大约有 40,000 项符合查询结果（耗时：0.0488秒） [XML]
Postgresql GROUP_CONCAT equivalent?
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This is probably a good starting point (version 8.4+ only):
SELECT id_field, array_agg(value_field1), array_agg(value_field2)
FROM data_table
GROUP BY id_field
array_agg returns an array, but you can CAST that to text and edit as needed (see clarifications, below).
Prior to version...
SQL Call Stored Procedure for each Row without using a cursor
...rate over all customers
WHILE (1 = 1)
BEGIN
-- Get next customerId
SELECT TOP 1 @CustomerID = CustomerID
FROM Sales.Customer
WHERE CustomerID > @CustomerId
ORDER BY CustomerID
-- Exit loop if no more customers
IF @@ROWCOUNT = 0 BREAK;
-- call your sproc
EXEC dbo.YOURSPROC...
How to visualize an XML schema? [closed]
... up an XSD, the app doesn't show anything on the diagram tab, not even the root element. I thought it was broken, but it turns out you just have to explicitly tell it which elements to show.
– dan-gph
Jun 30 '15 at 4:52
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Batch File; List files in directory, only filenames?
... in (list1.txt) do echo %%~nxA >> list.txt
del list1.txt
put your root directory in dir command. It will create a list1.txt with full path names and then a list.txt with only the file names.
share
|
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Making git auto-commit
...\n\n";
}
?>
The only problem with that was it needed to be run by the root user instead of the apache user, so I also had to make a file in /etc/sudoers.d/ containing:
www-data ALL = NOPASSWD: /usr/bin/git
For me, I think that worked pretty solidly. Directory Monitor can be configured to run...
Overloaded method selection based on the parameter's real type
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I expect the method selection to take
in consideration the real (not the
declared) parameter type. Am I missing
something?
Yes. Your expectation is wrong. In Java, dynamic method dispatch happens only for the object the method is called ...
jQuery click not working for dynamically created items [duplicate]
...s:
var YourThing = Backbone.View.extend({
// the static wrapper (the root for event delegation)
el: $( '#wrapper' ),
// event bindings are defined here
events: {
'click a': 'anchorClicked'
},
// your DOM event handlers
anchorClicked: function () {
// ...
Case in Select Statement
I have an SQL statement that has a CASE from SELECT and I just can't get it right. Can you guys show me an example of CASE where the cases are the conditions and the results are from the cases. For example:
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Select objects based on value of variable in object using jq
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Adapted from this post on Processing JSON with jq, you can use the select(bool) like this:
$ jq '.[] | select(.location=="Stockholm")' json
{
"location": "Stockholm",
"name": "Walt"
}
{
"location": "Stockholm",
"name": "Donald"
}
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How do I execute a stored procedure once for each row returned by query?
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declare @field1 int
declare @field2 int
declare cur CURSOR LOCAL for
select field1, field2 from sometable where someotherfield is null
open cur
fetch next from cur into @field1, @field2
while @@FETCH_STATUS = 0 BEGIN
--execute your sproc on each row
exec uspYourSproc @field1, @fiel...