大约有 6,887 项符合查询结果（耗时：0.0295秒） [XML]
MySQL query String contains
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@oedo: Depends. LIKE %...% won't use an index if one is present, so they should be equivalent; LIKE ...% would use an index if present. If performance is a real concern, Full Text Search (FTS) would be a better approach.
– OMG Ponies
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How to trim white spaces of array values in php
...rotime(true);
for ($i = 0; $i < 100000; $i++) {
foreach ($array as $index => $elem) {
$array[$index] = trim($elem);
}
}
$time = (microtime(true) - $start);
echo "Foreach: " . $time . " seconds\n";
// FOR
$start = microtime(true);
for ($i = 0; $i < 100000; $i++) {
for ($...
How to add a button dynamically in Android?
... Toast.makeText(view.getContext(),
"Button clicked index = " + id_, Toast.LENGTH_SHORT)
.show();
}
});
}
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When to use Hadoop, HBase, Hive and Pig?
... you work with RDBMS and have to select what to use - full table scans, or index access - but only one of them.
If you select full table scan - use hive. If index access - HBase.
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Mix Razor and Javascript code
...o make a Scripts.cshtml file and place your mixed javascript/razor there.
Index.cshtml
<div id="Result">
</div>
<button id="btnLoad">Click me</button>
@section scripts
{
@Html.Partial("Scripts")
}
Scripts.cshtml
<script type="text/javascript">
var url = "...
Parallel.ForEach vs Task.Run and Task.WhenAll
...am
{
static void Main(string[] args)
{
var indexes = new int[] { 1, 2, 3 };
RunExample((prefix) => Parallel.ForEach(indexes, (i) => DoSomethingAsync(i, prefix)),
"Parallel.Foreach");
Console.ForegroundColor = ConsoleColo...
Eclipse/Java code completion not working
...t Eclipse
Go to workspace/.metadata/.plugins/org.eclipse.jdt.core
Remove *.index and savedIndexNames.txt
Restart Eclipse and search Ctrl+T for the offending type. The indexes will be rebuilt.
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What is the recommended batch size for SqlBulkCopy?
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One thing to consider is if the table is empty and has indexes. In those cases you might want to upload everything in one batch as mentioned here: technet.microsoft.com/en-us/library/ms177445(v=sql.105).aspx "If you bulk import data into an empty table with indexes and you specif...
Renaming table in rails
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This will also migrate any indexes from :old_table_name to :new_table_name
– Gavin Miller
Sep 18 '13 at 20:45
7
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do you have kcachegrind like profiling tools for mac [closed]
...chegrind, This was the error for both apps ------------------- Warning: No index(es) found! Have you synced your source indexes? Error: Port kcachegrind not found---------------- any clue whats going on
– indianwebdevil
Dec 27 '10 at 8:10
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