大约有 3,551 项符合查询结果(耗时:0.0263秒) [XML]

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Postgres: SQL to list table foreign keys

Is there a way using SQL to list all foreign keys for a given table? I know the table name / schema and I can plug that in. ...
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What is the difference between “INNER JOIN” and “OUTER JOIN”?

...ur FROM A LEFT OUTER JOIN B ON A.Colour = B.Colour AND B.Colour = 'Green' SQL Fiddle See these examples run live at SQLFiddle.com. share | improve this answer | follow ...
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SQLAlchemy ORDER BY DESCENDING?

How can I use ORDER BY descending in a SQLAlchemy query like the following? 6 Answers ...
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Count number of records returned by group by

... I know this is a SQL-Server question, but for reference: This does not work on DB/2 (in my case on IBM iSeries). See my comment at Thomas´s answer – Bjinse Dec 13 '12 at 8:05 ...
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SQLite: How do I save the result of a query as a CSV file?

I'm new to SQLite. Is there a way I can export the results of a query into a CSV file? 6 Answers ...
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SQL order string as number

I have numbers saved as VARCHAR to a MySQL database. I can not make them INT due to some other depending circumstances. ...
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What are the options for storing hierarchical data in a relational database? [closed]

...the new method and get a copy of the code at the following URL. http://www.sqlservercentral.com/articles/Hierarchy/94040/ I also developed a "pre-aggregated" hierarchy using similar methods. MLM'ers and people making bills of materials will be particularly interested in this article. http://www.sq...
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Frontend tool to manage H2 database [closed]

... I like SQuirreL SQL Client, and NetBeans is very useful; but more often, I just fire up the built-in org.h2.tools.Server and browse port 8082: $ java -cp /opt/h2/bin/h2.jar org.h2.tools.Server -help Starts the H2 Console (web-) server, TCP...
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What is Turing Complete?

... SQL is most definitely turing-complete. It has scripting capabilities that allow for any computation. – nzifnab May 1 '11 at 0:41 ...
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How to recover MySQL database from .myd, .myi, .frm files

How to restore one of my MySQL databases from .myd , .myi , .frm files? 11 Answers ...