大约有 43,000 项符合查询结果(耗时:0.0575秒) [XML]

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How to use Oracle ORDER BY and ROWNUM correctly?

...n Oracle. If you want a version that works in both servers, you can use: select ril.* from (select ril.*, row_number() over (order by t_stamp desc) as seqnum from raceway_input_labo ril ) ril where seqnum = 1 The outer * will return "1" in the last column. You would need to list the ...
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How do I set up IntelliJ IDEA for Android applications?

...Program Files\Java\jdk{version} Choose a New platform ( if there's not one selected ) , the SDK platform is the android platform at C:\Program Files\Android\android-sdk-windows. Choose the android version. Now you can write your program. Compiling: Near the Run button you need to select the drop...
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Bootstrap datepicker hide after selection

How do I hide the calendar after a date is selected? Is there a specific function that I can use? My code below: 18 Answer...
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List all tables in postgresql information_schema

... You should be able to just run select * from information_schema.tables to get a listing of every table being managed by Postgres for a particular database. You can also add a where table_schema = 'information_schema' to see just the tables in the informat...
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Multiple queries executed in java in single statement

...s wondering if it is possible to execute something like this using JDBC. "SELECT FROM * TABLE;INSERT INTO TABLE;" Yes it is possible. There are two ways, as far as I know. They are By setting database connection property to allow multiple queries, separated by a semi-colon by default. By callin...
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SQL Server insert if not exists best practice

...sert Competitors where doesn't already exist": INSERT Competitors (cName) SELECT DISTINCT Name FROM CompResults cr WHERE NOT EXISTS (SELECT * FROM Competitors c WHERE cr.Name = c.cName) share | ...
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XPath to select multiple tags

...l-name()='e'] is both too-long and incorrect. This XPath expression will select nodes like: OhMy:c NotWanted:d QuiteDifferent:e share | improve this answer | follow ...
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'Must Override a Superclass Method' Errors after importing a project into Eclipse

... preferences and set the Java compiler level to 1.6 and also make sure you select JRE 1.6 to execute your program from Eclipse. share | improve this answer | follow ...
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MySQL: Quick breakdown of the types of joins [duplicate]

...es END EDIT In a nutshell, the comma separated example you gave of SELECT * FROM a, b WHERE b.id = a.beeId AND ... is selecting every record from tables a and b with the commas separating the tables, this can be used also in columns like SELECT a.beeName,b.* FROM a, b WHERE b.id = a.beeId...
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How to create an installer for a .net Windows Service using Visual Studio

...out dragging stuff from the toolbox. Then right click on the gray area and select add installer. This will add an installer project file to your project. Then you will have 2 components on the design view of the ProjectInstaller.cs (serviceProcessInstaller1 and serviceInstaller1). You should then se...