Solution to the Problem of Character Set mismatch in mysql query, mysql Character Set

Solution to the Problem of Character Set mismatch in mysql query, mysql Character Set

Problems Found

Recently, I encountered a problem in my work. When creating a table in MySQL database, I used the latin character set while the query on the webpage was UTF-8. When I enter Chinese characters on the input page, then, when querying in the database, it will reportER_CANT_AGGREGATE_2COLLATIONS: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and （utf8_general_ci,COERCIBLE) for operation '='This error occurs, so we found the method for changing the character set in the database and data table in stackover flow.

SET collation_connection = 'utf8_general_ci' 

Note:Replace the following two statements with your database name and data table name.

ALTER DATABASE your_database_name CHARACTER SET utf8 COLLATE utf8_general_ci  ALTER TABLE your_table_name CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci 

This ensures that the database is also a UTF-8 character set and will not generate an error when querying the database content during Chinese input.

Reference: Illegal mix of collations MySQL Error

Set the database character set to UTF-8 in PHP

mysqli_set_charset($dbc,'utf8'); 

Add the meta that displays UTF-8 in html.

<meta charset="utf-8"> 

Summary

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