Android sqlite UPDATE效率很低

Question

我的问题似乎已经解决了。

当包含大约2500行时，我有一个sqlite数据库。当我执行以下操作时：

ContentValues values = new ContentValues();
values.put(column, 0);
db.update(table, values, null, null);

在完成之前平均花费3秒。

我也试过

db.execSQL("UPDATE table SET column = 0");

更长。

以下是我在PC上执行相同命令时获得的.stat信息：

sqlite> .stat on
sqlite> UPDATE table SET column = 0;
Memory Used:                         10322672 (max 12336272) bytes
Number of Outstanding Allocations:   2229 (max 2529)
Number of Pcache Overflow Bytes:     10237952 (max 10243072) bytes
Number of Scratch Overflow Bytes:    0 (max 0) bytes
Largest Allocation:                  797509 bytes
Largest Pcache Allocation:           4248 bytes
Largest Scratch Allocation:          0 bytes
Lookaside Slots Used:                16 (max 56)
Successful lookaside attempts:       155
Lookaside failures due to size:      190
Lookaside failures due to OOM:       0
Pager Heap Usage:                    8468392 bytes
Page cache hits:                     87018
Page cache misses:                   16596
Page cache writes:                   13201
Schema Heap Usage:                   5088 bytes
Statement Heap/Lookaside Usage:      2656 bytes
Fullscan Steps:                      2584
Sort Operations:                     0
Autoindex Inserts:                   0
Virtual Machine Steps:               67221

任何人都可以帮我找出问题所在以及如何解决问题吗？