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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;
If you want to alter the column details, set default value and add a comment, use this. ALTER TABLE [table_name] MODIFY [column_name] [new data type] DEFAULT [VALUE] COMMENT '[column comment]'
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);
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; This procedure requires that the table not have been modified already with statements such as INSERT or UPDATE after an upgrade
CREATE TABLE t1 (a INTEGER, b CHAR(10)); To rename the table from t1 to t2: ALTER TABLE t1 RENAME t2; To change column a from INTEGER to TINYINT NOT NULL (leaving the name the same), and to change column b from CHAR(10) to CHAR(20) as well as renaming it from b to c:
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.
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 ( ...
