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OceanBase使用libeasy原理源码分析：客户端 - 数据库(内核) - 清泛网 - 专...
...对于OceanBase 0.4的mergeserver来说，实际上是int ObMergeCallback::sql_process(easy_request_t* r)
// 将响应事件进mergeserver的finish queue队列
easy_io_process_pt *process;
easy_io_cleanup_pt *cleanup;
easy_addr_t addr;
easy_list...
SQLAlchemy - Getting a list of tables
...t this in the documentation, but how can I get a list of tables created in SQLAlchemy?
9 Answers
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What is the best way to implement “remember me” for a website? [closed]
...ysical access to the box)
By reading it from the server database (probably SQL Injection, but could be anything)
By an XSS hack (or similar client-side exploit)
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.Contains() on a list of custom class objects
...to perform the check on.
This also has the benefit of working for LINQ-to-SQL queries as well as in-memory queries, where Contains doesn't.
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How can you do paging with NHibernate?
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This performs a SELECT TOP query in SQL Server. Try it with SetFirstResult(1).SetMaxResult(2);
– Chris S
Feb 8 '09 at 17:02
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How to show the last queries executed on MySQL?
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For those blessed with MySQL >= 5.1.12, you can control this option globally at runtime:
Execute SET GLOBAL log_output = 'TABLE';
Execute SET GLOBAL general_log = 'ON';
Take a look at the table mysql.general_log
If you prefer to output to a fi...
MySQL - Get row number on select
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@Jared, MySQL syntax just needs something to be there. It can be anything, even x and y.
– Pacerier
Apr 24 '15 at 11:10
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Change from SQLite to PostgreSQL in a fresh Rails project
I have a rails app that's databases are in SQLite (The dev and production). Since I am moving to heroku, I want to convert my database to PostgreSQL.
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How to get the nth occurrence in a string?
...it. A different though critical example: always enclose data when doing an SQL INSERT as mysqli_real_escape_string does not protect against single quote hacks. Much of professional coding is not just having good habits though also understanding why such habits are important. :-)
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No mapping found for field in order to sort on in ElasticSearch
.... I was assuming it would treat null as being at the start or end (as with SQL ordering) but I believe it also triggers this error.
So if you see this error, you may need to ensure the sort attribute has a default value when it's sent to ElasticSearch.
I had this error with Rails+ElasticSearch+Tir...