大约有 40,000 项符合查询结果（耗时：0.0286秒） [XML]
How do I find which program is using port 80 in Windows? [duplicate]
... Add-Member @{ Process = $proc[[int]$g[7].Value] } -PassThru;
#} | Format-Table Protocol,LocalAddress,LocalPort,RemoteAddress,RemotePort,State -GroupBy @{Name='Process';Expression={$p=$_.Process;@{$True=$p.ProcessName; $False=$p.MainModule.FileName}[$p.MainModule -eq $Null] + ' PID: ' + $p.Id}} -Au...
Code Golf: Collatz Conjecture
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@Martinho: Me too, but thanks to lazy evaluation, the tables are even much cooler than in other languages.
– Dario
Mar 6 '10 at 19:46
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SQL left join vs multiple tables on FROM line?
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The old syntax, with just listing the tables, and using the WHERE clause to specify the join criteria, is being deprecated in most modern databases.
It's not just for show, the old syntax has the possibility of being ambiguous when you use both INNER and OUTER j...
Simplest way to do a recursive self-join?
...is the simplest way of doing a recursive self-join in SQL Server? I have a table like this:
5 Answers
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Cleaning `Inf` values from an R dataframe
...,lapply(DT, function(x) replace(x, is.infinite(x),NA)))
Option 2 -- data.table
You could use data.table and set. This avoids some internal copying.
DT <- data.table(dat)
invisible(lapply(names(DT),function(.name) set(DT, which(is.infinite(DT[[.name]])), j = .name,value =NA)))
Or using colum...
Change type of varchar field to integer: “cannot be cast automatically to type integer”
I have a small table and a certain field contains the type " character varying ". I'm trying to change it to " Integer " but it gives an error that casting is not possible.
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Setting the default value of a DateTime Property to DateTime.Now inside the System.ComponentModel De
...lue). The issue for me was when I wanted to add a record directly into the table(using SQL) I had to provide the date(or leave it NULL). This is a much better solution. Thanks.
– Storm Muller
Sep 12 '18 at 18:32
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Could not find an implementation of the query pattern
...se connection using LINQ.
First I add a new LINQ to SQL class, and drag my table called "tblPersoon" into it.
9 Answers
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Can we pass parameters to a view in SQL?
...t a stored function, like:
CREATE FUNCTION v_emp (@pintEno INT)
RETURNS TABLE
AS
RETURN
SELECT * FROM emp WHERE emp_id=@pintEno;
This allows you to use it as a normal view, with:
SELECT * FROM v_emp(10)
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Limiting the number of records from mysqldump?
...atabase
Of course, that would give you the first million rows from every table.
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