On 31.10.2013 18:37, Nico Williams wrote:
On Wed, Oct 16, 2013 at 07:28:04AM -0400, Richard Hipp wrote:
Please see http://www.sqlite.org/src/artifact/2ece66438?ln=13-75
I've been thinking for a while -ever since I happened upon jq(1)- that a
marriage of jq and SQLite3 would be wonderful.
jq is a JSON query language. It's a functional language.
In my mind this would consist of:
- a jq function for sqlite3
- a jq array grouping aggregate function for sqlite3
- a jq virtual table for sqlite3 (for, e.g., disaggregating values)
- a jq binding for sqlite3 (so SQLite3 can be invoked from jq)
The IN array binding could then be handled like this:
sqlite3> SELECT * FROM foo WHERE jq('contains($arg1), :in_list, column1);
The value bound to :in_list would be a JSON array or object (faster for
larger sets) of values.
I am sure, there are many SQLite users waiting with hope :-) for an
extension handling semi-structured data.
BTW, I think some functionality are already online trough
libspatialite's VirtualXPath virtual table [1].
Might be some code reuse could be possible for the JSON case.
Are there enough interest for something like informal SIG about
Tree/Graph data processing in SQLite?
Kind Regards,
Alek
[1]
https://www.gaia-gis.it/fossil/libspatialite/wiki?name=VirtualXPath-intro
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