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SQL WHERE.. IN clause multiple columns
I need to implement the following query in SQL Server:
13 Answers
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How to see the values of a table variable at debug time in T-SQL?
Can we see the values (rows and cells) in a table valued variable in SQL Server Management Studio (SSMS) during debug time? If yes, how?
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Can we have multiple “WITH AS” in single sql - Oracle SQL
...d a very simple question: Does oracle allow multiple "WITH AS" in a single sql statement.
4 Answers
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Connection to SQL Server Works Sometimes
...same error message.
To enable TCP/IP for additional IP addresses:
Start Sql Server Configuration Manager
Open the node SQL Server Network Configuration
Left-click Protocols for MYSQLINSTANCE
In the right-hand pane, right-click TCP/IP
Click Properties
Select the IP Addresses tab
For each listed IP...
How do I create a unique constraint that also allows nulls?
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SQL Server 2008 +
You can create a unique index that accept multiple NULLs with a WHERE clause. See the answer below.
Prior to SQL Server 2008
You cannot create a UNIQUE constraint and allow NULLs. You need set a default v...
How do I add a foreign key to an existing SQLite table?
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You can't.
Although the SQL-92 syntax to add a foreign key to your table would be as follows:
ALTER TABLE child ADD CONSTRAINT fk_child_parent
FOREIGN KEY (parent_id)
REFERENCES parent(id);
SQLite doesn't supp...
SQL select only rows with max value on a column [duplicate]
...ed you need the content column as well.
This is a very common question in SQL: find the whole data for the row with some max value in a column per some group identifier. I heard that a lot during my career. Actually, it was one the questions I answered in my current job's technical interview.
It ...
Difference between EXISTS and IN in SQL?
What is the difference between the EXISTS and IN clause in SQL?
21 Answers
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How to create materialized views in SQL Server?
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They're called indexed views in SQL Server - read these white papers for more background:
Creating an Indexed View
Improving Performance with SQL Server 2008 Indexed Views
Basically, all you need to do is:
create a regular view
create a clustered in...
How to do a LIKE query in Arel and Rails?
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is this protected against SQL injections?
– sren
May 28 '12 at 2:17
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