大约有 40,000 项符合查询结果(耗时:0.0440秒) [XML]

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mysql check collation of a table

...ry INFORMATION_SCHEMA.TABLES and get the collation for a specific table: SELECT TABLE_SCHEMA , TABLE_NAME , TABLE_COLLATION FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 't_name'; that gives a much more readable output in contrast to SHOW TABLE STATUS that contains a lot of irreleva...
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Understanding keystore, certificates and alias

...d Application Package option of the Eclipse Android tool, you are asked to select a keystore first, and then asked to select a single alias/entry/pair from that keystore. After providing the passwords for both the keystore and the chosen alias, the app is signed and the public key (the certificate) ...
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Difference between clustered and nonclustered index [duplicate]

...a completely different object within the table that contains the column(s) selected for indexing and a pointer back to the table’s rows containing the data. It is like an index in the last pages of a book, where keywords are sorted and contain the page number to the material of the book for faster...
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Cutting the videos based on start and end time using ffmpeg

...this answer if you don't need to trim at an exact milisecond, thus it will select the closest keyframe available. That's why it's so fast, it selects the closest keyframes and takes the snippet out without the need of reencoding. However, if you do need a precise time, taking the nearest keyframe is...
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Why should I avoid std::enable_if in function signatures

...{} } Tag dispatching does not manipulate the overload set, but helps you select exactly the function you want by providing the proper arguments through a compile-time expression (e.g. in a type trait). In my experience, this is much easier to debug and get right. If you are an aspiring library wri...
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'npm' is not recognized as internal or external command, operable program or batch file

...ttings-->Control Panel-->Performance and Maintenance-->System). 2.Select the Advanced tab. 3.Click on the Environment Variables button. 4.Click New button under the "User variables" 5.add "Path" and ";C:\Program Files\nodejs\" – Wen Aug 28 '14 at 4:49 ...
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How do I add more members to my ENUM-type column in MySQL?

... do not appear in your ENUM. What is the output of the following command? SELECT DISTINCT country FROM carmake; ANOTHER EDIT: What is the output of the following command? SHOW VARIABLES LIKE 'sql_mode'; Is it STRICT_TRANS_TABLES or STRICT_ALL_TABLES? That could lead to an error, rather than the ...
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Should I index a bit field in SQL Server?

...ndex would be good because it will order them by value and then be able to select the small working set very quickly. If you agree, add that and I will accept it. – jeremcc Oct 23 '08 at 21:01 ...
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Bash script and /bin/bash^M: bad interpreter: No such file or directory [duplicate]

...it go to settings->preferences new document / default directory tab select the format as unix and close create a new document share | improve this answer | follow ...
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How to quickly edit values in table in SQL Server Management Studio?

... Go to Tools > Options. In the tree on the left, select SQL Server Object Explorer. Set the option "Value for Edit Top Rows command" to 0. It'll now allow you to view and edit the entire table from the context menu. ...