Storage

The DuckDB internal storage format is currently in flux, and is expected to change with each release until we reach v1.0.0.

DuckDB files start with a uint64_t which contains a checksum for the main header, followed by four magic bytes (DUCK), followed by the storage version number in a uint64_t. A simple example of reading the storage version using python is below.

import struct

pattern = struct.Struct('<8x4sQ')

with open('test/sql/storage_version/storage_version.db', 'rb') as fh:
    print(pattern.unpack(fh.read(pattern.size)))

For changes in each given release, check out the changelog on GitHub. To see the commits that changed each storage version, see the commit log

Storage version DuckDB versions
44 #6499 onwards
43 v0.7.0, v0.7.1
42 #5544 onwards
41 #5768 onwards
40 #5491 onwards
39 v0.6.0, v0.6.1
38 v0.5.0, v0.5.1
37 #3985 onwards
36 #4022 onwards
35  
34  
33 v0.3.3, v0.3.4, v0.4.0
32 #3084
31 v0.3.2
30  
29  
28  
27 v0.3.1
26  
25 v0.3.0
24  
23  
22  
21 v0.2.9
20  
19  
18 v0.2.8
17 v0.2.7
16  
15 v0.2.6
14  
13 v0.2.5
12  
11 v0.2.4
10  
9  
8  
7  
6 v0.2.3
5  
4 v0.2.2
3  
2  
1 v0.2.1 and prior
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