issue_comments: 586441484
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| html_url | issue_url | id | node_id | user | created_at | updated_at | author_association | body | reactions | issue | performed_via_github_app |
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| https://github.com/simonw/datasette/pull/672#issuecomment-586441484 | https://api.github.com/repos/simonw/datasette/issues/672 | 586441484 | MDEyOklzc3VlQ29tbWVudDU4NjQ0MTQ4NA== | 9599 | 2020-02-14T19:34:25Z | 2020-02-14T19:34:25Z | OWNER | I've figured out how to tell if a database is safe to open or not: ```sql select sql from sqlite_master where sql like 'CREATE VIRTUAL TABLE%'; ``` This returns the SQL definitions for virtual tables. The bit after `using` tells you what they need. Run this against a SpatiaLite database and you get the following: ```sql CREATE VIRTUAL TABLE SpatialIndex USING VirtualSpatialIndex() CREATE VIRTUAL TABLE ElementaryGeometries USING VirtualElementary() ``` Run it against an Apple Photos `photos.db` file (found with `find ~/Library | grep photos.db`) and you get this (partial list): ```sql CREATE VIRTUAL TABLE RidList_VirtualReader using RidList_VirtualReaderModule CREATE VIRTUAL TABLE Array_VirtualReader using Array_VirtualReaderModule CREATE VIRTUAL TABLE LiGlobals_VirtualBufferReader using VirtualBufferReaderModule CREATE VIRTUAL TABLE RKPlace_RTree using rtree (modelId,minLongitude,maxLongitude,minLatitude,maxLatitude) ``` For a database with FTS4 you get: ```sql CREATE VIRTUAL TABLE "docs_fts" USING FTS4 ( [title], [content], content="docs" ) ``` FTS5: ```sql CREATE VIRTUAL TABLE [FARA_All_Registrants_fts] USING FTS5 ( [Name], [Address_1], [Address_2], content=[FARA_All_Registrants] ) ``` So I can use this to figure out all of the `using` pieces and then compare them to a list of known support ones. | {"total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | 565064079 |