SQLiite3: 数据库文件使用UTF-16编码

默认为UTF-8

如何改为UTF-16呢？

参考这里：http://stackoverflow.com/questions/21348459/set-pragma-encoding-utf-16-for-main-database-in-sqlite

You just call sqlite3 as you wrote. At this time there is just an empty file. Then you set your pragmas. The database with all its settings will be written after creating the first table. And the time of writing with all the environment variables is important. Just then the database is really created. So just set your pragmas before creating the first table. e.g. sqlite3 test.db opens sqlite, nothing is written at that time pragma encoding=utf16; there is still nothing written .quit closes sqlite, an empty file test.db gets created sqlite3 test.db opens sqlite pragma encoding = utf16; pragma nnnn=xxx; sets the pragma(s), the file test.db is still empty create table test (testid integer); now the database gets really created and the database file test.db gets written with content

关键的一句话：

The database with all its settings will be written after creating the first table. And the time of writing with all the environment variables is important. Just then the database is really created. So just set your pragmas before creating the first table.

当创建第一个表的时候，数据库的“设置”才会“生效”。

使用PRAGMAS时要注意，应该在创建第一个表之前进行。

创建一个UTF-16BE(big ending)的数据库

filename: initdb.sql

PRAGMA encoding='UTF-16BE';

create table user (
    id  INTEGER PRIMARY KEY,
    name    TEXT UNIQUE
);