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18 sty 2012 · If you want to change the table default character set and all character columns to a new character set, use a statement like this: ALTER TABLE tbl_name CONVERT TO CHARACTER SET charset_name; So query will be: ALTER TABLE etape_prospection CONVERT TO CHARACTER SET utf8;
ALTER TABLE t1 CHANGE c1 c1 BLOB; ALTER TABLE t1 CHANGE c1 c1 VARCHAR(100) CHARACTER SET utf8; Make sure to choose the right collation, or you might get unique key conflicts. e.g. Éleanore and Eleanore might be considered the same in some collations. Aside:
25 sty 2024 · In this tutorial, we will explore how to change the character set and collation of tables in MySQL 8. We will cover the concepts of character set and collation, reasons why you might need to change them, and give code examples ranging from basic to advanced, to guide you through the processes.
Definition and Usage. The CONVERT () function converts a value into the specified datatype or character set. Tip: Also look at the CAST () function. Syntax. CONVERT (value, type) OR: CONVERT (value USING charset) Parameter Values. Technical Details. More Examples. Example. Convert a value to a CHAR datatype: SELECT CONVERT(150, CHAR);
These clauses can also be used for ENUM and SET columns: 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;
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;
The CREATE TABLE and ALTER TABLE statements have optional clauses for specifying the table character set and collation: CREATE TABLE tbl_name (column_list) [[DEFAULT] CHARACTER SET charset_name] [COLLATE collation_name]] ALTER TABLE tbl_name . [[DEFAULT] CHARACTER SET charset_name] [COLLATE collation_name] Example: CREATE TABLE t1 ( ...
