Nice Mysql Alter Table Change Column Size
The reason is altering the column on table containing data will take a lot of data transfer and data page alignment.
Mysql alter table change column size. Now you want to change the size of data type of your field. So in that case we need to update the size of the column again. It can be understood with the help of the following example using the table named Student having the following description.
The alter statement modify and change the Table Stu_Table. In the above command you need to specify table_name whose column you want to modify column_name of column whose length you want to change and new_length new size number. New_column_name specify the name of the new column.
This statement enables. You have to change some columns to TEXT or BLOBs. Heres what you need to do in that case.
Row size too large. Table_name specify the name of the table that you want to add a new column or columns after the ALTER TABLE keywords. RolandoMySQLDBA Other thing that can be done is you create the WorkingTableNew by copying the show create table WorkingTable statements and change the value of auto_increment field by furthering it by a number which is safe for you and also change column to varchar50 and then do both rename in single statement rename table WorkingTable to WorkingTableOld rename table.
The function that concerns us the most is how to utilize ALTER TABLE to rename a column. Its easy to alter the column size using the ALTER TABLE MODIFY statement. Mysql alter table foo modify str2 varchar65353.
Using my solution you just insert data wo any page reorganization. Rename MySQL Column with ALTER TABLE Command ALTER TABLE is an essential command used to change the structure of a MySQL table. SQL Server MS Access.