大约有 40,000 项符合查询结果(耗时:0.0432秒) [XML]
How to select date from datetime column?
...f operators in an indexed column is high. These are some test results on a table with 1,176,000 rows:
using datetime LIKE '2009-10-20%' => 2931ms
using datetime >= '2009-10-20 00:00:00' AND datetime <= '2009-10-20 23:59:59' => 168ms
When doing a second call over the same query the di...
Count the number of occurrences of a string in a VARCHAR field?
I have a table like this:
7 Answers
7
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What's the fastest way to do a bulk insert into Postgres?
...e as CSV formatted mapping in PG query statement's. You can try for Big Table?
– Elyor
Sep 9 '14 at 2:03
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Is there any good dynamic SQL builder library in Java? [closed]
... concept of code generation, where meta classes are generated for database tables and fields. This facilitates a nice, clean DSL but it faces a problem when trying to create queries for databases that are only known at runtime, like in the OP's example above. While jOOQ supports a String based appro...
Select all 'tr' except the first one
How can I select all tr elements except the first tr in a table with CSS?
10 Answers
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Best way to check if UITableViewCell is completely visible
I have a UITableView with cells of different heights and I need to know when they are completely visible or not.
10 Answe...
invalid byte sequence for encoding “UTF8”
... trying to import some data into my database. So I've created a temporary table,
20 Answers
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Profiling Vim startup time
...ent directory with all required information. To get per-script information table similar to already present per-function one, use (after opening this file in vim):
" Open profile.log file in vim first
let timings=[]
g/^SCRIPT/call add(timings, [getline('.')[len('SCRIPT '):], ...
Can I inject a service into a directive in AngularJS?
... but know the service interface. For example a directive that will plug a table into an ngResource end point or a generic delete-record button which interacts with any api end point. You don't want to re-implement the table directive for every controller or data-source.
template.html
<div my-d...
Get the IP address of the machine
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I like jjvainio's answer. As Zan Lnyx says, it uses the local routing table to find the IP address of the ethernet interface that would be used for a connection to a specific external host. By using a connected UDP socket, you can get the information without actually sending any packets. The ap...
