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SQL Server - inner join when updating [duplicate]
... works with UDPATE SET FROM JOIN WHERE? Does it depend on the version of mysql?
– Farside
Apr 28 '16 at 12:45
6
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SQL Server : GROUP BY clause to get comma-separated values [duplicate]
... FOR XML PATH('')), 1, 2, '')
FROM your_table a
GROUP BY ReportId
SQL fiddle demo
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I want to use CASE statement to update some records in sql server 2005
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Change auto increment starting number?
In MySQL, I have a table, and I want to set the auto_increment value to 5 instead of 1 . Is this possible and what query statement does this?
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proper hibernate annotation for byte[]
...eger,
java.math.BigDecimal,
java.util.Date,
java.util.Calendar, java.sql.Date,
java.sql.Time, java.sql.Timestamp,
byte[], Byte[], char[], Character[], enums, and any other
type that implements Serializable.
As described in Section 2.8, the use
of the Basic annotation is optional
fo...
SQL Server Index Naming Conventions [closed]
Is there some standard way to name indexes for SQL Server? It seems that the primary key index is named PK_ and non-clustered indexes typically start with IX_. Are there any naming conventions beyond that for unique indexes?
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Is there a better way to dynamically build an SQL WHERE clause than by using 1=1 at its beginning?
I'm building some SQL query in C#. It will differ depending on some conditions stored as variables in the code.
22 Answer...
软件测试中的性能测试、负载测试、压力测试 - 更多技术 - 清泛网 - 专注C/C...
...关的特性是指，在规定条件下，软件产品执行其功能时，使用合适数量和类别的资源的能力，例如：用户在进行相关操作时，系统的内存和CPU的变化情况。
根据产品的时间特性和资源特性，效率测试可以包括不同的测试类型，...
How to avoid the “divide by zero” error in SQL?
...t instantly get why this works, NULLIF(d,0) will return NULL if d is 0. In SQL, dividing by NULL returns NULL. The Coalesce replaces the resulting NULL by 0.
– GuiSim
Apr 16 '14 at 15:59
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SQL Server IN vs. EXISTS Performance
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That's a good point. The IN statement requires SQL Server to generate a complete result set, and then create a big IF statement I think.
– Randy Minder
Jan 14 '10 at 16:04
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