大约有 43,000 项符合查询结果(耗时:0.0343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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Indenting #defines

...eprocessor did not allow for space between the start of a line and the "#" character; the leading "#" had to always be placed in the first column. Pre-ANSI C compilers are non-existent these days. Use which ever style (space before "#" or space between "#" and the identifier) you prefer. http://ww...
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Get MD5 hash of big files in Python

... @EnemyBagJones 'hr' stands for human readable. It returns a string of 32 char length hexadecimal digits: docs.python.org/2/library/md5.html#md5.md5.hexdigest – Bastien Semene Mar 27 '18 at 9:46 ...
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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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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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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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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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sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and t

...this is giving me the error, The actual string I am trying to insert is 74 chars long, it's: "/gifs/epic-fail-photos-there-i-fixed-it-aww-man-the-tire-pressures-low.gif" ...