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Extension descriptor (YAML)

Query filesystem metadata using SQL with recursive directory traversal

Installing and Loading

INSTALL fsquery FROM community;
LOAD fsquery;

Example

-- Scan a directory and find large files
SELECT path, size, mtime
FROM fsquery_scan('/home')
WHERE is_regular_file AND size > 1000000
ORDER BY size DESC
LIMIT 10;

About fsquery

The fsquery extension adds a fsquery_scan(path) table function that recursively traverses directories and returns file metadata including path, size, timestamps, permissions, and file type flags.

Features

• 14 metadata columns: path, mode, size, uid, gid, atime, mtime, ctime, nlink, ino, dev, is_regular_file, is_directory, is_symlink
• Filter pushdown: Path prefix filters are pushed down to avoid scanning irrelevant directories. When using fsquery_scan() (no explicit path), filters like path >= '/home/user/docs' or path IN (...) cause only those subtrees to be traversed.
• Projection pushdown: Only requested columns are computed, skipping unnecessary stat field extraction.
• Cross-platform support (Linux, macOS, Windows)

Examples

Scan a specific directory:

SELECT path, size, mtime FROM fsquery_scan('/var/log') WHERE is_regular_file;

Filter pushdown — only /etc and /var/log are traversed, not the entire filesystem:

SELECT path, size FROM fsquery_scan()
WHERE path >= '/etc' OR path >= '/var/log';

Find recently modified files:

SELECT path, mtime FROM fsquery_scan('/home')
WHERE is_regular_file AND mtime > TIMESTAMP '2025-01-01'
ORDER BY mtime DESC;

Find all symlinks:

SELECT path FROM fsquery_scan('/usr') WHERE is_symlink;

Added Functions

Overloaded Functions

| function_name | function_type | description | comment | examples | |—————|—————|————-|———|———-|

Added Types

| type_name | type_size | logical_type | type_category | internal | |———–|———-:|————–|—————|———-|

Added Settings

| name | description | input_type | scope | aliases | |——|————-|————|——-|———|