大约有 40,000 项符合查询结果(耗时:0.0432秒) [XML]

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UTF-8 all the way through

...character set on all tables and text columns in your database. This makes MySQL physically store and retrieve values encoded natively in UTF-8. Note that MySQL will implicitly use utf8mb4 encoding if a utf8mb4_* collation is specified (without any explicit character set). In older versions of MyS...
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What is __init__.py for?

...ABASE URL'? I tried to replicate this by enclosing the create_engine with 'mysql+mysqldb://root:python@localhost:3306/test' but it does not work. Thanks. – SunnyBoiz Jun 25 '19 at 13:34 ...
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Throw an error in a MySQL trigger

... As of MySQL 5.5, you can use the SIGNAL syntax to throw an exception: signal sqlstate '45000' set message_text = 'My Error Message'; State 45000 is a generic state representing "unhandled user-defined exception". Here is a mo...
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MySQL get the date n days ago as a timestamp

In MySQL, how would I get a timestamp from, say 30 days ago? 3 Answers 3 ...
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rails + MySQL on OSX: Library not loaded: libmysqlclient.18.dylib

...ty easy; Add the library path in your ~/.bash_profile or ~/.profile file: MYSQL=/usr/local/mysql/bin export PATH=$PATH:$MYSQL export DYLD_LIBRARY_PATH=/usr/local/mysql/lib:$DYLD_LIBRARY_PATH If it is still not working (this work for me): sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /u...
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insert multiple rows via a php array into mysql

I'm passing a large dataset into a MySQL table via PHP using insert commands and I'm wondering if its possible to insert approximately 1000 rows at a time via a query other than appending each value on the end of a mile long string and then executing it. I am using the CodeIgniter framework so its f...
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MySQL Orderby a number, Nulls last

... MySQL has an undocumented syntax to sort nulls last. Place a minus sign (-) before the column name and switch the ASC to DESC: SELECT * FROM tablename WHERE visible=1 ORDER BY -position DESC, id DESC It is essentially the...
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Design patterns or best practices for shell scripts [closed]

...only Table__ParameterException="Table__ParameterException" readonly Table__MySqlException="Table__MySqlException" readonly Table__NotInitializedException="Table__NotInitializedException" readonly Table__AlreadyInitializedException="Table__AlreadyInitializedException" # an example for module enum co...
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How to add new column to MYSQL table?

I am trying to add a new column to my MYSQL table using PHP. I am unsure how to alter my table so that the new column is created. In my assessment table I have: ...
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What is the difference between MySQL, MySQLi and PDO? [closed]

What is the difference between MySQL, MySQLi and PDO ? 4 Answers 4 ...