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How to change collation to utf8_bin in a single line?
You need to use ALTER command to change collation to utf8_bin. The syntax is as follows:
ALTER TABLE yourTableName COLLATE utf8_general_ci;
To understand the above syntax, let us create a table. The query to create a table is as follows:
mysql> create table CollateDemo -> ( -> Id int NOT NULL AUTO_INCREMENT, -> Name varchar(20), -> Age int, -> PRIMARY KEY(Id) -> ); Query OK, 0 rows affected (0.98 sec)
Check the DDL of the table. The syntax is as follows:
SHOW CREATE TABLE yourTableName;
Let us now check the DDL of our table:
mysql> show create table CollateDemo;
The following is the output:
+-------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Table | Create Table | +-------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | CollateDemo | CREATE TABLE `collatedemo` (`Id` int(11) NOT NULL AUTO_INCREMENT, `Name` varchar(20) DEFAULT NULL, `Age` int(11) DEFAULT NULL, PRIMARY KEY (`Id`) ) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci | +-------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 1 row in set (0.00 sec)
Now you can change the collation using ALTER command. The query is as follows:
mysql> alter table CollateDemo collate utf8_general_ci; Query OK, 0 rows affected (0.39 sec) Records: 0 Duplicates: 0 Warnings: 0
Now let us check the DDL of the table:
mysql> show create table CollateDemo;
The following is the output:
+--------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Table | Create Table | +-------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | CollateDemo | CREATE TABLE `collatedemo` (`Id` int(11) NOT NULL AUTO_INCREMENT, `Name` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci DEFAULT NULL, `Age` int(11) DEFAULT NULL, PRIMARY KEY (`Id`) ) ENGINE = InnoDB DEFAULT CHARSET = utf8 | +-------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 1 row in set (0.00 sec)
Updated on: 30-Jul-2019
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