大约有 3,551 项符合查询结果(耗时:0.0191秒) [XML]

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Comparing Dates in Oracle SQL

...stead of a date literal: timestamp '2015-01-30 19:42:04' (because in ANSI SQL a the date data type doesn't have a time, only the timestamp data type does). – a_horse_with_no_name Feb 3 '15 at 22:27 ...
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When restoring a backup, how do I disconnect all active connections?

My SQL Server 2005 doesn't restore a backup because of active connections. How can I force it? 10 Answers ...
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How do I get list of all tables in a database using TSQL?

...e best way to get the names of all of the tables in a specific database on SQL Server? 17 Answers ...
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Why can't a text column have a default value in MySQL?

...u try to create a TEXT column on a table, and give it a default value in MySQL, you get an error (on Windows at least). I cannot see any reason why a text column should not have a default value. No explanation is given by the MySQL documentation. It seems illogical to me (and somewhat frustrating, a...
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INSERT statement conflicted with the FOREIGN KEY constraint - SQL Server

...s not also in the primary key column of the referenced table. If you have SQL Server Management Studio, open it up and sp_help 'dbo.Sup_Item_Cat'. See which column that FK is on, and which column of which table it references. You're inserting some bad data. Let me know if you need anything explain...
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How to store decimal values in SQL Server?

I'm trying to figure out decimal data type of a column in the SQL Server. I need to be able to store values like 15.5, 26.9, 24.7, 9.8, etc ...
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How to drop a table if it exists?

...an use IF OBJECT_ID('tempdb.dbo.#T', 'U') IS NOT NULL DROP TABLE #T; SQL Server 2016+ has a better way, using DROP TABLE IF EXISTS …. See the answer by @Jovan. share | improve this answer ...
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SQL Server Escape an Underscore

... T-SQL Reference for LIKE: You can use the wildcard pattern matching characters as literal characters. To use a wildcard character as a literal character, enclose the wildcard character in brackets. The following table shows...
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Is there a Max function in SQL Server that takes two values like Math.Max in .NET?

... If you're using SQL Server 2008 (or above), then this is the better solution: SELECT o.OrderId, (SELECT MAX(Price) FROM (VALUES (o.NegotiatedPrice),(o.SuggestedPrice)) AS AllPrices(Price)) FROM Order o All credit and votes ...
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What datatype to use when storing latitude and longitude data in SQL databases? [duplicate]

When storing latitude or longitude data in an ANSI SQL compliant database, what datatype would be most appropriate? Should float be used, or decimal , or ...? ...