将两个mbtiles文件连接在一起

Question

我还没有设法找到将两个* .mbtiles文件连接在一起的方法（第一个包含从0-16缩放级别和第二个缩放级别17）。我正在与不同的SQLite管理员工作，但没有mather如何导出和导入database1到数据库1，我没有成功 - 二进制领域总是如此严重损坏，它无法得到image.png回来。

有谁知道将两个mbtiles文件连接在一起的简单程序吗？

Answer 1

如果两个文件具有相同的元数据，如果tiles表实际上是表，而不是视图，你可以简单地一个数据追加到另一个表：

/* open database1 as main database, then: */ 
ATTACH 'database2' AS db2; 
INSERT INTO tiles SELECT * FROM db2.tiles; 

Answer 2

在我来说，我有与@CL错误。解决方案：

Error: cannot modify tiles because it is a view 

所以，我的数据库的模式是不同的：

> .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); 

这样你就可以适应的解决方案是这样的：

首先更新元数据，你想要的方式，例如：

sqlite> UPDATE metadata SET value = '7' WHERE name = 'minzoom'; 

然后插入砖：

sqlite> INSERT OR REPLACE INTO images SELECT * from db2.images; 
sqlite> INSERT OR REPLACE INTO map SELECT * from db2.map;