MySQL的binary类型操作
⽰例数据表：
CREATE TABLE test_bin (
bin_id BINARY(16) NOT NULL
) Engine=InnoDB;
插⼊数据(内容是⼀个32位的UUID字符串值)：
INSERT INTO test_bin(bin_id) VALUES(UNHEX('FA34E10293CB42848573A4E39937F479'));
INSERT INTO test_bin(bin_id) VALUES(UNHEX(?));
或
INSERT INTO test_bin(bin_id) VALUES(x'FA34E10293CB42848573A4E39937F479');
查询数据：
SELECT HEX(bin_id) AS bin_id FROM test_bin;
SELECT HEX(bin_id) AS bin_id FROM test_bin WHERE bin_id = UNHEX('FA34E10293CB42848573A4E39937F479');
SELECT HEX(bin_id) AS bin_id FROM test_bin WHERE bin_id = UNHEX(?);
SELECT HEX(bin_id) AS bin_id FROM test_bin WHERE bin_id = x'FA34E10293CB42848573A4E39937F479';
查询结果：
bin_id
--------------------------
FA34E10293CB42848573A4E39937F479
备注：使⽤MySQL内置的 UUID() 创建⼀个函数返回 BINARY（16）类型的UUID值
CREATE FUNCTION uu_id() RETURNS binary(16) RETURN UNHEX(REPLACE(UUID(),'-',''));
或mysql下载32位
CREATE FUNCTION uu_id() RETURNS binary(16) RETURN UNHEX(REVERSE(REPLACE(UUID(),'-','')));
使⽤：
INSERT INTO test_bin(bin_id) VALUES(uu_id());

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