SQLite Adapter Research

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Revision as of 23:04, 22 September 2011 by Cwdesautels (talk | contribs) (Limits)
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Data Types

http://www.sqlite.org/datatype3.html Most SQL database engines (every SQL database engine other than SQLite, as far as we know) uses static, rigid typing. With static typing, the datatype of a value is determined by its container - the particular column in which the value is stored.

SQLite uses a more general dynamic type system. In SQLite, the datatype of a value is associated with the value itself, not with its container. The dynamic type system of SQLite is backwards compatible with the more common static type systems of other database engines in the sense that SQL statement that work on statically typed databases should work the same way in SQLite. However, the dynamic typing in SQLite allows it to do things which are not possible in traditional rigidly typed databases.


Feature Limit
Max Number of Columns Default: 2000, Max: 32767
Number of rows 2 ^ 64 (Max file size should be reached before this)
Page size 512 - 65536
Database size 2 ^ 31 - 2 * Page_Size, Max theoretical size is 14 Terabytes, Operating system file size limit could occur before that point
UUID N-byte blob containing pseudo-random bytes
Auto Increment AUTOINCREMENT keyword guarantees that automatically chosen ROWIDs will be increasing but not that they will be sequential
Joins SQLite supports JOINS and LEFT Joins, FULL JOIN and RIGHT JOIN are supported