大约有 40,000 项符合查询结果(耗时:0.0474秒) [XML]
Why use the SQL Server 2008 geography data type?
... of 18 bytes) for a real comparison.
So comparing storage types:
CREATE TABLE dbo.Geo
(
geo geography
)
GO
CREATE TABLE dbo.LatLng
(
lat decimal(15, 12),
lng decimal(15, 12)
)
GO
INSERT dbo.Geo
SELECT geography::Point(12.3456789012345, 12.3456789012345, 4326)
UNION ALL
SELEC...
Laravel Eloquent ORM Transactions
...ging this.
After reading THIS stackoverflow answer, I realized my database tables were using MyISAM instead of InnoDB.
For transactions to work on Laravel (or anywhere else as it seems), it is required that your tables are set to use InnoDB
Why?
Quoting MySQL Transactions and Atomic Operations docs ...
Most underused data visualization [closed]
...d.date <- Sys.Date()
quote <- paste("http://ichart.finance.yahoo.com/table.csv?s=",
stock, "&a=", substr(start.date,6,7),
"&b=", substr(start.date, 9, 10),
"&c=", substr(start.date, 1,4),
"&d=", substr(end.date,6,...
How to get default gateway in Mac OSX
...sy to find the required field. The sample result is as following:
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif Expire
default 192.168.195.1 UGSc 17 0 en2
127 127.0.0.1 UCS 0...
Is the SQL WHERE clause short-circuit evaluated?
...on algorithm that takes into account a lot of things (indexes, statistics, table size, resources, etc) to come up with an effective execution plan. After this evaluation, you can't say for sure that your short circuit logic is guaranteed.
I ran into the same question myself sometime ago and my res...
Pagination on a list using ng-repeat
...
Check out this directive: https://github.com/samu/angular-table
It automates sorting and pagination a lot and gives you enough freedom to customize your table/list however you want.
share
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Insert Update stored proc on SQL Server
...in the case mentioned above we are removing one
additional read from the table if we
use the UPSERT instead of EXISTS.
Unfortunately for an Insert, both the
UPSERT and IF EXISTS methods use the
same number of reads on the table.
Therefore the check for existence
should only be done whe...
Entity Framework VS LINQ to SQL VS ADO.NET with stored procedures? [closed]
...ntrol
Substantial amount of "repeating yourself" while specifying the same table and field names. The high chance of breaking the application after renaming a DB entity and missing some references to it somewhere.
Slow development
ORM:
(+)
Rapid development
Data access code now under source con...
ng-repeat finish event
I want to call some jQuery function targeting div with table. That table is populated with ng-repeat .
15 Answers
...
Polymorphism in C++
...types.
"to" parametric types from values of constant type
They do not establish polymorphic contexts by themselves, but do help empower/simplify code inside such contexts.
You may feel cheated... it doesn't seem like much. The significance is that in parametric polymorphic contexts (i.e. inside...