大约有 40,000 项符合查询结果(耗时:0.0158秒) [XML]

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How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited

... If you're using SQL Server 2005, you could use the FOR XML PATH command. SELECT [VehicleID] , [Name] , (STUFF((SELECT CAST(', ' + [City] AS VARCHAR(MAX)) FROM [Location] WHERE (VehicleID = Vehicle.VehicleID) FOR XML PATH ('')), 1, 2, '')) AS Locations FROM [...
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How to use GROUP BY to concatenate strings in SQL Server?

...S (1,'B',8) INSERT INTO #YourTable ([ID],[Name],[Value]) VALUES (2,'C',9) SELECT [ID], STUFF(( SELECT ', ' + [Name] + ':' + CAST([Value] AS VARCHAR(MAX)) FROM #YourTable WHERE (ID = Results.ID) FOR XML PATH(''),TYPE).value('(./text())[1]','VARCHAR(MAX)') ,1,2,'') AS NameVa...
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SELECT INTO using Oracle

I'm trying to do a SELECT INTO using Oracle. My query is: 3 Answers 3 ...
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Is there an onSelect event or equivalent for HTML ?

I have an input form that lets me select from multiple options, and do something when the user changes the selection. Eg, ...
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How do I calculate tables size in Oracle

...BLE_NAME FORMAT A32 COLUMN OBJECT_NAME FORMAT A32 COLUMN OWNER FORMAT A10 SELECT owner, table_name, TRUNC(sum(bytes)/1024/1024) Meg, ROUND( ratio_to_report( sum(bytes) ) over () * 100) Percent FROM (SELECT segment_name table_name, owner, bytes FROM dba_segments WHERE segment_type IN...
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Function to Calculate Median in SQL Server

... in all cases. It also requires SQL 2012 or later. DECLARE @c BIGINT = (SELECT COUNT(*) FROM dbo.EvenRows); SELECT AVG(1.0 * val) FROM ( SELECT val FROM dbo.EvenRows ORDER BY val OFFSET (@c - 1) / 2 ROWS FETCH NEXT 1 + (1 - @c % 2) ROWS ONLY ) AS x; Of course, just because o...
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How do I query if a database schema exists

... Are you looking for sys.schemas? IF NOT EXISTS (SELECT * FROM sys.schemas WHERE name = 'jim') BEGIN EXEC('CREATE SCHEMA jim') END Note that the CREATE SCHEMA must be run in its own batch (per the answer below) ...
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Finding duplicate values in a SQL table

... SELECT name, email, COUNT(*) FROM users GROUP BY name, email HAVING COUNT(*) > 1 Simply group on both of the columns. Note: the older ANSI standard is to have all non-aggregated columns in the GROUP BY ...
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How to make an Android Spinner with initial text “Select One”?

I want to use a Spinner that initially (when the user has not made a selection yet) displays the text "Select One". When the user clicks the spinner, the list of items is displayed and the user selects one of the options. After the user has made a selection, the selected item is displayed in the Spi...
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Get/pick an image from Android's built-in Gallery app programmatically

... https://github.com/hanscappelle/SO-2169649 (note that the multiple file selection still needs work) Single Picture Selection With support for images from file explorers thanks to user mad. public class BrowsePictureActivity extends Activity { // this is the action code we use in our inten...