Using Like With Mariadb And Chinese Characters Top 6 Latest Posts

To use the LIKE operator with Chinese characters in MariaDB, you need to make sure that you are using a character set and collation that supports Chinese characters.

First, you should set the character set of your database to a Chinese character set. For example, you can use utf8mb4 which supports the full Unicode character set:

sql
ALTER DATABASE your_database_name CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

Next, when creating your table, you should specify the same character set and collation:

sql
CREATE TABLE your_table_name (
  id INT PRIMARY KEY,
  name VARCHAR(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci
);

Finally, when using the LIKE operator to search for Chinese characters, you need to use the COLLATE keyword to specify the collation to use for the search. For example, to search for names that contain the character “中”:

sql
SELECT * FROM your_table_name WHERE name LIKE '%中%' COLLATE utf8mb4_unicode_ci;

This query will return all rows where the name column contains the character “中”, regardless of whether it is in simplified or traditional Chinese, or whether it is in upper or lower case.

To insert Chinese characters in MySQL, you can follow these steps:

1. Set the character set of the MySQL connection to UTF-8. You can do this by executing the following query after connecting to the MySQL database:

sql
SET NAMES 'utf8mb4';

1. Create a table with a column of data type VARCHAR or TEXT.

For example:

sql
CREATE TABLE example_table (
    id INT NOT NULL AUTO_INCREMENT,
    name VARCHAR(50) NOT NULL,
    PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

1. When inserting data into the table, make sure to use the correct character set encoding for the Chinese characters. For example, if you are inserting data through an SQL query, you can use the following format:

sql
INSERT INTO example_table (name) VALUES ('中文');

In this example, the Chinese characters ‘中文’ are enclosed in single quotes, and the SQL query uses the same character set encoding as the MySQL connection (UTF-8 in this case).

1. If you encounter any issues with character encoding or collation, you can also try setting the collation explicitly when creating the table or column. For example, you could use:

sql
CREATE TABLE example_table (
    id INT NOT NULL AUTO_INCREMENT,
    name VARCHAR(50) NOT NULL COLLATE utf8mb4_unicode_ci,
    PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

The ‘utf8mb4_unicode_ci’ collation is commonly used for Chinese characters and supports sorting and comparison of strings based on the Unicode standard.

There are several encodings that can be used for Chinese characters, each with its own advantages and disadvantages. Here are some of the most common ones:

1. Unicode: Unicode is a universal character encoding standard that supports almost all writing systems, including Chinese. It provides a unique code point for each character, making it an ideal choice for multilingual applications.

2. GB2312: GB2312 is a Chinese character encoding standard that covers most Simplified Chinese characters. It is widely used in mainland China.

3. Big5: Big5 is a Chinese character encoding standard that covers most Traditional Chinese characters. It is widely used in Taiwan and Hong Kong.

4. GBK: GBK is an extension of GB2312 that includes additional Chinese characters. It is widely used in mainland China.

5. UTF-8: UTF-8 is a variable-length character encoding standard that can represent any Unicode character. It is widely used in web applications and is the recommended encoding for HTML pages.

In general, Unicode is the most widely used and recommended encoding for Chinese characters, as it provides the most comprehensive coverage and is compatible with most software and platforms. However, the choice of encoding will depend on the specific requirements of your application and the region in which it will be used.

Chinese and Japanese characters can be encoded using several different encoding schemes, but the most common ones are:

1. Unicode: This is a universal character encoding standard that supports characters from multiple writing systems, including Chinese and Japanese. Unicode assigns a unique code point to each character, allowing it to be represented and processed consistently across different platforms and applications.

2. GB18030: This is a Chinese government standard that extends the widely used GB2312 character set to include a much larger range of Chinese characters. GB18030 is backward compatible with GB2312 and also supports Unicode characters.

3. Shift JIS: This is a character encoding scheme used for Japanese text. It is a variable-length encoding that uses one byte for ASCII characters and two bytes for non-ASCII characters, including Japanese hiragana, katakana, and kanji.

4. EUC-JP: This is another character encoding scheme used for Japanese text. It is also a variable-length encoding that uses one byte for ASCII characters and two bytes for non-ASCII characters, but it has a slightly different structure from Shift JIS.

Overall, Unicode is the most widely used encoding scheme for Chinese and Japanese characters, as it provides a standardized and consistent way to represent text across different platforms and applications.