise, utilizing chaining allows it to work in chrome (2019-06-04):
$(".date-pick").datepicker().datepicker('setDate', new Date());
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Use rvmrc or ruby-version file to set a project gemset with RVM?
I use RVM, the Ruby Version Manager to specify a Ruby version and a set of gems for each of my Rails projects.
5 Answers
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