大约有 40,000 项符合查询结果（耗时：0.0703秒） [XML]
Does PostgreSQL support “accent insensitive” collations?
...t's possible to specify an "accent insensitive" collation (for a database, table or column), which means that it's possible for a query like
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python requests file upload
...the following results. Before, running the open there is no record in lsof table about the filename. Then after the open is executed, multiple records appear with read access. After executing the requests.post, the records are still there indicating that the file did not close.
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Difference between Hashing a Password and Encrypting it
...rrence of collisions. You can attack a secure hash by the use of a rainbow table, which you can counteract by applying a salt to the hash before storing it.
Encrypting is a proper (two way) function. It's reversible, you can decrypt the mangled string to get original string if you have the key.
Th...
Insert text with single quotes in PostgreSQL
I have a table test(id,name) .
7 Answers
7
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Why does parseInt(1/0, 19) return 18?
...es as if you called parseInt("I", 19), which converts to decimal 18 by the table above.
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How to convert timestamp to datetime in MySQL?
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You can use
select from_unixtime(1300464000,"%Y-%m-%d %h %i %s") from table;
For in details description about
from_unixtime()
unix_timestamp()
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dynamically add and remove view to viewpager
...ate static final int DATABASE_VERSION = 1;
private static final String TABLE_NAME = "diary";
private static final String TITLE = "id";
private static final String BODY = "content";
DBHelper dbHelper = new DBHelper(this);
ArrayList<String> frags = new ArrayList<String>...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...socket，16 real cores， 开启hyper-threading， 总共32个vcpu。 16个table，每个5M row。
OLTP_RO测试包含5个select查询：select_ranges, select_order_ranges, select_distinct_ranges, select_sum_ranges,
可以看到在多核心或者多线程的场景下， jemalloc和tcmalloc带来...
Single Sign On across multiple domains [closed]
...ou can bang out a cookie-based solution. Think GUID and a database session table.
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How to style a checkbox using CSS
...leapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table style="width:100%">
<tr>
<td>Normal:</td>
<td><input type="checkbox" /></td>
<td><input type="checkbox" checked="checked" /></td>
<td>...