tracker-sql - Use SQL to query the Tracker databases.
tracker sql -q <sql> | -f <file>
This command allows probing of the current database. When using commands like
tracker sparql, the SPARQL used is translated into SQL before being run
on the database. This allows direct use of the database using SQL avoiding the
SPARQL engine entirely.
The caller can run a query two ways, either by providing a
file with the query or by providing a string with the sql
query.
The file argument can be either a local path or a URI. It
also does not have to be an absolute path.
- -f, --file=<file>
- Use a file with SPARQL content to query. Don't forget to end all
queries with a semicolon (;) and also to use quotes around table names.
The quotes are important because most tables are named after ontology
classes like "nfo:Document" and queries will fail without the
quotes.
- -q, --query=<sql>
- Use a sql string to query the database with.
- Show first 10 "nfo:Document" entries where the TOC is not
NULL:
-
$ tracker sql -q 'SELECT * FROM "nfo:Document" WHERE "nfo:tableOfContents" NOT NULL LIMIT 10;'
tracker-sparql(1), tracker-store(1), tracker-info(1).
- http://en.wikipedia.org/wiki/SQL