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18 gru 2019 · Our previous programmer set the wrong collation in a table (Mysql). He set it up with Latin collation, when it should be UTF8, and now I have issues. Every record with Chinese and Japan character turn to ??? character. Is possible to change collation and get back the detail of character?
14 cze 2011 · I guess you need ALTER TABLE command. Go to MySQL console and run this query: ALTER TABLE links CHANGE `id` `id` char(9) character set latin1 collate latin1_general_cs NOT NULL; This command will change type of already created column.
25 sty 2024 · You can do it using the following SQL command: SHOW FULL COLUMNS FROM your_table_name; This command shows the character set and collation among other details of each column in your table. You can get the default character set and collation of the table itself with: SHOW TABLE STATUS LIKE 'your_table_name';
col_name {ENUM | SET} (val_list) [CHARACTER SET charset_name] [COLLATE collation_name] Examples: CREATE TABLE t1 ( col1 VARCHAR(5) CHARACTER SET latin1 COLLATE latin1_german1_ci ); ALTER TABLE t1 MODIFY col1 VARCHAR(5) CHARACTER SET latin1 COLLATE latin1_swedish_ci;
25 sty 2024 · If you wish to set a default charset and collation for future tables created within a database, you can use the following command: ALTER DATABASE database_name. CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci; Replace ‘database_name’ with the name of your database.
The first step is to convert the column to a binary data type, which removes the existing character set information without performing any character conversion: ALTER TABLE t MODIFY col1 BLOB; The next step is to convert the column to a nonbinary data type with the proper character set: ALTER TABLE t MODIFY col1 CHAR(50) CHARACTER SET sjis;
16 lut 2019 · There are a few options for managing character set conversions. As you have found, there is the alter table option, and you can use the character set clause or the collate clause or both in your statements. Other options include changing the character set and collation for the whole database (which I can see you don't want to do just yet).
