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What are the most common SQL anti-patterns? [closed]
... us who work with relational databases have learned (or are learning) that SQL is different. Eliciting the desired results, and doing so efficiently, involves a tedious process partly characterized by learning unfamiliar paradigms, and finding out that some of our most familiar programming pattern...
Uber5岁了，一次性告诉你它的商业之道 - 资讯 - 清泛网 - 专注C/C++及内核技术
...敦市政府行政和监管事务部发布报告称，Uber的背景审查漏洞百出。一个在监狱蹲过14年且有吸毒史的人，于2012年刑满出狱后成功通过了Uber的背景审查。还有一位仍然处于被通缉状态的申请者也通过了Uber的审查，她在网上有24个...
Import .bak file to a database in SQL server
...
On SQL Server Management Studio
Right click Databases on left pane (Object Explorer)
Click Restore Database...
Choose Device, click ..., and add your .bak file
Click OK, then OK again
Done.
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When do I need to use Begin / End Blocks and the Go keyword in SQL Server?
...n someone tell me when and where I need to use begin and end blocks in SQL Server?
Also, what exactly does the Go keyword do?
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How can I set a custom date time format in Oracle SQL Developer?
By default, Oracle SQL developer displays date values as 15-NOV-11 . I would like to see the time part (hour/minute/second) by default.
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How to get a float result by dividing two integer values using T-SQL?
Using T-SQL and Microsoft SQL Server I would like to specify the number of decimal digits when I do a division between 2 integer numbers like:
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Sql Server string to date conversion
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SQL Server (2005, 2000, 7.0) does not have any flexible, or even non-flexible, way of taking an arbitrarily structured datetime in string format and converting it to the datetime data type.
By "arbitrarily", I mean "a form t...
Referring to a Column Alias in a WHERE Clause
...fter the WHERE clause.)
But, as mentioned in other answers, you can force SQL to treat SELECT to be handled before the WHERE clause. This is usually done with parenthesis to force logical order of operation or with a Common Table Expression (CTE):
Parenthesis/Subselect:
SELECT
*
FROM
(
SELE...
Export and Import all MySQL databases at one time
I want to keep a backup of all my MySQL databases. I have more than 100 MySQL databases. I want to export all of them at the same time and again import all of them into my MySQL server at one time. How can I do that?
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Sql Server 'Saving changes is not permitted' error ► Prevent saving changes that require table re-cr
When I create a table in SQL Server and save it, if I try to edit the table design, like change a column type from int to real, I get this error:
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