mysql> CREATE database testing CHARACTER SET utf16;
Query OK, 1 row affected (0.00 sec)
mysql> USE testing;
Database changed
mysql> CREATE TABLE t (str varchar(64));
Query OK, 0 rows affected (0.43 sec)
mysql> INSET INTO t values ("1234567891234567");
Query OK, 1 row affected (0.00 sec)
=============================Java字符串VS MySQL的串
然後,我有一塊java代碼
Connection connection = DriverManager.getConnection(url, usr, pass);
Statement statement = connection.createStatement();
statement.execute("USE testing");
ResultSet rst = statement.executeQuery("SELECT str, LENGTH(str) FROM t;");
while (rst.next())
System.out.print("java length: " + rst.getString(1).length()
+ "\nmysql length: " + rst.getInt(2));
這將使
java length: 16
mysql length: 32
我不明白爲什麼長度是不同的。我明確地將數據庫的字符集設置爲UTF16(這是Java的默認字符集,對吧?)爲什麼我仍然得到不一致的長度值?