8/22/2023 0 Comments Net sqlite transaction![]() ![]() Transaction speed is limited by the rotational speed of your disk drive. But it will only do a few dozen transactions per second. So you get the effect described here:Īctually, SQLite will easily do 50,000 or more INSERT statements per second on an average desktop computer. The reason is that SQLite wraps every INSERT or UPDATE in a transaction by default. Note though that you must use transactions with SQLite (or disable synchronous operation) for bulk updates, otherwise database writes are very slow. Unit tests of various parts of the application that make use of the database showed speed-ups of between 2 and 3 times faster then JET on average one was 8 times faster. Alternatively you can test for a value between two dates, such as more than yesterday and less than tomorrow. The solution is to use the date function: date(datefield) = date(datevalue) works as you would expect. The SQLite query engine returns false if you test whether “yyyy-mm-dd 00:00:00” is equal to “yyy-mm-dd”. NET provider stores the values as DateTime strings. In my case the application only stores dates, not times but SQLite using the. ![]() You can overcome this by using GetValue and casting the result to a string, or calling GetString() on the result as in dr.GetValue().ToString().Īnother strange one is date comparisons. The odd thing is that the GetFieldType method correctly returns String. If you have a column that normally stores string values, but insert a string that happens to be numeric such as “12345”, then you get an invalid cast exception from the GetString method of the SQLite DataReader. One is puzzling and is described by another user here. The process has been relatively smooth, but I encountered a few oddities. I have been porting a C# application which uses an MDB database (the old Access/JET format) to one that uses SQLite. ![]()
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