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How to list of all the tables defined for the database when using active record?
...tionAdapters::SchemaStatements#tables. This method is undocumented in the MySQL adapter, but is documented in the PostgreSQL adapter. SQLite/SQLite3 also has the method implemented, but undocumented.
>> ActiveRecord::Base.connection.tables
=> ["accounts", "assets", ...]
See activerecor...
How to use npm with node.exe?
... separately.
I was facing permission issue while running npm (npm install mysql), from the path where my nodejs resided, i.e.
C:\Program Files (x86)\nodejs
Then I followed below steps:
1) Added C:\Program Files (x86)\nodejs\npm in environment variables - Path system variable.
2) went back to onl...
Run PHP Task Asynchronously
... Perl or just about any other language. There are Gearman UDF plugins for MySQL and you can also use Net_Gearman from PHP or the gearman pear client.
– Justin Swanhart
Dec 22 '12 at 4:57
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What is the PostgreSQL equivalent for ISNULL()
...
I suspect these commenters are MySQL users who didn't realize the question starts with, "In MS SQL Server, ..." MySQL has an ISNULL() function that takes a single argument and returns 0 or 1. T-SQL's version takes two arguments and behaves like COALESCE ...
Difference between “read commited” and “repeatable read”
...able read simply reads a "snapshot" not the actual data. From the docs dev.mysql.com/doc/refman/5.0/en/…: "All consistent reads within the same transaction read the snapshot established by the first read."
– Derek Litz
Jan 17 '13 at 16:40
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How to use php serialize() and unserialize()
...gone through the page u referred. can u please show an example in php, and mysql (if necessary) ?
– Istiaque Ahmed
Dec 27 '11 at 6:52
2
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How to define two fields “unique” as couple
... How would you handle this say if volume_number could be null? Mysql won't seem to enforce unique in that case.
– Greg
Jun 27 '11 at 17:28
27
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usr/bin/ld: cannot find -l
...ose mode.
For example, I encountered this issue while trying to compile MySQL with ZLIB support. I was receiving an error like this during compilation:
/usr/bin/ld: cannot find -lzlib
I did some Googl'ing and kept coming across different issues of the same kind where people would say to make ...
How do I write LINQ's .Skip(1000).Take(100) in pure SQL?
...
No, but you could emulate MySQL's LIMIT clause (Stack Overflow link) to achieve the same result.
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廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
...1)
GIT-hash: 833d830e0152d1e457fa7856e71e11248ccf3f70 build by root@db01.mysql.com, 2015-06-24 13:47:15
m:res cs ro ds p mounted fstype
0:r0 Connected Secondary/Secondary Inconsistent/Inconsistent C
cs：表示连接状态
ro: 表示主从关系 上面的表示都为从
d...