The above query will rename the column id to id1 and change the column data type to BIGNT (20).Ĭlick here for MySQL Manual for ALTER TABLE. Slowly double click on the column you want to modify, do the required modification and click somewhere outside the column area, changes will be saved.ĪLTER TABLE tablename CHANGE oldname newname BIGINT (20) ĪLTER TABLE tbl_admin_modules CHANGE id id1 BIGINT (20) Select the table name from left panel and click on Structure in the right panel. In the Edit Table dialogue box slowly double click on table column name to modify, once the modifications are done click on Apply and Close. Right click on the table name in the right panel of MySQL Query Browser and click on Edit Table. ![]() If we want to rename multiple column names, we might use the below syntax: ALTER TABLE tablename CHANGE oldcolumnname1 newcolumnname1 Data Type, CHANGE oldcolumnname2 newcolumnname2 Data Type. Altering of the table can be done using any MySQL GUI Tool / Editor like MySQL Query Browser (for Windows) or Sequel Pro (for Mac OSX) or using a MySQL ALTER TABLE Query. MySQL also allows us to change the multiple column names within a single statement. We can use Alter to rename the table, but to rename more than one table can’t be done by Alter. Begin with a table t1 created as shown here: 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. MySQL Rename command is used to rename the existing table or an existing column. We can change the table names with the command RENAME. And we want to change this column name as account_no and its data type as int to varchar.If you have already created your MySQL database and table and suddenly realize that one or more table columns need to be modified, you can either drop / delete / remove the respective column and create new or you can alter the table. To RENAME an existing column we use the CHANGE command along with the ALTER command. In this image, we can see that the data type of column name account_num is int. In that case, we first check the structure of the table using the DESCRIBE statement as follows: Third, use the FIRSTor AFTER columnnameoption to determine the new position of the column. ![]() Second, specify the column name and the new name followed by column definition after the CHANGE COLUMNkeywords. In short, you can use the RENAME TABLE command within a MySQL prompt to effectively change the database name of a particular table while keeping the table name. Suppose we have a table named balance that contains the data as follows:ĭue to some reason, we need to change the column name account_num along with its data type. First, specify the name of the table to which the column belongs. Let us understand how the CHANGE statement works in MySQL to rename a column through the various examples.
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