大约有 42,000 项符合查询结果(耗时:0.0587秒) [XML]

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What is the most efficient way to store a list in the Django models?

... Sadly, no solution for mysql – Joel G Mathew Aug 28 '18 at 10:35 I...
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How to find all the tables in MySQL with specific column names in them?

... @Echo - you can always play with mysqldump with --skip-extended-insert and then grep through the file... dirty but strangely satifying :) – Ken Oct 20 '11 at 17:35 ...
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How does this giant regex work?

...pecially FTP, although should be using sftp or ftps. If you control your MySQL server make sure your web application's MySQL user account is not root, and make sure you remove MySQL FILE privileges from the account. You should also go a step further and do a chmod 500 -R /path/to/web/root and d...
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理解Python的 with 语句 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...码: with open("/tmp/foo.txt") as file: data = file.read() with如何工作? while this might look like magic, the way Python handles with is more clever than magic. The basic idea is that the statement after with has to evaluate an object that responds to an __enter__() as well as an ...
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MySQL skip first 10 results

Is there a way in MySQL to have the first 10 result from a SELECT query skipped? I'd like it to work something like LIMIT. ...
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Doctrine - How to print out the real sql, not just the prepared statement?

...You can check the query executed by your app if you log all the queries in mysql: http://dev.mysql.com/doc/refman/5.1/en/query-log.html there will be more queries not only the one that you are looking for but you can grep for it. but usually ->getSql(); works Edit: to view all the mysql quer...
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MongoDB or CouchDB - fit for production? [closed]

... We are running CouchDB as a replacemant for MySQL for our shops (70.0000 items/shop, a total of 4 million attributes of all items, cross connections between items). Our goals were: Easy replication from a master-db to several clients with different documents. Fast p...
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Using DISTINCT and COUNT together in a MySQL Query

Is something like this possible: 7 Answers 7 ...
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What is the difference between single and double quotes in SQL?

...ct_id SELECT PRODUCT.id 'product_id' Either works in Oracle, SQL Server, MySQL… but I know some have said that the TOAD IDE seems to give some grief when using the single quotes approach. You do have to use single quotes when the column alias includes a space character, e.g., product id, but it...
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MySQL, better to insert NULL or empty string?

... Better to Insert NULL for consistency in your database in MySQL. Foreign keys can be stored as NULL but NOT as empty strings. You will have issues with an empty string in the constraints. You may have to insert a fake record with a unique empty string to satisfy a Foreign Key cons...