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MySQL: Set user variable from result of query

...ts, the assignment operator must be := and not = because = is treated as a comparison operator in non-SET statements. UPDATE: Further to comments below, you may also do the following: SET @user := 123456; SELECT `group` FROM user LIMIT 1 INTO @group; SELECT * FROM user WHERE `group` = @group; ...
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How do I convert a string to a double in Python?

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MySQL: Invalid use of group function

...ion. HAVING is like WHERE, only it happens after the COUNT value has been computed, so it'll work as you expect. Rewrite your subquery as: ( -- where that pid is in the set: SELECT c2.pid -- of pids FROM Catalog AS c2 -- from catalog WHERE c2.pid = c1....
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How to select following sibling/xml tag using xpath

... How would I accomplish the nextsibling and is there an easier way of doing this? You may use: tr/td[@class='name']/following-sibling::td but I'd rather use directly: tr[td[@class='name'] ='Brand']/td[@class='desc'] This assumes...
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Disable firefox same origin policy

...e OS X gui, it may create some hidden files, so you 'd be better using the command line. 3) Installing the xpi You can just drag and drop the xpi to firefox, or go to: "about:addons", click on the cog on the top right corner and select "install add on from file", then select you .xpi file. Now, re...
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JavaScript: Is there a way to get Chrome to break on all errors?

...wered with is now invalid.The newer URL would be https://developers.google.com/web/tools/chrome-devtools/javascript/add-breakpoints#exceptions as of 2016-11-11. I realize this question has an answer, but it's no longer accurate. Use the link above ^ (link replaced by edited above) - you can now ...
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How to escape indicator characters (i.e. : or - ) in YAML

... Quotes: "url: http://www.example-site.com/" To clarify, I meant “quote the value” and originally thought the entire thing was the value. If http://www.example-site.com/ is the value, just quote it like so: url: "http://www.example-site.com/" ...
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View entire check in history TFS

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writing some characters like '

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