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Renaming a table. MySQL renames files that correspond to the table tbl_name without making a copy. (You can also use the RENAME TABLE statement to rename tables. See Section 15.1.36, “RENAME TABLE Statement”.) Privileges granted specifically for the renamed table are not migrated to the new name.
The ALTER TABLE statement is used to add, delete, or modify columns in an existing table. The ALTER TABLE statement is also used to add and drop various constraints on an existing table.
11 lut 2015 · You have to use an UPDATE statement with the REPLACE to make the change occur: UPDATE photos SET caption = REPLACE(caption,'"','\'') Here is a working sample: http://sqlize.com/7FjtEyeLAh
In this article, we described how to use the ALTER TABLE statement modify a table, including: adding columns, deleting columns, modifying columns, renaming columns, renaming tables, setting primary keys, etc.
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: ALTER TABLE t2 MODIFY a TINYINT NOT NULL, CHANGE b c CHAR(20);
You will learn how to use the MySQL ALTER TABLE statement to add a column, alter a column, rename a column, drop a column and rename a table.
To change the name of an existing table, you use the RENAME table keyword along with the ALTER TABLE statement. Syntax: ALTER TABLE table_name RENAME TO new_table_name;
