MySQL 其他函数
作者：互联网
| 名称 | 描述 |
|---|---|
| ANY_VALUE() | 通过值拒绝仅抑制\u完整\u组\u |
| BIN_TO_UUID() | 将二进制UUID转换为字符串 |
| DEFAULT() | 返回表列的默认值 |
| GROUPING() | 区分超级聚合汇总行和常规行 |
| INET_ATON() | 返回IP地址的数值 |
| INET_NTOA() | 从数值返回IP地址 |
| INET6_ATON() | 返回IPv6地址的数值 |
| INET6_NTOA() | 从数值返回IPv6地址 |
| IS_IPV4() | 参数是否为IPv4地址 |
| IS_IPV4_COMPAT() | 参数是否为IPv4兼容地址 |
| IS_IPV4_MAPPED() | 参数是否为IPv4映射地址 |
| IS_IPV6() | 参数是否为IPv6地址 |
| IS_UUID() | 参数是否为有效的UUID |
| MASTER_POS_WAIT() | 阻止，直到复制副本读取并应用所有更新到指定位置为止 |
| NAME_CONST() | 使列具有给定的名称 |
| SLEEP() | 睡眠几秒钟 |
| SOURCE_POS_WAIT() | 阻止，直到复制副本读取并应用所有更新到指定位置为止 |
| UUID() | 返回通用唯一标识符（UUID） |
| UUID_SHORT() | 返回一个整数值通用标识符 |
| UUID_TO_BIN() | 将字符串UUID转换为二进制 |
| VALUES() | 定义插入期间要使用的值 |
mysql> SELECT name, address, MAX(age) FROM t GROUP BY name;
ERROR 1055 (42000): Expression #2 of SELECT list is not in GROUP
BY clause and contains nonaggregated column 'mydb.t.address' which
is not functionally dependent on columns in GROUP BY clause; this
is incompatible with sql_mode=only_full_group_by
SELECT name, ANY_VALUE(address), MAX(age) FROM t GROUP BY name;
SELECT age FROM t GROUP BY age-1;
SELECT ANY_VALUE(age) FROM t GROUP BY age-1;
mysql> SELECT name, MAX(age) FROM t;
ERROR 1140 (42000): In aggregated query without GROUP BY, expression
#1 of SELECT list contains nonaggregated column 'mydb.t.name'; this
is incompatible with sql_mode=only_full_group_by
SELECT ANY_VALUE(name), MAX(age) FROM t;
mysql> UPDATE t SET i = DEFAULT(i)+1 WHERE id < 100;
mysql> SELECT * FROM t1;
+------+-------+----------+
| name | size | quantity |
+------+-------+----------+
| ball | small | 10 |
| ball | large | 20 |
| ball | NULL | 5 |
| hoop | small | 15 |
| hoop | large | 5 |
| hoop | NULL | 3 |
+------+-------+----------+
mysql> SELECT name, size, SUM(quantity) AS quantity
FROM t1
GROUP BY name, size;
+------+-------+----------+
| name | size | quantity |
+------+-------+----------+
| ball | small | 10 |
| ball | large | 20 |
| ball | NULL | 5 |
| hoop | small | 15 |
| hoop | large | 5 |
| hoop | NULL | 3 |
+------+-------+----------+
mysql> SELECT name, size, SUM(quantity) AS quantity
FROM t1
GROUP BY name, size WITH ROLLUP;
+------+-------+----------+
| name | size | quantity |
+------+-------+----------+
| ball | NULL | 5 |
| ball | large | 20 |
| ball | small | 10 |
| ball | NULL | 35 |
| hoop | NULL | 3 |
| hoop | large | 5 |
| hoop | small | 15 |
| hoop | NULL | 23 |
| NULL | NULL | 58 |
+------+-------+----------+
mysql> SELECT
name, size, SUM(quantity) AS quantity,
GROUPING(name) AS grp_name,
GROUPING(size) AS grp_size
FROM t1
GROUP BY name, size WITH ROLLUP;
+------+-------+----------+----------+----------+
| name | size | quantity | grp_name | grp_size |
+------+-------+----------+----------+----------+
| ball | NULL | 5 | 0 | 0 |
| ball | large | 20 | 0 | 0 |
| ball | small | 10 | 0 | 0 |
| ball | NULL | 35 | 0 | 1 |
| hoop | NULL | 3 | 0 | 0 |
| hoop | large | 5 | 0 | 0 |
| hoop | small | 15 | 0 | 0 |
| hoop | NULL | 23 | 0 | 1 |
| NULL | NULL | 58 | 1 | 1 |
+------+-------+----------+----------+----------+
mysql> SELECT
IF(GROUPING(name) = 1, 'All items', name) AS name,
IF(GROUPING(size) = 1, 'All sizes', size) AS size,
SUM(quantity) AS quantity
FROM t1
GROUP BY name, size WITH ROLLUP;
+-----------+-----------+----------+
| name | size | quantity |
+-----------+-----------+----------+
| ball | NULL | 5 |
| ball | large | 20 |
| ball | small | 10 |
| ball | All sizes | 35 |
| hoop | NULL | 3 |
| hoop | large | 5 |
| hoop | small | 15 |
| hoop | All sizes | 23 |
| All items | All sizes | 58 |
+-----------+-----------+----------+
mysql> SELECT name, size, SUM(quantity) AS quantity
FROM t1
GROUP BY name, size WITH ROLLUP
HAVING GROUPING(name) = 1 OR GROUPING(size) = 1;
+------+------+----------+
| name | size | quantity |
+------+------+----------+
| ball | NULL | 35 |
| hoop | NULL | 23 |
| NULL | NULL | 58 |
+------+------+----------+
mysql> SELECT
name, size, SUM(quantity) AS quantity,
GROUPING(name) AS grp_name,
GROUPING(size) AS grp_size,
GROUPING(name, size) AS grp_all
FROM t1
GROUP BY name, size WITH ROLLUP;
+------+-------+----------+----------+----------+---------+
| name | size | quantity | grp_name | grp_size | grp_all |
+------+-------+----------+----------+----------+---------+
| ball | NULL | 5 | 0 | 0 | 0 |
| ball | large | 20 | 0 | 0 | 0 |
| ball | small | 10 | 0 | 0 | 0 |
| ball | NULL | 35 | 0 | 1 | 1 |
| hoop | NULL | 3 | 0 | 0 | 0 |
| hoop | large | 5 | 0 | 0 | 0 |
| hoop | small | 15 | 0 | 0 | 0 |
| hoop | NULL | 23 | 0 | 1 | 1 |
| NULL | NULL | 58 | 1 | 1 | 3 |
+------+-------+----------+----------+----------+---------+
mysql> SELECT name, size, SUM(quantity) AS quantity
FROM t1
GROUP BY name, size WITH ROLLUP
HAVING GROUPING(name, size) <> 0;
+------+------+----------+
| name | size | quantity |
+------+------+----------+
| ball | NULL | 35 |
| hoop | NULL | 23 |
| NULL | NULL | 58 |
+------+------+----------+
mysql> SELECT GROUPING((SELECT MAX(name) FROM t1))
FROM t1
GROUP BY (SELECT MAX(name) FROM t1) WITH ROLLUP;
ERROR 3580 (HY000): Argument #1 of GROUPING function is not in GROUP BY
SELECT a AS f1, 'w' AS f2
FROM t
GROUP BY f1, f2 WITH ROLLUP
HAVING GROUPING(f2) = 1;
mysql> SELECT INET_ATON('10.0.5.9');
-> 167773449
mysql> SELECT INET_NTOA(167773449);
-> '10.0.5.9'
mysql> SELECT HEX(INET6_ATON('fdfe::5a55:caff:fefa:9089'));
-> 'FDFE0000000000005A55CAFFFEFA9089'
mysql> SELECT HEX(INET6_ATON('10.0.5.9'));
-> '0A000509'
mysql> SELECT HEX(INET6_ATON(INET_NTOA(167773449)));
-> '0A000509'
CREATE TABLE t AS SELECT INET6_NTOA(expr) AS c1;
CREATE TABLE t (c1 VARCHAR(39) CHARACTER SET utf8 DEFAULT NULL);
mysql> SELECT INET6_NTOA(INET6_ATON('fdfe::5a55:caff:fefa:9089'));
-> 'fdfe::5a55:caff:fefa:9089'
mysql> SELECT INET6_NTOA(INET6_ATON('10.0.5.9'));
-> '10.0.5.9'
mysql> SELECT INET6_NTOA(UNHEX('FDFE0000000000005A55CAFFFEFA9089'));
-> 'fdfe::5a55:caff:fefa:9089'
mysql> SELECT INET6_NTOA(UNHEX('0A000509'));
-> '10.0.5.9'
mysql> SELECT IS_IPV4('10.0.5.9'), IS_IPV4('10.0.5.256');
-> 1, 0
mysql> SELECT IS_IPV4_COMPAT(INET6_ATON('::10.0.5.9'));
-> 1
mysql> SELECT IS_IPV4_COMPAT(INET6_ATON('::ffff:10.0.5.9'));
-> 0
mysql> SELECT HEX(INET6_ATON('198.51.100.1'));
-> 'C6336401'
mysql> SELECT
-> IS_IPV4_COMPAT(INET6_ATON('::198.51.100.1')),
-> IS_IPV4_COMPAT(INET6_ATON('::c0a8:0001')),
-> IS_IPV4_COMPAT(INET6_ATON('::c0a8:1'));
-> 1, 1, 1
mysql> SELECT IS_IPV4_MAPPED(INET6_ATON('::10.0.5.9'));
-> 0
mysql> SELECT IS_IPV4_MAPPED(INET6_ATON('::ffff:10.0.5.9'));
-> 1
mysql> SELECT
-> IS_IPV4_MAPPED(INET6_ATON('::ffff:198.51.100.1')),
-> IS_IPV4_MAPPED(INET6_ATON('::ffff:c0a8:0001')),
-> IS_IPV4_MAPPED(INET6_ATON('::ffff:c0a8:1'));
-> 1, 1, 1
mysql> SELECT IS_IPV6('10.0.5.9'), IS_IPV6('::1');
-> 0, 1
mysql> SELECT IS_UUID('6ccd780c-baba-1026-9564-5b8c656024db');
+-------------------------------------------------+
| IS_UUID('6ccd780c-baba-1026-9564-5b8c656024db') |
+-------------------------------------------------+
| 1 |
+-------------------------------------------------+
mysql> SELECT IS_UUID('6CCD780C-BABA-1026-9564-5B8C656024DB');
+-------------------------------------------------+
| IS_UUID('6CCD780C-BABA-1026-9564-5B8C656024DB') |
+-------------------------------------------------+
| 1 |
+-------------------------------------------------+
mysql> SELECT IS_UUID('6ccd780cbaba102695645b8c656024db');
+---------------------------------------------+
| IS_UUID('6ccd780cbaba102695645b8c656024db') |
+---------------------------------------------+
| 1 |
+---------------------------------------------+
mysql> SELECT IS_UUID('{6ccd780c-baba-1026-9564-5b8c656024db}');
+---------------------------------------------------+
| IS_UUID('{6ccd780c-baba-1026-9564-5b8c656024db}') |
+---------------------------------------------------+
| 1 |
+---------------------------------------------------+
mysql> SELECT IS_UUID('6ccd780c-baba-1026-9564-5b8c6560');
+---------------------------------------------+
| IS_UUID('6ccd780c-baba-1026-9564-5b8c6560') |
+---------------------------------------------+
| 0 |
+---------------------------------------------+
mysql> SELECT IS_UUID(RAND());
+-----------------+
| IS_UUID(RAND()) |
+-----------------+
| 0 |
+-----------------+
mysql> SELECT NAME_CONST('myname', 14);
+--------+
| myname |
+--------+
| 14 |
+--------+
mysql> SELECT 14 AS myname;
+--------+
| myname |
+--------+
| 14 |
+--------+
1 row in set (0.00 sec)
mysql> SELECT SLEEP(1000);
+-------------+
| SLEEP(1000) |
+-------------+
| 0 |
+-------------+
mysql> SELECT SLEEP(1000);
+-------------+
| SLEEP(1000) |
+-------------+
| 1 |
+-------------+
mysql> SELECT /*+ MAX_EXECUTION_TIME(1) */ SLEEP(1000);
+-------------+
| SLEEP(1000) |
+-------------+
| 1 |
+-------------+
mysql> SELECT 1 FROM t1 WHERE SLEEP(1000);
ERROR 1317 (70100): Query execution was interrupted
mysql> SELECT /*+ MAX_EXECUTION_TIME(1000) */ 1 FROM t1 WHERE SLEEP(1000);
ERROR 3024 (HY000): Query execution was interrupted, maximum statement
execution time exceeded
mysql> SELECT UUID();
-> '6ccd780c-baba-1026-9564-5b8c656024db'
mysql> SELECT UUID_SHORT();
-> 92395783831158784
mysql> SET @uuid = '6ccd780c-baba-1026-9564-5b8c656024db';
mysql> SELECT HEX(UUID_TO_BIN(@uuid));
+----------------------------------+
| HEX(UUID_TO_BIN(@uuid)) |
+----------------------------------+
| 6CCD780CBABA102695645B8C656024DB |
+----------------------------------+
mysql> SELECT HEX(UUID_TO_BIN(@uuid, 0));
+----------------------------------+
| HEX(UUID_TO_BIN(@uuid, 0)) |
+----------------------------------+
| 6CCD780CBABA102695645B8C656024DB |
+----------------------------------+
mysql> SELECT HEX(UUID_TO_BIN(@uuid, 1));
+----------------------------------+
| HEX(UUID_TO_BIN(@uuid, 1)) |
+----------------------------------+
| 1026BABA6CCD780C95645B8C656024DB |
+----------------------------------+
mysql> SELECT BIN_TO_UUID(UUID_TO_BIN(@uuid));
+--------------------------------------+
| BIN_TO_UUID(UUID_TO_BIN(@uuid)) |
+--------------------------------------+
| 6ccd780c-baba-1026-9564-5b8c656024db |
+--------------------------------------+
mysql> SELECT BIN_TO_UUID(UUID_TO_BIN(@uuid,0),0);
+--------------------------------------+
| BIN_TO_UUID(UUID_TO_BIN(@uuid,0),0) |
+--------------------------------------+
| 6ccd780c-baba-1026-9564-5b8c656024db |
+--------------------------------------+
mysql> SELECT BIN_TO_UUID(UUID_TO_BIN(@uuid,1),1);
+--------------------------------------+
| BIN_TO_UUID(UUID_TO_BIN(@uuid,1),1) |
+--------------------------------------+
| 6ccd780c-baba-1026-9564-5b8c656024db |
+--------------------------------------+
mysql> SELECT BIN_TO_UUID(UUID_TO_BIN(@uuid,0),1);
+--------------------------------------+
| BIN_TO_UUID(UUID_TO_BIN(@uuid,0),1) |
+--------------------------------------+
| baba1026-780c-6ccd-9564-5b8c656024db |
+--------------------------------------+
mysql> SELECT BIN_TO_UUID(UUID_TO_BIN(@uuid,1),0);
+--------------------------------------+
| BIN_TO_UUID(UUID_TO_BIN(@uuid,1),0) |
+--------------------------------------+
| 1026baba-6ccd-780c-9564-5b8c656024db |
+--------------------------------------+
mysql> INSERT INTO table (a,b,c) VALUES (1,2,3),(4,5,6)
-> ON DUPLICATE KEY UPDATE c=VALUES(a)+VALUES(b);标签：NULL,UUID,MySQL,name,其他,mysql,size,SELECT,函数 来源： https://blog.csdn.net/ctlongs/article/details/121993234