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Difference between VARCHAR and TEXT in MySQL [duplicate]
..., where c is the length of the stored string.
cannot be (fully) part of an index. One would need to specify a prefix length.
VARCHAR(M)
variable max size of M characters
M needs to be between 1 and 65535
takes 1 + c bytes (for M ≤ 255) or 2 + c (for 256 ≤ M ≤ 65535) bytes of disk space whe...
Configure nginx with multiple locations with different root folders on subdomain
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You need to use the alias directive for location /static:
server {
index index.html;
server_name test.example.com;
root /web/test.example.com/www;
location /static/ {
alias /web/test.example.com/static/;
}
}
The nginx wiki explains the difference between root and alias bette...
Naming convention for unique constraint
...K_Table_ReferencedTable , respectively). The IX_Table_Column naming for indexes is also fairly standard.
3 Answers
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Rails 3 migrations: Adding reference column?
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remember to add the index with user:integer:index
– rickypai
Dec 1 '12 at 17:40
3
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What does the message “rewrite … (90%)” after a Git commit mean? [duplicate]
...
Its a measure of the similarity index. The similarity index is the percentage of unchanged lines. git thinks your file is text.
share
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improve this answe...
Colon (:) in Python list index [duplicate]
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Remember that [1:5] starts with the object at index 1, and the object at index 5 is not included. You can also make a soft copy of a list with [:]
– Garrett Hyde
Oct 25 '10 at 7:51
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Backbone.js: How to get the index of a model in a Backbone Collection?
Is there a way to find the index of a model within a collection?
1 Answer
1
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C++/COM VARIANT实现二维数组 - C/C++ - 清泛网 - 专注C/C++及内核技术
... NULL;
/*对二维数组的元素进行逐个赋值*/
long index[2] = {0, 0};
long lFirstLBound = 0;
long lFirstUBound = 0;
long lSecondLBound = 0;
long lSecondUBound = 0;
SafeArrayGetLBound(psa, 1, &lFirstLBound);
SafeArrayGetUBound(psa, 1, ...
【phpcms v9】html静态化设置及URL规则优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...RL规则优化1、默认的栏目生成规则是：{$categorydir}{$catdir} index html|{$categorydir}{$catdir} {$page} html具体生成html的时候，将会显示成：news china 1000 html。这个有点小问题，
1、默认的栏目生成规则是：
{$categorydir}{$catdir}/index.html|{$c...
Remove Identity from a column in a table
...able
Script the table to be created; rename everything e.g. 'MyTable2', 'MyIndex2', etc.
Remove the IDENTITY specification.
You should now have two "identical"-ish tables, one full, the other empty with no IDENTITY.
Run ALTER TABLE [Original] SWITCH TO [Original2]
Now your original table will be emp...