大约有 3,558 项符合查询结果（耗时：0.0170秒） [XML]
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
...
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...
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 ...?
...
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...
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 ...
Entity Framework and SQL Server View
...that I don't have the liberty to talk about, we are defining a view on our Sql Server 2005 database like so:
9 Answers
...
What is a “batch”, and why is GO used?
...
GO is not properly a TSQL command.
Instead it's a command to the specific client program which connects to an SQL server (Sybase or Microsoft's - not sure about what Oracle does), signalling to the client program that the set of commands that were...
Generating random strings with T-SQL
If you wanted to generate a pseudorandom alphanumeric string using T-SQL, how would you do it? How would you exclude characters like dollar signs, dashes, and slashes from it?
...
How do I create a foreign key in SQL Server?
I have never "hand-coded" object creation code for SQL Server and foreign key decleration is seemingly different between SQL Server and Postgres. Here is my sql so far:
...
Splitting string into multiple rows in Oracle
I know this has been answered to some degree with PHP and MYSQL, but I was wondering if someone could teach me the simplest approach to splitting a string (comma delimited) into multiple rows in Oracle 10g (preferably) and 11g.
...