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C# equivalent of the IsNull() function in SQL Server
In SQL Server you can use the IsNull() function to check if a value is null, and if it is, return another value. Now I am wondering if there is anything similar in C#.
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Is the NOLOCK (Sql Server hint) bad practice?
...cases rows are returned which do not match my query. (see blogs.msdn.com/b/sqlcat/archive/2007/02/01/… , found from another SO q'n on this topic)
– Andrew Hill
Jul 29 '15 at 1:58
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SQL “select where not in subquery” returns no results
...e methods in more detail:
NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: SQL Server
NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: PostgreSQL
NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: Oracle
NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: MySQL
There are three ways to do such a query:
LE...
Best way to do nested case statement logic in SQL Server
I'm writing an SQL Query, where a few of the columns returned need to be calculated depending on quite a lot of conditions.
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mysqldump - Export structure only without autoincrement
I have a MySQL database and I am trying to find a way to export its structure only, without the auto increment values. mysqldump --no-data would almost do the job, but it keeps the auto_increment values. Is there any way to do it without using PHPMyAdmin (that I know it can do it)?
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how to mysqldump remote db from local machine
I need to do a mysqldump of a database on a remote server, but the server does not have mysqldump installed. I would like to use the mysqldump on my machine to connect to the remote database and do the dump on my machine.
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Correct use of flush() in JPA/Hibernate
...n-dependent.
In general anyway, JPA providers like Hibernate can cache the SQL instructions they are supposed to send to the database, often until you actually commit the transaction.
For example, you call em.persist(), Hibernate remembers it has to make a database INSERT, but does not actually exec...
What Java ORM do you prefer, and why? [closed]
...t queries have low overhead and I can fit lots of complex logic into large SQL queries, and shift a lot of my processing into the database.
So consider just using the JDBC package.
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Command line: piping find results to rm
I'm trying to work out a command which deletes sql files older than 15 days.
4 Answers
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How would you do a “not in” query with LINQ?
...ms in the first list where Email does not exist in the second list. With SQL I would just use "not in", but I do not know the equivalent in LINQ. How is that done?
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