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What's the difference between utf8_general_ci and utf8_unicode_ci?
...ncoding. The differences are in how text is sorted and compared.
Note: In MySQL you have to use utf8mb4 rather than utf8. Confusingly, utf8 is a flawed UTF-8 implementation from early MySQL versions which remains only for backward compatibility. The fixed version was given the name utf8mb4.
Note: N...
GetProperties() to return all properties for an interface inheritance hierarchy
...etProperties( bindingAttr);
}
return type.GetInterfaces().Union(new Type[] { type }).SelectMany(i => i.GetProperties(bindingAttr)).Distinct();
}
or, for an individual property:
static public PropertyInfo GetPropertyOrInterfaceProperty(this Type type, string propertyNa...
MySQL load NULL values from CSV data
...
MySQL manual says:
When reading data with LOAD DATA
INFILE, empty or missing columns are
updated with ''. If you want a NULL
value in a column, you should use \N
in the data file. The literal word
“NULL” ma...
Creating an R dataframe row-by-row
...based file systems are a good example (which evolved from concepts such as union mounts, which also ply both sides).
If R Core wanted to do this, underlying vector storage could function like a union mount. One reference to the vector storage might be valid for subscripts 1:N, while another refe...
How to put more than 1000 values into an Oracle IN clause [duplicate]
...e the following form:
select * from table1 where ID in (1,2,3,4,...,1000)
union all
select * from table1 where ID in (1001,1002,...)
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Change One Cell's Data in mysql
How can I change the data in only one cell of a mysql table.
I have problem with UPDATE because it makes all the parameters in a column change but I want only one changed. How?
...
改用 443 端口连接 Github 修复 git push 时出现 Connection timed out 的...
...s.
不想改用 https 协议，因为 https 每次都要询问用户名，密码太烦了。最后找到了一个使用 443 端口连接 github 的方法：
修改 ~/.ssh/config 中 github.com 的配置， Hostname 改为 ssh.github.com, Port 改为 443:
Host github.com
Hostname ssh.github.c...
How do I change the data type for a column in MySQL?
...
http://dev.mysql.com/doc/refman/5.1/en/alter-table.html
ALTER TABLE tablename MODIFY columnname INTEGER;
This will change the datatype of given column
Depending on how many columns you wish to modify it might be best to generate a scri...
MySQL Update Inner Join tables query
I have no idea what the problem is. Using MySQL 5.0 I get a compile error when attempting to run the following MySQL update query:
...
select into in mysql
I am a MSSQL user and now I am converting my database to MySQL. I am writing the following query in MySQL:
2 Answers
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