Post和Location之间有多对多的关系。 连接表称为PostLocations,除了FK之外什么都没有。 (LocationId,PostId) 我正试图拉回每个位置的顶部帖子。 这是我的查询(在我之前的问题的答案中给出): SELECT pl.LocationId, p.postid, p.UniqueUri, p.Content, MAX(s.BaseScore) as topscore from dbo.PostLocations ...
Transact-SQL代码已成为SQL Server的核心。Transact-SQL在关系数据库管理系统中实现数据的检索,操纵和添加功能。 分类 在Microsoft SQL Server 2008系统中,Transact-SQL可以创建,维护,保护数据对象中的数据,所以Transact-SQL语言是一种完整的语言。根据T-SQL语言的执行功能特点,可以将T-SQL语言分为三种基本类型: 数据定...
SQL 复制 -- Changing the order of the columns INSERT dbo.Products (ProductName, ProductID, Price, ProductDescription) VALUES ('Screwdriver', 50, 3.17, 'Flat head') GO 以下语句演示,只要值是按正确顺序列出的,列的名称就是可选的。 此语法很常见,但是建议不要使用它,因为其他人可能会难以理解你...
百度试题 题目在T-SQL语句中,size、maxsize和filegrowth这三个关键字是可要可不要的。 A.正确B.错误相关知识点: 试题来源: 解析 A 反馈 收藏
Are there any constants in T-SQL like there are in some other languages that provide the max and min values ranges of data types such as int? I have a code table where each row has an upper and lower range column, and I need an entry that represents a range where the upper range ...
SQL -- Changing the order of the columnsINSERTdbo.Products (ProductName, ProductID, Price, ProductDescription)VALUES('Screwdriver',50,3.17,'Flat head')GO 以下语句演示,只要值是按正确顺序列出的,列的名称就是可选的。 此语法很常见,但是建议不要使用它,因为其他人可能会难以理解你的代码。NULL为Price列...
My @columns function seems to work (though I can only 'print' 8000 characters to verify), and I have read that it is acceptable to do a MAX or MIN function on non-numeric varchars in SQL 2005, but when I run the query in its complete form I get the error message: ...
The above query gives me almost what i want but isn't filtering for acc = 813. So I know there must be a better (actually applying a filter to remove previous minimum values) way. Quite a hard problem. Here is a recursive solution: ...
MaxSizeDatabaseOption.Accept(TSqlFragmentVisitor) Method Reference Feedback Definition Namespace: Microsoft.SqlServer.TransactSql.ScriptDom Assembly: Microsoft.SqlServer.TransactSql.ScriptDom.dll Package: Microsoft.SqlServer.TransactSql.ScriptDom v161.8901.0 Accepts visitor C# コピー public ov...
I wrote a Table Valued Function in Microsoft SQL Server 2008 to take a comma delimited column in a database to spit out separate rows for each value. Ex: "one,two,three,four" would return a new table with only one column containing the following values: one two three four Does...