I haven\'t managed to find a way to join two *.mbtiles files together (first one contains zoom level from 0-16 and second one zoom level 17). I was working with different sqlite
In my case I have an error with the @CL. solution:
Error: cannot modify tiles because it is a view
So the schema of my database is different:
> .schema
CREATE TABLE grid_key (
grid_id TEXT,
key_name TEXT
);
CREATE TABLE grid_utfgrid (
grid_id TEXT,
grid_utfgrid BLOB
);
CREATE TABLE images (
tile_data blob,
tile_id text
);
CREATE TABLE keymap (
key_name TEXT,
key_json TEXT
);
CREATE TABLE map (
zoom_level INTEGER,
tile_column INTEGER,
tile_row INTEGER,
tile_id TEXT,
grid_id TEXT
);
CREATE TABLE metadata (
name text,
value text
);
CREATE VIEW tiles AS
SELECT
map.zoom_level AS zoom_level,
map.tile_column AS tile_column,
map.tile_row AS tile_row,
images.tile_data AS tile_data
FROM map
JOIN images ON images.tile_id = map.tile_id;
CREATE VIEW grids AS
SELECT
map.zoom_level AS zoom_level,
map.tile_column AS tile_column,
map.tile_row AS tile_row,
grid_utfgrid.grid_utfgrid AS grid
FROM map
JOIN grid_utfgrid ON grid_utfgrid.grid_id = map.grid_id;
CREATE VIEW grid_data AS
SELECT
map.zoom_level AS zoom_level,
map.tile_column AS tile_column,
map.tile_row AS tile_row,
keymap.key_name AS key_name,
keymap.key_json AS key_json
FROM map
JOIN grid_key ON map.grid_id = grid_key.grid_id
JOIN keymap ON grid_key.key_name = keymap.key_name;
CREATE UNIQUE INDEX grid_key_lookup ON grid_key (grid_id, key_name);
CREATE UNIQUE INDEX grid_utfgrid_lookup ON grid_utfgrid (grid_id);
CREATE UNIQUE INDEX images_id ON images (tile_id);
CREATE UNIQUE INDEX keymap_lookup ON keymap (key_name);
CREATE UNIQUE INDEX map_index ON map (zoom_level, tile_column, tile_row);
CREATE UNIQUE INDEX name ON metadata (name);
So you can adapt the solution this way:
First update the metadata the way you want, for example:
sqlite> UPDATE metadata SET value = '7' WHERE name = 'minzoom';
Then insert the tiles:
sqlite> INSERT OR REPLACE INTO images SELECT * from db2.images;
sqlite> INSERT OR REPLACE INTO map SELECT * from db2.map;