From 0bf0b05ae86ce12606d850290d5a53b34e7bf0c1 Mon Sep 17 00:00:00 2001
From: evnngsky <evnngsky@gmail.com>
Date: Sat, 26 Dec 2020 16:50:18 +0900
Subject: [PATCH] Update QGCTileCacheWorker.cpp

If TileDB is bigger than 2GB,
--- sq = QString("SELECT COUNT(size), SUM(size) FROM Tiles WHERE tileID IN (SELECT A.tileID FROM SetTiles A join SetTiles B on A.tileID = B.tileID WHERE B.setID  ---
This query holds QGCTileCache Worker.
I solved problems with adding an index like that.
---
 src/QtLocationPlugin/QGCTileCacheWorker.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/QtLocationPlugin/QGCTileCacheWorker.cpp b/src/QtLocationPlugin/QGCTileCacheWorker.cpp
index 9e284ff..dca0bac 100644
--- a/src/QtLocationPlugin/QGCTileCacheWorker.cpp
+++ b/src/QtLocationPlugin/QGCTileCacheWorker.cpp
@@ -1061,6 +1061,8 @@ QGCCacheWorker::_createDB(QSqlDatabase* db, bool createDefault)
     {
         qWarning() << "Map Cache SQL error (create Tiles db):" << query.lastError().text();
     } else {
+        query.exec("CREATE INDEX hash ON Tiles ( hash, size, type ) ");
+             
         if(!query.exec(
             "CREATE TABLE IF NOT EXISTS TileSets ("
             "setID INTEGER PRIMARY KEY NOT NULL, "