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CHECK constraint in MySQL is not working

...ike =, the := operator is never interpreted as a comparison operator. This means you can use := in any valid SQL statement (not just in SET statements) to assign a value to a variable. https://dev.mysql.com/doc/refman/5.6/en/assignment-operators.html Concerning backtick identifier quotes: The iden...
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Using querySelectorAll to retrieve direct children

... Oh, bother! By which I mean: you're exactly right. I've updated my answer to make it more clear that it's not a very good one in the OP's case. – natevw Jun 25 '13 at 22:32 ...
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What's “tools:context” in Android layout files?

... : tools.android.com/_/rsrc/1337185954574/recent/newconfigchooser/… , it means that doesn't have to be a class that extends Context , right? if so, i think it does more that what you are saying , though i'm not sure what . – android developer Jun 18 '12 at 8...
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How to replace a hash key with another key

...y, but you should be aware that in ruby, unlike javascript and others, /^/ means 'start of string OR LINE', and /$/ means 'end of string OR LINE'. It's unlikely that the keys have newlines in them in this case, but you should be aware that using those two operators in ruby is not only error prone ...
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What do the crossed style properties in Google Chrome devtools mean?

...mes, some of these properties are struck-through. What do these properties mean? 5 Answers ...
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Regex: match everything but specific pattern

... This answer is wrong, a quick test shows that. I think what you meant is ^((?!foo).)*$ (stackoverflow.com/a/406408/3964381) – gilad mayani Jun 22 '17 at 12:28 5 ...
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file_put_contents - failed to open stream: Permission denied

...es whose content must be changed. Reading permissions (4) for a directory means being able to collect all files and directories with their metadata within a directory. Write permissions (2) gives the permission to change the content of the directory. Implying adding and removing files, changing per...
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Cannot push to Git repository on Bitbucket

... possible. Don't type the $ or any lines that do not begin with $ (the $ means this is something you type into GitBash). Open GitBash Set your global info if you haven't already: $ git config --global user.name "Your Name" $ git config --global user.email "you@example.com" Check for OpenSSH: ...
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Difference between a user and a schema in Oracle?

... If you mean "can objects in a single schema be 'owned' by multiple users" the answer is No. If you mean "can objects in a single schema be used by multiple users" the answer is most certainly Yes – Mahesh ...
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Oracle SQL Query for listing all Schemas in a DB

... @a_horse_with_no_name does that mean a schema in oracle mean it's a user ? I mean a schema = user ? and under that user all the tables created same like MySQL ? – Osama Al-Banna Jun 15 '16 at 14:12 ...