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Should i use php uuid or mysql uuid function install#
Should i use php uuid or mysql uuid function manual#

We can see that indeed, the UUIDs are completely random and sequentially added to the table.

let’s add some more records: MySQL > INSERT INTO my_table3 (uuid, name, beers) MySQL > SELECT BIN_TO_UUID(uuid), name, beers FROM my_table3 Now let’s insert some records and see if they are inserted sequentially and if the UUID’s value is completely random: MySQL > INSERT INTO my_table3 (uuid, name, beers) ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci `my_row_id` bigint unsigned NOT NULL AUTO_INCREMENT /*!80023 INVISIBLE */, MySQL > SET sql_generate_invisible_primary_key=1

Should i use php uuid or mysql uuid function manual#

GIPK stands for Generated Invisible Primary Key, check the manual for more info. Now we will create a new table, but as recommended, we won’t use the uuid as Primary Key ! We will use a new feature of MySQL 8.0.30: GIPK Mode !

Should i use php uuid or mysql uuid function install#

Key_len: 16 install component "file://component_uuid_v4" | 633ecd6f-1f9f-11ed-ba36-c8cb9e32df8e | lefred | 1 |Īnd now we can verify that when we add new entries they are added to the end of the table: MySQL > INSERT INTO my_table2 (name, beers) VALUES ("Scott",1), ("Lenka",5) | 0x11ED1F9F633ECD6FBA36C8CB9E32DF8E | lefred | 1 |Īs the UUID is now binary, we need to decode it using the function BIN_TO_UUID() and not forget the swap flag: MySQL > SELECT BIN_TO_UUID(uuid,1), name, beers FROM my_table2

Uuid BINARY(16) DEFAULT (UUID_TO_BIN(UUID(), 1)) PRIMARY KEY, | 36f1ce9a-1fa1-11ed-ba36-c8cb9e32df8e | Luis | 1 | EXPLAIN SELECT * FROM my_table WHERE We can check the content of the table: MySQL > SELECT * FROM my_table Now, let’s insert 2 new records: MySQL > INSERT INTO my_table (name, beers) VALUES ("Luis",1), ("Miguel",5) Uuid VARCHAR(36) DEFAULT (UUID()) PRIMARY KEY, Let’s have a look at this example: MySQL > CREATE TABLE my_table (

they are included in each secondary indexes (consuming disk and memory).

generally they are random and cause clustered index to be rebalanced.

There are 2 major problems having a UUID as Primary Key in InnoDB: More and more people are using UUID’s to identify records in their database.Īs you already know, for MySQL’s storage engine (InnoDB) the primary key is very important ! (for performance, memory and disk space).