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Where are my postgres *.conf files?
I have recently reinstalled postgresql 8.3 on my Ubuntu 8.04 after update. Used EnterpriseDB package. I can connect to the database locally, I see system DB postgres but I can't configure it because I can't find config files. Searched through entire hard drive and found only samples like pg_hba.con...
What is the Java equivalent for LINQ? [closed]
...s trying to port LINQ to Java are implementations for a concrete scenario (SQL, Objects...) but does not covr the main goal of LINQ: Integrate the Language Query in the code. Due to this, there is no real alternative nor initative, for now, that can be considered as an alternative.
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Find() vs. Where().FirstOrDefault()
...nd makes use of the primary keys (hence indexes), whereas Where is a plain sql query
– percebus
Feb 9 '16 at 19:56
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When to use SELECT … FOR UPDATE?
...ds on the concurrency control your database system is using.
MyISAM in MySQL (and several other old systems) does lock the whole table for the duration of a query.
In SQL Server, SELECT queries place shared locks on the records / pages / tables they have examined, while DML queries place update lo...
How to access a dictionary element in a Django template?
...de in your templates and vice-versa.
I'd try the above method and see what SQL the ORM generates as I'm not sure off the top of my head if it will pre-cache the properties and just create a subselect for the property or if it will iteratively / on-demand run the query to calculate vote count. But if...
How to select all records from one table that do not exist in another table?
...in basically every database engine ever that attempts to implement ANSI 92 SQL
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Multiline string literal in C#
...whatever line break your source has them as) into the string, however. For SQL, that's not only harmless but probably improves the readability anywhere you see the string - but in other places it may not be required, in which case you'd either need to not use a multi-line verbatim string literal to ...
What is the actual use of Class.forName(“oracle.jdbc.driver.OracleDriver”) while connecting to a dat
...ing the method Class.forName. This methods required an object of type java.sql.Driver. Each JDBC driver contains one or more classes that implements the interface java.sql.Driver.
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Any JDBC 4.0 drivers that are found in your class path are automatically loaded. (However, you must manually load an...
Visual Studio appears to randomly adopt American keyboard layout
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I've definitely had an occasion where SQL Server Management Studio (based on Visual Studio) adopted US keyboard layout for no apparent reason but all other applications were on UK layout so this wasn't a global Windows settings for me.
– Mar...
Creating a copy of a database in PostgreSQL [closed]
...s, and select "New Database". One of the options is the template, and the SQL used to create the database is equivalent. It is so much faster than a dump / restore on the same server.
– jwhitlock
Jun 17 '11 at 15:19
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